A reinforcing steel prestress tensioning machine and a method of using the same

Abstract

This invention discloses a prestressed steel bar tensioning machine and its usage method, relating to the field of building engineering technology. It includes a machine body with a fixed frame mounted on its top; a control mechanism located above the machine body, comprising a tensioning mechanism and a connecting seat; an adjusting column mounted at the bottom of the connecting seat, and a base mounted at the bottom of the adjusting column, the adjusting column being used to control the height of the machine body; and a connecting mechanism located inside the fixed frame, comprising a second adjusting rod with a suction cup mounted on its exterior, the suction cup being used to adhere and fix the steel bar to the wall surface. The connecting seat is mounted at the bottom of the machine body, and casters are mounted at the bottom of the base. Three connecting seats, three adjusting columns, and three bases are provided. This prestressed steel bar tensioning machine and its usage method achieve the goal of improving equipment efficiency.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, specifically to a prestressed steel bar tensioning machine and its usage method. Background Technology

[0002] Prestressing tensioning equipment is the equipment used to apply prestress values. It generates prestress-related values ​​through the operation of the equipment. Prestressing tensioning equipment mainly consists of jacks and electric hydraulic pumps used in conjunction to increase the strength of the steel strands or reinforcing bars in the anchorages, thereby imparting the prestress value.

[0003] A patent for invention with authorization announcement number CN110561614B discloses a prestressed steel bar tensioning and release device. This device clamps the steel bar requiring prestressing using a clamping mechanism, then a tensioning motor drives a tensioning screw to rotate, changing the length of the screw and thus altering the position of the clamping mechanism. The steel bar is then pulled to a preset length, and a hydraulic rod maintains the prestress after reaching the preset length. During the release process, a pre-tightening nut is first clamped by the clamping mechanism, then the release motor drives the hydraulic rod and the clamping mechanism to rotate, releasing the pre-tightening nut. However, when tensioning steel bars at heights different from the equipment height, the steel bars tend to tilt, affecting the tensioning process. Summary of the Invention

[0004] To overcome the problem that when tensioning steel bars at different heights from the equipment, the steel bars are prone to tilting, which affects the tensioning process, this invention provides a steel bar prestressing tensioning machine, including a machine body, on the top of which a fixing frame is installed;

[0005] A control mechanism is located above the machine body. The control mechanism includes a tensioning mechanism and a connecting seat. An adjusting column is installed at the bottom of the connecting seat, and a base is installed at the bottom of the adjusting column. The adjusting column is used to control the height of the machine body.

[0006] A connecting mechanism is provided inside the fixing frame. The connecting mechanism includes a second adjusting rod, and a suction cup is installed on the outside of the second adjusting rod. The suction cup is used to adhere and fix the steel bar to the wall surface.

[0007] Preferably, the connecting seat is installed at the bottom of the machine body, the bottom of the base is equipped with casters, and there are three connecting seats, three adjusting columns, and three bases. The tensioning mechanism is located at the top of the machine body.

[0008] Preferably, the control mechanism further includes:

[0009] A rotating shaft is mounted on the outside of the machine body, and a placement mechanism is connected to the outside of the rotating shaft;

[0010] A motor housing is installed outside the machine body, and a motor is installed inside the motor housing. The rotating shaft is connected to the output end of the motor.

[0011] Preferably, the placement mechanism includes:

[0012] A chassis, the chassis being connected to a rotating shaft, and a first lifting plate being mounted on the top of the chassis;

[0013] The first fixing ring is installed inside the chassis. The first fixing ring has a first channel inside. The top of the first fixing ring is equipped with a first elastic rod. There are two first elastic rods, which are arranged symmetrically.

[0014] The first slide groove is formed inside the chassis, and a first slide plate is slidably connected inside the first slide groove. A connecting component is installed on the outside of the first slide plate.

[0015] A backrest is mounted on top of the chassis, and a fixing cylinder is installed inside the backrest.

