tensioning machine

Abstract

The application discloses a tensioning machine, which comprises a top pressing part and a radial driving mechanism. The front end wall of the top pressing part is abutted against a fixed part fixed on a tensioning station during tensioning. The top pressing part is at least partially rigid. The radial driving mechanism is used for driving the top pressing part to move along the radial direction of a tensioning rod. The top pressing part does not completely surround the tensioning rod in the circumferential direction of the tensioning rod, so that at least a non-surrounding area is formed in the circumferential direction of the tensioning rod. The non-surrounding area is at least partially located on the radial movement path of the top pressing part, so that the tensioning rod can pass through the non-surrounding area during the radial movement of the top pressing part. In this way, the invalid stroke of the top pressing part is effectively shortened. In addition, the tensioning machine realizes the rapid alignment and connection of the tensioning rod and a tensioning connecting rod, the rapid automatic tightening of a tensioning nut and the rapid automatic separation of the top pressing part and the fixed part on the tensioning station, and can greatly improve the tensioning efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building material production, in particular to a tensioning machine used in the tensioning step of a prefabricated component. BACKGROUND

[0002] The demand for prefabricated components in the construction industry is increasing, and how to quickly and efficiently produce prefabricated components is a concern for manufacturers.

[0003] In the production process of prefabricated components, tensioning is a very important step. Tensioning is to apply tensile stress to the reinforcement cage of the prefabricated component using a tensioning machine before the prefabricated component bears external load. Tensioning can improve the bending resistance and stiffness of the prefabricated component and increase the durability of the prefabricated component.

[0004] At present, the tensioning machine usually uses a hydraulic cylinder as a power unit and adopts an axial tensioning method. A large space is needed along the tensioning direction to meet the movement of the tensioning machine to achieve the purpose of connecting or disconnecting with the tensioning rod. However, this method requires a large moving space, occupies a large production workshop area, and after moving, the position of the tensioning machine needs to be repositioned, resulting in low tensioning efficiency and low production efficiency of the prefabricated component. Therefore, it is necessary to improve the tensioning machine. SUMMARY

[0005] To solve the above technical problems, the present application provides a tensioning machine, which comprises a top pressing part and a radial driving mechanism. The front end wall of the top pressing part abuts against a fixed part fixed on a tensioning station during tensioning. The top pressing part is at least partially rigid. The radial driving mechanism is used to drive the top pressing part to move along the radial direction of the tensioning rod. The top pressing part does not completely surround the tensioning rod in the circumferential direction of the tensioning rod, thereby forming at least a non-surrounding area in the circumferential direction of the tensioning rod. The non-surrounding area is at least partially located on the radial movement path of the top pressing part, so that the tensioning rod can pass through the non-surrounding area during the radial movement of the top pressing part.

[0006] Optionally, the radial driving mechanism comprises a first driving mechanism for driving the top pressing part to move along the first radial direction of the tensioning rod to a position aligned with the next tensioning rod. The non-surrounding area is at least partially located on the first radial direction, so that the tensioning rod can pass through the non-surrounding area during the movement of the top pressing part along the first radial direction.

[0007] Preferably, the first driving mechanism comprises a wheel and / or a track and / or a track.

[0008] Optionally, the top pressing part is provided with a notch, the non-enclosed area is formed by the notch, and / or the top pressing part has at least two parts spaced from each other and located on different sides of the tension rod, the non-enclosed area is formed by the space between the two parts, or the top pressing part is arranged on one side of the tension rod, and the non-enclosed area is formed by the side without the top pressing part.

[0009] Optionally, the first radial direction is the left-right radial direction of the tension rod, the top pressing part includes an upper part located on the upper side of the tension rod and a lower part located on the lower side of the tension rod, and the upper part and the lower part are arranged in an integrated structure.

[0010] Optionally, the tensioning machine further comprises a power part, the top pressing part is fixed to the front side of the housing of the power part, the rear end of the tension rod extends to the rear of the front end wall of the top pressing part and is connected to the top rod of the power part, and the power part applies a tensioning prestress to the to-be-tensioned member connected to the tension rod through the tension rod.

[0011] Optionally, the radial driving mechanism comprises a second driving mechanism for driving the power part and the top pressing part to move in the up-down radial direction of the tension rod, an angle adjusting mechanism is arranged between the second driving mechanism and the power part, the angle adjusting mechanism and the second driving mechanism jointly act on the power part to axially align the top rod of the power part with the tension rod.

[0012] The angle adjusting mechanism adopts one or a combination of an articulated adjusting mechanism with a rotary joint or a flexible connecting mechanism with a flexible connecting member, and the rotary joint of the articulated adjusting mechanism adopts one or a combination of a spherical hinge structure or a hinge shaft hinging structure.

[0013] Optionally, the top rod and the tension rod are connected through a tensioning connecting mechanism or are connected through one or a combination of threaded connection, pin connection and clamping connection.

[0014] The tensioning connecting mechanism is mounted on the top pressing part, the tensioning connecting mechanism comprises a tensioning connecting member provided with a limiting groove, the end of the tension rod and the end of the top rod are provided with flanges matched with the limiting groove, and the top rod and the tension rod are connected through the flanges entering the limiting groove.

[0015] Optionally, the tensioning connecting mechanism can move forward and backward relative to the top pressing part, the tensioning connecting mechanism further comprises a radial driving assembly for driving the tensioning connecting member to move in the radial direction of the tension rod, and the tensioning connecting member moves the flanges into or out of the limiting groove by moving in the radial direction of the tension rod.

[0016] Optionally, the tensioning machine further comprises a reset mechanism, the reset mechanism being an elastic mechanism with an elastic component and / or an electric drive mechanism with a motor, the elastic mechanism and the electric drive mechanism respectively driving the pressing part to move backward by the elastic energy of the elastic component and the electric energy of the motor, so that the pressing part is separated from the fixed component on the tensioning station.

[0017] Optionally, the tensioning machine further comprises a screwing device for screwing the tensioning nut matched with the tensioning rod, the screwing device being installed on the pressing part, the screwing device comprising at least one driving mechanism, the driving mechanism comprising at least one friction wheel, the friction wheel being in contact with the outer circumferential surface of the tensioning nut, the driving mechanism driving the tensioning nut to rotate on the tensioning rod by the contact friction between the friction wheel and the outer circumferential surface of the tensioning nut.

[0018] The tensioning machine has the following effects:

[0019] The movement of the tensioning machine is based on the radial direction of the tensioning rod, without the need to provide a larger space along the tensioning direction, and the radial movement does not need to be repositioned, thereby improving the tensioning efficiency.

[0020] The non-enclosing area of the tensioning machine is at least partially located on the first radial direction, so that after the tensioning machine tensioning a to-be-tensioned piece, the tensioning machine can be directly moved along the first radial direction of the tensioning rod to align with the tensioning rod connected to the next to-be-tensioned piece, without the need to move along the tensioning direction first, thereby shortening the invalid stroke of the tensioning machine, and further improving the tensioning efficiency.

[0021] The tensioning machine is provided with a reset mechanism, the reset mechanism driving the pressing part of the tensioning machine to move a very short distance along the tensioning direction, so that the pressing part and the fixed component on the tensioning station can be quickly and automatically separated, thereby avoiding the mutual abrasion of the pressing part and the fixed component during the movement of the tensioning machine along the first radial direction.

[0022] The tensioning machine is provided with a screwing device, the screwing device being used to screw the tensioning nut matched with the tensioning rod, compared with manually screwing the tensioning nut, the screwing speed is faster, thereby further improving the tensioning efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A perspective view of a first embodiment of the tensioning machine provided by the present application;

[0024] Figure 2 A perspective view of a second embodiment of the tensioning machine provided by the present application;

[0025] Figure 3 A perspective view of a third embodiment of the tensioning machine provided by the present application; Figure 2 A perspective view of a hidden pressing part state;

[0026] Figure 4 A perspective view of a fourth embodiment of the tensioning machine provided by the present application; Figure 1The left sectional view of the tensioning connector in the middle, with the tensioning rod and the top rod disconnected;

[0027] Figure 5 for Figure 2 Left sectional view of the tensioning connector connecting the tensioning rod and the top rod in the middle;

[0028] Figure 6 for Figure 4 and Figure 5 Front view of the tensioning connector in the middle;

[0029] Figure 7 for Figure 1 A three-dimensional view of the flexible connection mechanism in the image;

[0030] Figure 8 for Figure 2 A three-dimensional diagram of the ball joint mechanism in the image;

[0031] Figure 9 This is a perspective view of the first embodiment of the tightening device;

[0032] Figure 10 for Figure 9 The left view;

[0033] Figure 11 This is a perspective view of the second embodiment of the tightening device;

[0034] Figure 12 for Figure 11 The left view;

[0035] Figure 13 This is a perspective view of the third embodiment of the tightening device;

[0036] Figure 14 This is a rear view of the tensioning machine installed at the tensioning station.

[0037] Figure 15 for Figure 14 Left sectional view;

[0038] Figure 16 - Figure 20 This is a schematic diagram of five embodiments of the top pressure section.

[0039] The annotations in the attached figures are explained as follows:

[0040] 01 Precast component mold, 02 crossbeam, 03 tension rod, 031 first abutment surface, 04 tension nut;

[0041] 10 Top pressure section, 10a Non-enclosed area, 10b Enclosed area;

[0042] 20 connecting brackets;

[0043] 30 Power unit, 301 Push rod, 302 Second stop surface, 303 Push plate;

[0044] 40 tensioning connector, 401 groove, 402 limiting groove, 403 first contact surface, 404 second contact surface;

[0045] 50 radial driving assembly, 51 connecting seat, 52 connecting shaft;

[0046] 60 first driving mechanism, 61 first guide rail, 62 base, 63 first transmission assembly;

[0047] 70 second driving mechanism;

[0048] 80a flexible connecting mechanism, 80b articulated angle adjusting mechanism;

[0049] 90a elastic mechanism, 90b electric driving mechanism, 91 second guide rail, 92 rack, 93 gear;

[0050] 100 tightening device, 101 actuator, 1011 friction wheel, 102 mounting portion, 1021 groove, 1022 bracket, 1023 supporting wheel, 1024 elastic supporting member, 103 radial driving portion, 104 abutting portion, 1041 abutting surface, 1042a sliding hole, 1042b fixing hole, 1043 ball; 105 guide assembly, 1051 sliding member, 1052 guide member; 106 axial driving portion, 1061 elastic member, 1062 blocking member; 107 power source; 108 transmission mechanism, 1081 driving gear, 1082 driven gear;

[0051] 110 protective plate. DETAILED DESCRIPTION

[0052] In order to make the technical personnel in the technical field better understand the technical solutions of the present application, the technical solutions of the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0053] In the description of the present application, the axial direction of the tensioning rod 03 connected to the to-be-tensioned member is the front-rear direction, the position relatively close to the to-be-tensioned member is the front, the position relatively far away from the to-be-tensioned member is the rear, the left-right direction is the horizontal direction perpendicular to the front-rear direction, and the up-down direction is the vertical direction perpendicular to the front-rear direction. The to-be-tensioned member takes the rigid framework of the precast member in the precast member mold 01 as an example.

[0054] As shown in Figure 1 , the tensioning machine comprises a top pressing portion 10 and a power portion 30.

[0055] The top pressing portion 10 is fixed on the front side of the housing of the power portion 30. As shown in Figure 14 and Figure 15As shown, during tensioning, the front end wall of the top pressing part 10 abuts against the cross beam 02 fixed on the tensioning station. In actual applications, some tensioning stations do not have the cross beam 02, in which case, the top pressing part 10 can abut against other fixed components on the tensioning station, and the top pressing part 10 is at least partially rigid. It is worth noting that for a piece to be tensioned, tensioning machines can be arranged on one side or on both sides thereof.

[0056] The power part 30 can specifically adopt components capable of linear driving such as tensioning jacks and hydraulic cylinders. The top rod 301 of the power part 30 extends substantially in the front-rear direction. The front end of the top rod 301 extends to the rear end wall of the top pressing part 10. During tensioning, the rear end of the tensioning rod 03 extends to the rear side of the front end wall of the top pressing part 10 and is connected to the front end of the top rod 301, so as to be capable of moving backward under the driving of the power part 30, so that the power part 30 applies tensile stress to the rigid framework of the prefabricated component through the tensioning rod 03.

[0057] In the embodiment, the tensioning machine further comprises a tensioning connecting mechanism, which comprises a tensioning connecting piece 40. The tensioning connecting piece 40 is provided with a limiting groove 402. The end of the tensioning rod 03 and the end of the top rod 301 are provided with flanges matched with the limiting groove 402. The tensioning rod 03 and the top rod 301 are connected by the flanges entering the limiting groove 402 of the tensioning connecting piece 40. Of course, the connection mode of the top rod 301 and the tensioning rod 03 is not limited to this, and can be one or several of threaded connection, pin connection and clamping connection.

[0058] In the embodiment, the tensioning connecting piece 40 is capable of moving in the radial direction of the tensioning rod 03. In the embodiment, the tensioning connecting mechanism further comprises a radial driving assembly 50, which drives the tensioning connecting piece 40 to move in the radial direction of the tensioning rod 03. Of course, in actual implementation, the radial driving assembly 50 can not be provided, and the tensioning connecting piece 40 can be manually driven to move in the radial direction of the tensioning rod 03.

[0059] During the process that the tensioning connecting piece 40 moves away from the tensioning rod 03 in the radial direction, the flanges of the tensioning rod 03 and the top rod 301 gradually come out of the limiting groove of the tensioning connecting piece 40, so as to release the connection between the top rod 301 and the tensioning rod 03. During the process that the tensioning connecting piece 40 moves close to the tensioning rod 03 in the radial direction, the flanges of the tensioning rod 03 and the top rod 301 enter the limiting groove 402 of the tensioning connecting piece 40, so as to complete the connection between the top rod 301 and the tensioning rod 03.

[0060] In this embodiment, the tensioning connection mechanism is mounted on the top pressure part 10 and can move back and forth relative to the top pressure part 10 to achieve front-to-back position adjustment. By adjusting the front-to-back position of the tensioning connection mechanism, the tensioning connector 40 can be aligned with the docking position of the top rod 301 and the tensioning rod 03. Specifically, it can be adjusted manually, or it can be adjusted using a separate drive mechanism, or the tensioning connector 40 can be linked with the top rod 301, and the front-to-back position of the tensioning connector 40 can be adjusted by moving the top rod 301 back and forth.

[0061] Continue to refer to Figure 1 .

[0062] The tensioning machine also includes a radial drive mechanism for driving the top pressure section 10 to move radially along the tensioning rod 03. Furthermore, the top pressure section 10 does not completely surround the tensioning rod 03 in the circumferential direction, thereby forming a non-enclosed area 10a in the circumferential direction of the tensioning rod 03. The non-enclosed area 10a is at least partially located on the radial movement path of the top pressure section 10, allowing the tensioning rod 03 to pass through the non-enclosed area 10a during the radial movement of the top pressure section 10.

[0063] In this embodiment, the radial drive mechanism includes a first radial drive mechanism 60 and a second radial drive mechanism 70. The first radial drive mechanism 60 is used to drive the pressing part 10 to move along the first radial direction of the tension rod 03 to a position aligned with the next tension rod 03. The second radial drive mechanism 70 is used to drive the pressing part 10 and the power part 30 to move along the vertical radial direction of the tension rod 03. An angle adjustment mechanism is provided between the second drive mechanism 70 and the power part 30. Figure 1 In step 80a), the angle adjustment mechanism and the second drive mechanism 70 work together on the power unit 30 to axially align the push rod 301 of the power unit 30 with the tension rod 03 (i.e., the axis of the push rod 301 and the axis of the tension rod 03 are on the same straight line). Axial alignment of the push rod 301 and the tension rod 03 makes connection easier and ensures the safety of the tensioning process.

[0064] It should be noted that in actual implementation, in addition to setting the first radial drive mechanism 60 and the second radial drive mechanism 70, several more sets of radial drive mechanisms can be set to drive the top pressing part 10 to move along other radial directions of the tension rod 03 (excluding the first radial direction and the upper and lower radial directions).

[0065] In this embodiment, the precast component molds 01 are arranged sequentially in the left-right direction, so the first radial direction is the left-right radial direction of the tension rod 03. Of course, in actual implementation, the first radial direction may also be other radial directions of the tension rod 03.

[0066] In this embodiment, the non-enclosed area 10a formed by the pressing part 10 is at least partially located in the first radial direction, so that the tensioning rod 03 can pass through the non-enclosed area 10a during the movement of the pressing part 10 in the first radial direction. In this way, before moving the pressing part 10 in the first radial direction along the tensioning rod 03, it is not necessary to move the pressing part 10 backward first or only to move the pressing part 10 backward by a small distance, and it is not necessary to move the pressing part 10 backward to a position where the tensioning rod 03 is completely out of the pressing part 10, so that the ineffective stroke of the pressing part 10 is effectively shortened, thereby improving the tensioning efficiency.

[0067] However, if the pressing part 10 is driven to move in the first radial direction along the tensioning rod without moving backward, the friction will be relatively large because the front end wall of the pressing part 10 abuts against the fixed part on the tensioning station, which will cause wear of the pressing part 10 and the fixed part on the tensioning station. Therefore, before driving the pressing part 10 to move in the first radial direction along the tensioning rod, it is better to move the pressing part 10 backward by a certain distance (the distance does not need to be large, as long as the front end wall of the pressing part 10 is separated from the fixed part on the tensioning station), and the elastic mechanism 90a can be used to drive the pressing part 10 to move backward.

[0068] The elastic mechanism 90a uses elastic energy as a power source, and the elastic mechanism 90a can store elastic energy during the process that the power part 30 pulls the tensioning rod 03 backward. After tensioning is completed, the tensioning rod 03 and the top rod 301 are disconnected, and the elastic mechanism 90a drives the pressing part 10 to move backward by releasing the elastic energy. Using the elastic mechanism 90a to drive the pressing part 10 to move backward not only has a simple structure and low cost, but also can automatically drive the pressing part 10 to move backward without manual operation, which has a high degree of automation. Of course, in addition to using the elastic mechanism 90a, an electric driving mechanism 90b (see Figure 2 ) using electric energy as a power source can also be used to drive the pressing part 10 to move backward.

[0069] Please refer to Figure 1 .

[0070] The tensioning machine also includes a tightening device 100 for tightening the tensioning nut 04 matched with the tensioning rod 03. As shown in Figure 15 , the tensioning nut 04 is screwed on the tensioning rod 03, and after the tensioning nut 04 is tightened, it abuts against the fixed part on the tensioning station (the tensioning nut 04 abuts against the cross beam 02 in the figure), so that the tensioning rod 03 cannot move backward, thereby maintaining the tensile stress.

[0071] Since the tensioning nut 04 moves backward when the tensioning rod 03 moves backward during the tensioning process, the tensioning nut 04 needs to be rotated to move forward relative to the tensioning rod 03 after the tensioning is completed or during the tensioning process, so that the tensioning nut 04 can be in a screwed state and abut against the fixed part on the tensioning station.

[0072] In combination Figure 14 and Figure 15 Taking the rigid framework of a prefabricated component as an example, the tensioning steps are performed in the following order:

[0073] First, a plurality of prefabricated component molds 01 are installed on the front side of the beam 02 at the tensioning station (the tensioning machine is located at the rear side of the beam 02), so that the prefabricated component molds 01 are arranged in sequence along the left-right direction. The extension direction of the prefabricated component molds 01 is perpendicular or substantially perpendicular to the extension direction of the beam 02, specifically, the molds extend substantially in the front-rear direction, and the beam extends substantially in the left-right direction. The beam 02 is sequentially provided with a plurality of through holes in the front-rear direction. The rigid framework of the prefabricated component in each prefabricated component mold 01 is connected to the front end of a tensioning rod 03, and each tensioning rod 03 passes through the through hole on the beam 02 to extend to the rear side of the beam 02.

[0074] Then, the positions and angles of the power part 30 and the pressing part 10 are adjusted by using the first driving mechanism 60, the second driving mechanism 70, and the angle adjusting mechanism, so that the jacking rod 301 is axially aligned with a tensioning rod 03, and the front end wall of the pressing part 10 abuts against the rear side of the beam 02.

[0075] Then, the front-rear position of the tensioning connecting piece 40 is adjusted, and after the adjustment, the tensioning connecting piece 40 is driven by the radial driving assembly 50 to move close to the jacking rod 301 along the radial direction of the jacking rod 301, so that the axially aligned tensioning rod 03 and the jacking rod 301 are connected through the tensioning connecting piece 40.

[0076] Then, the jacking rod 301 is moved backward by using the power part 30, and the tensioning rod 03 moves backward accordingly, so that the rigid framework of the prefabricated component is subjected to tensile stress. At the same time when the tensioning rod 03 moves backward or after the tensioning rod 03 moves to a predetermined position, the tensioning nut 04 is screwed by using the screwing device 100, so that the tensioning nut 04 abuts against the beam 02, thereby maintaining the tensile stress, so as to realize the tensioning of the rigid framework of the prefabricated component.

[0077] After the tensioning of the rigid framework of one prefabricated component is completed, the tensioning connecting piece 40 is driven by the radial driving assembly 50 to move away from the jacking rod 301 along the radial direction of the tensioning rod 03, so as to disconnect the tensioning rod 03 and the jacking rod 301.

[0078] Then, the first drive mechanism 60 drives the top pressure section 10 to move left or right, so that the top rod 301 aligns with the next tension rod 03, in preparation for tensioning the rigid frame of the next precast component. The direction of movement of the top pressure section 10 driven by the first drive mechanism 60 is the same as the arrangement direction of the tension rods 03, and the openings of the top pressure section 10 are also on the left and right sides. This arrangement can reduce ineffective strokes and ensure that each movement of the tensioning machine is an optimized movement path.

[0079] During the tensioning process, a monitoring system can be used to monitor the tension, release tension, and release status of the tensioning machine in real time.

[0080] The structure of the above-mentioned top pressure part 10, tensioning connection mechanism (tensioning connector 40 and radial drive assembly 50), first drive mechanism 60, second drive mechanism 70, angle adjustment mechanism (80a, 80b), elastic mechanism 90a, electric drive mechanism 90b, and tightening device 100 is described in detail below with reference to the accompanying drawings.

[0081] Top pressure section 10

[0082] like Figure 1 as well as Figure 16 - Figure 20 As shown, the top pressure portion 10 does not completely surround the tension rod 03 in the circumferential direction, thereby forming a non-enclosed area 10a in the circumferential direction of the tension rod 03. The non-enclosed area 10a is located on the radial movement path of the top pressure portion 10, allowing the tension rod 03 to pass through the non-enclosed area 10a during the radial movement of the top pressure portion 10.

[0083] Specifically, the radial movement path of the pressing part 10 includes one or more combinations of left-right, up-down, and oblique directions. For example, Figure 1 In the middle, the radial movement path of the top pressure part 10 is in the left and right direction, and the non-enclosed area 10a is located on the left and right sides of the tension rod 03. During the left and right movement of the top pressure part 10, the tension rod 03 can pass through the non-enclosed area 10a. Figure 16 In the middle, the radial movement path of the top pressing part 10 is in the left-right direction and the up-down direction. The non-enclosed area 10a is located on the upper and lower sides and the left and right sides of the tension rod 03. During the left-right and up-down movement of the top pressing part 10, the tension rod 03 can pass through the non-enclosed area 10a. Figure 17 In the process, the radial movement path of the top pressure part 10 is in the up and down direction, and the non-enclosed area 10a is located on the upper and lower sides of the tension rod 03. During the up and down movement of the top pressure part 10, the tension rod 03 can pass through the non-enclosed area 10a. Figure 18 and Figure 20 In the process, the radial movement path of the top pressure part 10 is in the up and down direction, and the non-enclosed area 10a is located on the lower side of the tension rod 03. During the up and down movement of the top pressure part 10, the tension rod 03 can pass through the non-enclosed area 10a. Figure 19In the embodiment, the radial moving path direction of the top pressing part 10 is oblique, the non-enclosed area 10a is located at the upper left and lower right of the tension rod 03, and the tension rod 03 can pass through the non-enclosed area 10a during the oblique moving of the top pressing part 10.

[0084] Specifically, a notch can be arranged on the top pressing part 10, and the non-enclosed area 10a is formed by the notch. For example, Figure 1 and Figure 17 In the embodiment, the front notch is arranged on the front end wall of the top pressing part 10, and the side notch is arranged on the left and right side walls of the top pressing part 10 and communicates with the front notch, so that the non-enclosed area 10a is formed at the left and right sides of the tension rod 03. Figure 18 In the embodiment, the front notch is arranged on the front end wall of the top pressing part 10, and the side notch is arranged on the lower side wall of the top pressing part 10 and communicates with the front notch, so that the non-enclosed area 10a is formed at the lower side of the tension rod 03.

[0085] The top pressing part 10 can also have at least two parts spaced from each other and located at different sides of the tension rod, and the non-enclosed area 10a is formed by the space between the parts. For example, Figure 16 and Figure 17 In the embodiment, the top pressing part 10 has left and right parts, and the non-enclosed area 10a is formed at the upper and lower sides of the tension rod 03 by the space between the left and right parts. Figure 19 In the embodiment, the top pressing part 10 has a left upper part and a right lower part, and the non-enclosed area 10a is formed at the upper left and lower right of the tension rod 03 by the space between the left upper part and the right lower part.

[0086] The top pressing part 10 can also be arranged on one side of the tension rod, and the non-enclosed area 10a is formed by the side without the top pressing part 10. For example, Figure 20 In the embodiment, the top pressing part 10 is arranged on the upper side of the tension rod 03, and the non-enclosed area 10a is formed by the lower side without the top pressing part 10.

[0087] As shown in Figure 1 In order to enhance the stability and reliability of the top pressing of the top pressing part 10 during tensioning, the top pressing part 10 preferably includes an upper part located on the upper side of the tension rod 03 and a lower part located on the lower side of the tension rod 03, and in order to enhance the overall structural strength of the top pressing part 10, the upper part and the lower part are preferably arranged in an integrated structure. Figure 1 In the embodiment, the upper part and the lower part of the top pressing part 10 form the enclosed area 10b at the upper side and the lower side of the tension rod, respectively.

[0088] Tensioning connection mechanism

[0089] As shown in Figures 1 - 3 The tensioning connecting mechanism includes a tensioning connecting piece 40 and a radial driving assembly 50, and is installed on the top pressing part 10.

[0090] The side wall of the top pressing part 10 is provided with a connecting shaft 52 extending in the front-rear direction and a connecting seat 51 sleeved on the connecting shaft 52. The radial driving assembly 50 is fixed on the connecting seat 51, and the tension connecting piece 40 is connected with the radial driving assembly 50. The connecting seat 51 can slide on the connecting shaft 502 in the front-rear direction, thereby driving the radial driving assembly 50 and the tension connecting piece 40 to move in the front-rear direction, so that the front-rear position of the tension connecting piece 40 is adjustable.

[0091] In the illustrated embodiment, the radial driving assembly 50 is a worm screw assembly, specifically including a worm gear and a worm screw that are matched with each other, and a radial screw rod. The radial screw rod extends in one radial direction of the tension rod 03 (extending in the up-down direction in the figure) and passes through an elongated hole in the side wall of the top pressing part 10 to be connected with the tension connecting piece 40. The inner periphery of the worm gear is provided with an internal thread, which is matched and connected with the radial screw rod. The worm screw can be driven by a motor or manually. When the worm screw moves, it drives the worm gear to rotate, and then drives the radial screw rod to move in the radial direction of the tension rod 03 (in the up-down direction in the figure). Of course, in actual implementation, the structure of the radial driving assembly 50 is not limited to the worm screw structure, for example, a gear and rack structure or a telescopic rod structure, etc.

[0092] As shown in the figure, the outer periphery of the tension rod 03 is provided with a first resisting surface 031 facing forward, and the outer periphery of the top rod 301 is provided with a second resisting surface 302 facing backward. In the figure, the outer periphery of the tension rod 03 and the top rod 301 are both provided with flanges, and the end faces of the flanges form the first resisting surface 031 and the second resisting surface 302. Figures 4 - 6

[0093] The tension connecting piece 40 is provided with a first contact surface 403 facing backward and a second contact surface 404 facing forward. The first contact surface 403 is used to abut against the first resisting surface 031, and the second contact surface 404 is used to abut against the second resisting surface 302. In the figure, the side surface of the tension connecting piece 40 is provided with a groove 401, which penetrates from the front end surface of the tension connecting piece 40 to the rear end surface of the tension connecting piece 40 in the front-rear direction. The middle part of the groove surface of the groove 401 is concave to form a limiting groove 402, and the front-rear end walls of the limiting groove 402 form the first contact surface 403 and the second contact surface 404.

[0094] The tension connecting piece 40 can move in the radial direction of the tension rod 03, and the tension connecting piece 40 moves in the radial direction of the tension rod 03 to make the contact surfaces and the resisting surfaces face each other or be radially staggered with each other. In the figure, the tension connecting piece 40 moves in the radial direction of the tension rod 03 to make the top rod 301 and the tension rod 03 enter and exit the groove 401, and at the same time, the flanges enter and exit the limiting groove 402. When the flanges enter the limiting groove 402, the contact surfaces and the resisting surfaces face each other. When the flanges exit the limiting groove 402, the contact surfaces and the resisting surfaces are radially staggered with each other.

[0095] ​When the contact surface and the resistance surface are radially offset from each other, the jacking rod 301 and the tension rod 03 are disconnected. When the contact surface and the resistance surface face each other, after the jacking rod 301 moves backward by a certain distance, the second resistance surface 302 abuts against the second contact surface 404, thereby pushing the second contact surface 404 backward, and the tension connecting piece 40 moves backward. After the tension connecting piece 40 moves backward by a certain distance, the first contact surface 403 abuts against the first resistance surface 031, thereby pushing the first resistance surface 031 backward, and the tension rod 03 moves backward, thereby realizing the connection of the jacking rod 301 and the tension rod 03.

[0096] In the prior art, the jacking rod 301 and the tension rod 03 are connected through threads, and the thread connection has low reliability and poor versatility. In addition, the connection and disconnection need to be realized through rotation, so that the time required for connection and disconnection is relatively long. In comparison, the tension connecting piece 40 provided in the present scheme has high reliability and good versatility, and the connection and disconnection can be realized by moving the tension connecting piece 40. In comparison with rotation, the moving process takes less time, thereby improving the tension efficiency.

[0097] It should be noted that in the illustrated scheme, the contact surface is formed by the end wall of the groove body, and the resistance surface is formed by the end face of the flange. In this way, the machining is facilitated, and the strength of the tension rod 03 and the jacking rod 301 is not weakened. However, in actual implementation, the resistance surface can also be formed by the end wall of the groove body, and the contact surface can be formed by the end face of the flange.

[0098] In order to enable the flanges on the jacking rod 301 and the tension rod 03 to enter the limiting groove 402 of the tension connecting piece 40 with the radial movement of the tension connecting piece 40, it is necessary to first adjust the front and rear positions of the tension connecting piece 40 so that the limiting groove 402 is aligned with the flange.

[0099] Figure 4 In the illustrated scheme, two pushing plates 303 are arranged on the outer periphery of the jacking rod 301. The front end face of one pushing plate 303 abuts against the tension connecting piece 40, and the rear end face of the other pushing plate 303 abuts against the tension connecting piece 40. In this way, while adjusting the front and rear positions of the jacking rod 301, the jacking rod 301 can push the tension connecting piece 40 to move backward or forward, so that the front and rear positions of the tension connecting piece 40 are also adjusted, thereby realizing the simultaneous and synchronous adjustment of the front and rear positions of the jacking rod 301 and the tension connecting piece 40. In this way, the time required for adjustment can be effectively shortened, thereby further improving the tension efficiency.

[0100] It should be noted that the radial dimension of the abutting plate 303 should be greater than the radial dimension of the flange, so that when the tensioning connector 40 moves radially to a position where the jacking rod 301 and the tensioning rod 03 are disconnected, the abutting plate 303 can still abut the tensioning connector 40, that is, after the jacking rod 301 and the tensioning rod 03 are disconnected, the jacking rod 301 and the tensioning connector 40 are still connected.

[0101] In addition, it should be noted that the abutting plate 303 is used to realize the abutting of the tensioning connector 40 and the jacking rod 301 in the front-rear direction, which is relatively easy to realize and does not affect the radial movement of the tensioning connector 40. However, in actual implementation, other structures can also be used to realize the abutting of the tensioning connector 40 and the jacking rod 301 in the front-rear direction, as long as they do not affect the radial movement of the tensioning connector 40.

[0102] First drive mechanism 60

[0103] Reference Figures 1 - 3 .

[0104] The first driving mechanism 60 is used to drive the jacking part 10 to move in the left-right direction.

[0105] The tensioning machine is provided with a first guide rail 61 and a base 62. The first guide rail 61 is parallel to the cross beam 02 and perpendicular to the extension direction of the prefabricated component mold 01. Specifically, the first guide rail 61 and the cross beam 02 both extend in the left-right direction, and the prefabricated component mold 01 extends in the front-rear direction. The bottom of the base 62 is slidingly connected with the first guide rail 61 through a pulley, so that it can slide left and right on the first guide rail 61. Of course, in actual implementation, the first driving mechanism 60 includes wheels and / or rails and / or tracks, and the components of the first driving mechanism 60 can be selected according to the site conditions.

[0106] The first driving mechanism 60 includes a motor, which is drivingly connected with the pulley at the bottom of the base 62 through a first transmission assembly 63. The first driving mechanism 60, the jacking part 10, and the first transmission assembly 63 are all mounted on the base 62. The motor drives the pulley to roll on the first guide rail 601 through the first transmission assembly 63, thereby driving the base 62 and all the components mounted thereon to move left and right together.

[0107] In the illustrated scheme, the first transmission assembly 63 adopts a chain transmission structure, which specifically includes a chain, a driving sprocket, and a driven sprocket. The chain is tensioned between the driving sprocket and the driven sprocket. The driving sprocket is driven by the motor, and the driven sprocket is fixed on a transmission shaft with the pulley. When the driving sprocket rotates, it drives the transmission shaft to rotate through the driven sprocket, thereby driving the pulley to roll on the first guide rail 61.

[0108] It should be noted that the first transmission assembly 63 is not limited to the chain transmission structure, and can also be a belt transmission structure or a gear transmission structure, etc.

[0109] Second drive mechanism 70

[0110] Reference Figures 1 - 2 .

[0111] The tensioning machine is provided with a frame 92, the power part 30 is at least partially located inside the frame 92, the pressing part is fixed at the front side of the power part 30, the second driving mechanism 70 is installed on the frame 92, the movable part of the second driving mechanism 70 extends into the frame 92 and is connected with the power part 30 and / or the pressing part 10, and the second driving mechanism 70 is used to drive the pressing part 10 and the power part 30 to move up and down.

[0112] In the figure, the left side and the right side of the frame 92 are provided with protective plates 110, which play a role in preventing the power part 30 from being worn and impacted.

[0113] In the illustrated embodiment, the second driving mechanism 70 is a worm screw structure, which specifically includes a worm gear and a worm and a radial screw rod that are adapted to each other. The radial screw rod extends in the up-down direction, and the lower end of the radial screw rod extends into the frame 902 and is connected with the connecting frame 20 arranged above the pressing part 10 and the power part 30. The inner periphery of the worm gear is provided with an internal thread, which is connected with the radial screw rod through the internal thread. The worm can be driven by a motor or manually. When the worm moves, it drives the worm gear to rotate, and then drives the radial screw rod to move up and down, thereby driving the pressing part 10 and the power part 30 to move up and down.

[0114] It should be noted that the structure of the second driving mechanism 70 is not limited to the worm screw structure, for example, a gear and rack structure or a telescopic rod structure, etc.

[0115] Angle adjustment mechanism

[0116] Reference Figure 1 、 Figure 2 and Figure 7 、 Figure 8 .

[0117] As shown in Figure 1 and Figure 2 , the angle adjusting mechanism is connected between the power part 30 and the second driving mechanism 70, and the angle adjusting mechanism enables the power part 30 to swing at multiple angles relative to the second driving mechanism 70. The angle adjusting mechanism and the second driving mechanism 70 jointly act on the power part 30, so that the time for the top rod 301 of the power part 30 to align with the tensioning rod 03 is very short, and therefore the tensioning efficiency can be further improved.

[0118] The angle adjusting mechanism can adopt one or a combination of a joint type adjusting mechanism with a rotary joint or a flexible connection mechanism with a flexible connecting piece.

[0119] Figure 7In the shown scheme, a flexible connecting mechanism 80a is adopted, which includes a flexible connecting member, which can be a chain, a steel wire rope or other component with certain flexibility and sufficient load bearing capacity. In the figure, a chain is adopted, and three groups of chains are provided, the upper ends of which are connected to the lower ends of the radial lead screws of the second driving mechanism 70 through hooks and fixed plates, and the lower ends of which are connected to the connecting frame 20 arranged above the top pressing part 10 and the power part 30 through hooks.

[0120] Figure 8 In the shown scheme, a joint adjusting mechanism 80b is adopted, and the rotary joint of the joint adjusting mechanism is a spherical hinge structure. In actual implementation, the rotary joint can also adopt a hinge shaft hinging structure. The spherical hinge structure includes a ball head and a support, and the support is provided with a mounting hole matched with the ball head, and the ball head is installed in the mounting hole and can rotate in the mounting hole. The ball head is connected to the lower end of the radial lead screw of the second driving mechanism 70, and the support is connected to the connecting frame 20 arranged above the top pressing part 10 and the power part 30.

[0121] Elastic mechanism 90a and electric drive mechanism 90b

[0122] Reference Figure 1 and Figure 2 .

[0123] The tensioning machine is provided with a second guide rail 91 arranged on the base 62, which extends in the front-rear direction. The bottom of the machine frame 92 is in sliding fit with the second guide rail 91 through a roller, so as to be able to slide on the second guide rail 91 in the front-rear direction. When the machine frame 92 moves in the front-rear direction, the top pressing part 10 moves synchronously.

[0124] The elastic mechanism 90a and the electric driving mechanism 90b are used to drive the machine frame 92 to move backward, so as to drive the top pressing part 10 to move backward, so that the front end wall of the top pressing part 10 is separated from the abutting of the fixed component on the tensioning station. Figure 1 The elastic mechanism 90a is adopted in the Figure 2 The electric driving mechanism 90b is adopted in the

[0125] As Figure 1 shown, the elastic mechanism 90a includes an elastic component, a first stop member installed on the base 62 and a second stop member installed on the machine frame 92, and the elastic component is installed between the first stop member and the second stop member.

[0126] When the top rod 301 of the power unit 30 moves backward, the shell of the power unit 30 will move forward under the backward force of the top rod 301, and the frame 92 will move forward. During this process, the elastic component of the elastic mechanism 90a is compressed or stretched. Specifically, when the first stop member is located in front of the second stop member, the forward movement of the frame 92 will compress the elastic component, and when the first stop member is located behind the second stop member, the forward movement of the frame 92 will stretch the elastic component. The elastic component stores elastic energy by being compressed or stretched. After tensioning is completed, the stored elastic energy is released, and under the action of the elastic energy, the frame 92 is pushed backward, and the pressing part 10 is moved backward, thereby separating from the abutting of the fixed component on the tensioning station.

[0127] The elastic mechanism 90a is used to drive the pressing part 10 to move backward, which has a simpler structure, lower setting cost and high automation.

[0128] As shown in Figure 2 , the electric drive mechanism 90b includes a motor, which drives the rollers at the bottom of the frame 92 to roll through a second transmission assembly. The motor and the second transmission assembly are both installed on the frame 92.

[0129] In the illustrated scheme, the second transmission assembly includes a gear 94 and a rack 93. The gear 94 is driven by the motor, and the rack 93 extends in the front-back direction and is fixed on the frame 92. When the gear 94 rotates, it drives the rack 93 to move in the front-back direction.

[0130] After tensioning of one prefabricated component is completed, the pressing part 10 is moved backward by the electric drive mechanism 90b to a proper distance, so that the pressing part 10 is separated from the abutting of the fixed component on the tensioning station, and then the pressing part 10 is moved left and right to prepare for tensioning of the next prefabricated component.

[0131] Screwing device 100

[0132] The tightening device 100 is used to tighten the tensioning nut 04 matched with the tensioning rod 03, so that the tensioning nut 04 abuts against the fixed component on the tensioning station, thereby playing a role in maintaining the tensile stress.

[0133] First embodiment of the screwing device 100

[0134] As shown in Figure 9 , the tightening device includes an execution mechanism 101, and in actual implementation, several execution mechanisms 101 can also be provided according to actual needs. It also includes a power source 107. In the figure, the power source 107 is a motor, and of course in actual implementation, the power source 107 is not limited to a motor.

[0135] The actuator 101 comprises a friction wheel 1011, and several friction wheels 1011 can be arranged according to actual needs.

[0136] The screwing device further comprises a power source 107 connected with the actuator 101, and a motor is adopted in the embodiment, and the power source 107 is in transmission connection with the friction wheel 1011 to drive the friction wheel 1011 to rotate, so that the friction wheel 1011 is in friction with the outer circumferential surface of the tensioning nut 04 to drive the tensioning nut 04 to rotate on the tensioning rod 01.

[0137] In the embodiment, the motor is connected with the friction wheel 1011 through a transmission mechanism 108, the transmission mechanism 108 comprises a driving gear 1081 and a driven gear 1082, the driving gear 1081 is driven by the motor, the driven gear 1082 is in meshing with the driving gear 1081, and the driven gear 1082 is fixedly sleeved on the wheel shaft of the friction wheel 1011 to drive the friction wheel 1011 to rotate through the rotation of the driven gear 1082. Of course, the transmission mechanism 108 can not be arranged in actual implementation, and the motor can directly drive the friction wheel 1011, or the transmission mechanism 108 can adopt other structures, such as belt transmission structure or chain transmission structure.

[0138] The screwing device further comprises a mounting portion 102, and the actuator 101 is mounted on the mounting portion 102, so that the integration of the whole device is good, and the structure is compact.

[0139] In the embodiment, the mounting portion 102 comprises two supporting wheels 1023, and the supporting wheels 1023 can not be arranged, only one supporting wheel 1023 can be arranged, or more than two supporting wheels 1023 can be arranged in actual implementation. The supporting wheels 1023 are in contact with the outer circumferential surface of the tensioning nut 04, and the friction wheel 1011 and the supporting wheels 1023 are distributed along the circumferential direction of the tensioning nut 04. The supporting wheels 1023 are arranged to be in contact with the outer circumferential surface of the tensioning nut 04, so that the radial position of the tensioning nut 04 can be further limited, and the radial position of the tensioning nut 04 can be basically kept stable during rotation, so that the tensioning nut 04 can be reliably rotated.

[0140] In the embodiment, the supporting wheels 1023 are passively rotated along with the rotation of the tensioning nut, that is, the supporting wheels 1023 are passive wheels rotated under the friction of the tensioning nut, and are not driven active wheels by the power source 107; of course, the supporting wheels 1023 can be driven active wheels by the power source 107.

[0141] In the embodiment, the actuator 101 and the components connected thereto are located below the tensioning nut 04, the friction wheel 1011 and the two supporting wheels 1023 are in contact with the lower half of the outer circumferential surface of the tensioning nut 04, so that the tensioning nut 04 is supported on the friction wheel 1011 and the supporting wheels 1023. In this way, the tensioning nut can be in closer contact with the friction wheel 1011 and the supporting wheels 1023 by relying on the self-weight of the tensioning nut. Preferably, the friction wheel 1011 is arranged directly below the tensioning nut 04, and the two supporting wheels 1023 are arranged on both sides of the friction wheel 1011, which facilitates the close contact between the friction wheel 1011 and the tensioning nut 04.

[0142] The tightening device further comprises a radial driving part 103 connected with the mounting part 102, the radial driving part 103 being used to drive the mounting part 102 and the actuator 101 and the components connected thereto mounted thereon to move along the radial direction of the tensioning nut 04 contacted by the friction wheel 1011, so as to enable the supporting wheels 1023 and the friction wheel 1011 to contact or separate from the outer circumferential surface of the tensioning nut 04.

[0143] In the embodiment, the friction wheel 1011 is arranged below the tensioning nut 04 in the vertical radial direction, and the radial driving part 103 is arranged below the tensioning nut 04, the radial driving part 103 is connected with the mounting part 102, and the radial driving part 103 drives the mounting part 102 to move along the vertical radial direction (i.e. the up-down direction) of the tensioning nut 04, when the mounting part 102 moves upward, the friction wheel 1011 moves upward, so as to be able to contact the outer circumferential surface of the tensioning nut 04, on the contrary, when the mounting part 102 moves downward, the friction wheel 1011 moves downward, so as to be able to separate from the outer circumferential surface of the tensioning nut 04.

[0144] In the embodiment, the radial driving part 103 is a pneumatic cylinder, which requires a small arrangement space and is easy to arrange. Of course, in actual implementation, the radial driving part 103 is not limited to a pneumatic cylinder, but can also be other types of linear extension structures.

[0145] The tightening device further comprises an abutting part 104, the mounting part 102 and the radial driving part 103 are mounted on the abutting part 104. The abutting part 104 has an abutting surface 1041 facing the front end of the tensioning rod, and is used to abut against the tensioning nut 04 in the front direction.

[0146] In the embodiment, the abutting portion 104 and the mounting portion 102 are connected through a guide assembly 105. The guide assembly 105 comprises a guide 1052 and a sliding member 1051 matched with the guide 1052. The guide 1052 is axially consistent with the moving direction of the mounting portion 102 to the tensioning nut 04. One of the guide 1052 and the sliding member 1051 is mounted on the abutting portion 104, and the other is mounted on the mounting portion 102. The mounting portion 102 moves along the radial direction of the tensioning nut 04 under the driving of the radial driving portion 103 and the guiding of the guide assembly 105.

[0147] In the embodiment, the guide 1052 is a column, and the sliding member 1051 is a block with a through hole. The block is sleeved on the outside of the column through the through hole and slides on the column through the through hole. The guide 1052 and the sliding member 1051 of such structure not only can play a guiding role, but also can connect the mounting portion 102 and the abutting portion 104 together, playing a connecting role. Of course, in actual implementation, the structure of the guide 1052 and the sliding member 1051 can be flexibly adjusted as needed, such as a linear bearing.

[0148] The abutting portion 104 is mounted on the top pressing portion 10 of the tensioning machine. In the embodiment, as shown in Figure 10 , the abutting portion 104 is provided with a sliding hole 1042a, and the top pressing portion 10 of the tensioning machine is provided with a sliding shaft extending along the axial direction of the tensioning nut 04. The abutting portion 104 is sleeved on the sliding shaft through the sliding hole 1042a, so as to slide on the sliding shaft, thereby driving the mounting portion 102 and the actuator 101 and the components connected thereto to slide. In short, after the tightening device in the embodiment is mounted on the top pressing portion 10, the abutting portion 104 and all the components mounted on the abutting portion 104 can move forward and backward relative to the top pressing portion 10. In this way, during use, the tensioning nut 04 can be tightened after the tensioning rod 03 moves to the position, or the tensioning nut 04 can be continuously tightened during the movement of the tensioning rod 03.

[0149] Moreover, as shown in Figure 10 , the tightening device is also provided with an axial driving portion 106 Figure 9 (not shown in the figure). The axial driving portion 106 is used to drive the abutting portion 104 to move forward, thereby driving the actuator 101 to move forward together, so as to move the actuator 101 to the position where the tensioning nut 04 is located. In this way, the actuator 101 can abut against the tensioning nut 04, so as to drive the tensioning nut 04 to move forward until the tensioning nut 04 abuts against the fixed component.

[0150] If the abutting part 104 is not provided, the actuator 101 can be driven to the front of the tension nut 04 under the driving action of the axial driving part 106, so that the friction wheel 1011 of the actuator 101 is misaligned with the tension nut 04, resulting in that the actuator 101 cannot effectively drive the tension nut 04 to rotate. By providing the abutting part 104, the situation can be effectively avoided, and the relative position of the tension nut 04 and the friction wheel 1011 in the front-back direction is stable, and the effect of pushing the tension nut 04 is also achieved. However, it should be pointed out that when the abutting part 104 abuts against the tension nut 04, interference with the friction section of the tension nut 04 in contact with the friction wheel 1011 should be avoided to ensure that the rotation of the tension nut 04 is not affected.

[0151] In the embodiment, the abutting surface 1041 is embedded with a ball 1043, the ball 1043 can roll relative to the abutting surface 1041, and the ball 1043 protrudes from the abutting surface 1041, and the abutting surface 1041 abuts against the tension nut 04 through the ball 1043. By setting in this way, the surface-to-surface contact is changed to surface-to-point contact, the frictional contact is reduced, and the rotation of the tension nut 04 is facilitated.

[0152] In the embodiment, as shown in Figure 10 The axial driving part 106 includes a resilient member 1061 and a blocking member 1062, the blocking member 1062 is fixedly connected with an external component other than the tightening device, in the figure, the blocking member 1062 is fixedly connected with the top pressing part 10 of the tension machine, the resilient member 1061 is arranged between the abutting part 104 and the blocking member 1062, the resilient member 1061 can store the elastic energy for moving the abutting part 104 forward during the forward movement of the top pressing part of the tension machine, and the resilient member 1061 drives the abutting part 104 to move forward by using the elastic energy, so that the abutting part abuts against the tension nut 04. The axial driving part 106 with such a structure can drive the abutting part 104 to move forward without additional power, so that the operation cost of the tightening device is relatively low. Of course, in actual implementation, the axial driving part 106 can also adopt a power-driven structure, such as an oil cylinder or an air cylinder.

[0153] Second embodiment of the screwing device 100

[0154] As shown in Figure 11 The tightening device is different from the first embodiment in that the axial driving part 106 is cancelled, and a sliding hole 1042b is arranged on the abutting part 104, which replaces the sliding hole 1042a.

[0155] In application, the fastener fixes the top pressing part 10 of the tension machine and the abutting part 104 together through the sliding hole 1042b, so that the relative position of the abutting part 104 and the top pressing part 10 of the tension machine is fixed.

[0156] During the tensioning process, the tensioning rod 03 moves backward, so the structure must continue to tighten the tensioning nut 04 during the movement of the tensioning rod 03 to drive the tensioning nut 04 to move forward relative to the tensioning rod 03, and during the tightening process, the abutting portion 104 can abut or not abut the tensioning nut 04, so the abutting portion 104 can not be provided with the ball 1043.

[0157] In addition, as shown in the first embodiment, Figure 11 the mounting portion 102 is provided with a mounting portion 102121, the notch of the mounting portion 102121 faces the tensioning rod (upward in the figure), and the mounting portion 102121 penetrates the mounting portion 102 from front to back, used to accommodate the tensioning rod 03, the size of the notch allows the tensioning rod to enter the mounting portion 102121, when the mounting portion 102 is driven by the radial driving portion 103 to approach the tensioning nut 04, the tensioning rod 03 can enter the mounting portion 102121 through the notch, which can avoid the tensioning rod 03 from colliding with the mounting portion 102 too early, thereby prolonging the service life of the tightening device; at the same time, it ensures that the friction wheel 1011 and the supporting wheel 1023 can effectively contact the tensioning nut 04, and ensures the driving effect.

[0158] In addition, as shown in the first embodiment, Figure 12 the mounting portion 102 is provided with a mounting portion 102121, the notch of the mounting portion 102121 faces the tensioning rod (upward in the figure), and the mounting portion 102121 penetrates the mounting portion 102 from front to back, used to accommodate the tensioning rod 03, the size of the notch allows the tensioning rod to enter the mounting portion 102121, when the mounting portion 102 is driven by the radial driving portion 103 to approach the tensioning nut 04, the tensioning rod 03 can enter the mounting portion 102121 through the notch, which can avoid the tensioning rod 03 from colliding with the mounting portion 102 too early, thereby prolonging the service life of the tightening device; at the same time, it ensures that the friction wheel 1011 and the supporting wheel 1023 can effectively contact the tensioning nut 04, and ensures the driving effect.

[0159] Third embodiment of the screwing device 100

[0160] As shown in the first embodiment, Figure 13 the mounting portion 102 is provided with a mounting portion 102121, the notch of the mounting portion 102121 faces the tensioning rod (upward in the figure), and the mounting portion 102121 penetrates the mounting portion 102 from front to back, used to accommodate the tensioning rod 03, the size of the notch allows the tensioning rod to enter the mounting portion 102121, when the mounting portion 102 is driven by the radial driving portion 103 to approach the tensioning nut 04, the tensioning rod 03 can enter the mounting portion 102121 through the notch, which can avoid the tensioning rod 03 from colliding with the mounting portion 102 too early, thereby prolonging the service life of the tightening device; at the same time, it ensures that the friction wheel 1011 and the supporting wheel 1023 can effectively contact the tensioning nut 04, and ensures the driving effect.

[0161] Since the friction wheel 1011 is a driving wheel and the support wheel 1023 is a driven wheel, the wear of the friction wheel 1011 is usually greater than that of the support wheel 1023. If the elastic support 1024 is not provided, the support wheel 1023 may first contact the tension nut 04 when the radial driving portion 103 drives the mounting portion 102 to move radially towards the tension nut 04 along the friction wheel 1011, while the friction wheel 1011 does not contact the tension nut 04. At this time, the mounting portion 102 cannot move further towards the tension nut 04 due to the contact between the support wheel 1023 and the tension nut 04, so that the actuator 101 cannot drive the tension nut 04 to rotate.

[0162] After the elastic support 1024 is provided, the mounting portion 102 can still move further towards the tension nut 04 after the support wheel 12 contacts the tension nut 04, so that the friction wheel 1011 can also contact the tension nut 04. Thus, the service life of the tightening device can be prolonged.

[0163] The tightening device for the tension nut and the tensioning machine provided by the present application are described in detail above. The principles and implementation modes of the present application are described by applying specific examples in this paper. The above examples are only used to help understand the method of the present application and its core idea. It should be pointed out that those skilled in the art can make some improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A tensioning machine, characterized in that The tensioning machine comprises a pressing part (10) and a radial driving mechanism, the front end wall of the pressing part (10) abuts against a fixed part fixed on a tensioning station during tensioning, the pressing part is at least partially rigid, the radial driving mechanism is used for driving the pressing part (10) to move along the radial direction of the tensioning rod (03), the pressing part (10) does not completely surround the tensioning rod (03) in the circumferential direction of the tensioning rod (03), thereby forming at least a non-surrounding area (10a) in the circumferential direction of the tensioning rod (03), the non-surrounding area (10a) is at least partially located on the radial movement path of the pressing part (10), so that the tensioning rod (03) can pass through the non-surrounding area (10a) during the radial movement of the pressing part (10); The radial driving mechanism comprises a first driving mechanism (60) used for driving the pressing part (10) to move along the first radial direction of the tensioning rod (03) to a position aligned with the next tensioning rod (03), the non-surrounding area (10a) is at least partially located on the first radial direction, the first radial direction is the left-right radial direction of the tensioning rod (03), so that the tensioning rod (03) can pass through the non-surrounding area (10a) during the movement of the pressing part (10) along the first radial direction; The tensioning machine further comprises a power part (30), the pressing part (10) is fixed on the front side of the housing of the power part (30), the rear end of the tensioning rod (03) extends to the rear of the front end wall of the pressing part (10) and is connected with the top rod (301) of the power part (30), the power part (30) applies tensioning prestress to the to-be-tensioned member connected with the tensioning rod (03) through the tensioning rod (03); The radial driving mechanism comprises a second driving mechanism (70), the second driving mechanism (70) is used for driving the power part (30) and the pressing part (10) to move along the up-down radial direction of the tensioning rod (03), an angle adjusting mechanism is arranged between the second driving mechanism (70) and the power part (30), the angle adjusting mechanism and the second driving mechanism (70) jointly act on the power part (30), so that the top rod (301) of the power part (30) is axially aligned with the tensioning rod (03).

2. The tensioning machine of claim 1, wherein A notch is arranged on the pressing part (10), the non-surrounding area (10a) is formed by using the notch, and / or the pressing part (10) has at least two subparts spaced from each other and located on different sides of the tensioning rod (03), the non-surrounding area (10a) is formed by using the space between the subparts or the pressing part (10) is arranged on one side of the tensioning rod (03), and the non-surrounding area (10a) is formed by using the side without the pressing part (10).

3. The tensioning machine of claim 2, wherein, The pressing part (10) comprises an upper part located on the upper side of the tensioning rod (03) and a lower part located on the lower side of the tensioning rod (03), and the upper part and the lower part of the pressing part (10) are arranged in an integrated structure.

4. The tensioning machine according to any one of claims 1-3, characterized in that The angle adjusting mechanism adopts one or a combination of joint type adjusting mechanism with rotary joint or flexible connecting mechanism with flexible connecting member, the rotary joint of the joint type adjusting mechanism adopts one or a combination of ball hinge structure or hinge shaft hinging structure.

5. The tensioning machine according to any one of claims 1-3, characterized in that, The first driving mechanism (60) comprises wheels and / or rails and / or tracks.

6. The tensioning machine according to any one of claims 1-3, characterized in that The top rod (301) is connected with the tensioning rod (03) through a tensioning connecting mechanism or is connected through one or a combination of threaded connection, pin connection and clamping. The tensioning connecting mechanism is installed on the top pressing part (10), and comprises a tensioning connecting member (40), the tensioning connecting member (40) is provided with a limiting groove, the end of the tensioning rod (03) and the end of the top rod (301) are provided with flanges matched with the limiting groove, and the top rod (301) is connected with the tensioning rod (03) through the flanges entering the limiting groove.

7. The tensioning machine of claim 6, wherein The tensioning connecting mechanism can move forward and backward relative to the top pressing part (10), and further comprises a radial driving assembly (50) for driving the tensioning connecting member (40) to move radially along the tensioning rod (03), and the tensioning connecting member (40) drives the flanges to enter or exit the limiting groove by moving radially along the tensioning rod (03).

8. The tensioning machine according to any one of claims 1-3, characterized in that, The tensioning machine further comprises a reset mechanism, the reset mechanism adopts an elastic mechanism (90a) with an elastic component and / or an electric driving mechanism (90b) with a motor, the elastic mechanism (90a) and the electric driving mechanism (90b) respectively drive the top pressing part (10) to move backward by using the elastic energy of the elastic component and the electric energy of the motor, so that the top pressing part (10) is separated from the fixed component on the tensioning station.

9. The tensioning machine according to any one of claims 1-3, characterized in that, The tensioning machine further comprises a tightening device (100) for tightening a tensioning nut (04) matched with the tensioning rod (03), the tightening device (100) is installed on the top pressing part (10), the tightening device comprises at least one driving mechanism (101), the driving mechanism (101) comprises at least one friction wheel (1011), the friction wheel (1011) is in contact with the outer circumferential surface of the tensioning nut, and the driving mechanism (101) drives the tensioning nut (04) to rotate on the tensioning rod (03) through the contact and friction between the friction wheel (1011) and the outer circumferential surface of the tensioning nut (04).

Images