[0016] Preferably, the connection component includes:

[0017] A first push rod is mounted on the outside of a first slide plate, and a connecting cylinder is mounted on the outside of the first push rod;

[0018] A positioning cylinder is connected to the outside of a connecting cylinder. A second push rod is installed inside the positioning cylinder, and a brush head is installed outside the second push rod.

[0019] A first adjusting rod is installed on the outside of the connecting cylinder;

[0020] The second fixing ring is installed outside the first adjusting rod. The second fixing ring has a second channel inside. The second fixing ring has a second elastic rod installed outside the second fixing ring. Multiple second elastic rods are provided.

[0021] The third fixing ring is installed outside the second fixing ring, and the third fixing ring has a third channel inside.

[0022] Preferably, the connecting mechanism further includes:

[0023] The second slide is formed inside the fixed frame. The second slide is slidably connected to the second slide plate and the slide frame. The second slide plate is equipped with a limit component on its outside.

[0024] A connecting ring, which is connected to the tensioning mechanism and to the limiting component;

[0025] A through groove is formed inside the fixed frame. A movable plate is slidably connected inside the through groove. The movable plate is connected to a second adjusting rod. A spring is installed on the outside of the movable plate.

[0026] Preferably, the limiting component includes:

[0027] A central column, which is connected to a connecting ring and a second sliding plate;

[0028] A positioning frame, which is installed on the outside of the central column and is connected to the sliding frame;

[0029] A groove is formed inside the slot frame, a third push rod is installed inside the groove, and a semi-ring is installed outside the third push rod.

[0030] Preferably, the limiting component further includes:

[0031] A fixing groove is formed inside the mounting bracket;

[0032] The second lifting plate is installed above the positioning frame, and a blocking plate and a positioning rod are installed at the bottom of the second lifting plate.

[0033] This invention provides a method for using a prestressed steel bar tensioning machine, comprising the following steps:

[0034] S1. Before using the equipment, adjust the control mechanism and connection mechanism to make the equipment and the height of the steel bars match, and fix the position of the equipment.

[0035] S2. Adjust the placement mechanism and tensioning mechanism to prepare for the tensioning test of the equipment;

[0036] S3. Adjust the connection mechanism to fix the position of the steel bar, and start the tensioning mechanism to tension the steel bar;

[0037] S4. After the work is completed, adjust the tensioning mechanism and the connecting mechanism, then release the steel bars. After the work is completed, adjust the placement mechanism and place and protect the power cord.

[0038] This invention provides a prestressed steel bar tensioning machine and its method of use. It has the following beneficial effects:

[0039] This prestressed steel bar tensioning machine and its operating method utilize a connection and control mechanism. The stroke of the adjusting column is manually adjusted to control the height of the suction cup, which then adheres to the wall surface where the steel bar is located, thus securing the equipment. When tensioning steel bars at heights different from the machine's height, the bars are prone to tilting, affecting the tensioning process. Therefore, the connection and control mechanisms are included to adjust the equipment height, ensuring the tensioning mechanism's height matches the steel bar's height, thus resolving this issue. Furthermore, the suction cups ensure a closer fit between the fixing frame and the wall surface, preventing frame movement during tensioning and ensuring optimal tensioning results.

[0040] This prestressed steel tensioning machine and its operating method protect the power cord connection end by setting up a placement mechanism and connecting components. During equipment movement, the power cord is disconnected, and the connection end is prone to friction and collision with the equipment, as well as dust and impurities accumulating there. Therefore, the placement mechanism and connecting components are installed to fix and place the power cord. When the power cord is not in use, the connection end is contained within a fixed cylinder, thus protecting it. Furthermore, the inside of the fixed cylinder can be periodically cleaned with a brush head to reduce dust and impurities within it.

[0041] This prestressed steel bar tensioning machine and its operating method utilize a connecting mechanism to fix the equipment position. By controlling the suction cups to adhere to the wall surface where the steel bars are located, the equipment position is reinforced, ensuring a closer fit between the fixing frame and the wall. This prevents the fixing frame from shifting during tensioning, which could lead to unsatisfactory tensioning results.

[0042] This prestressed steel bar tensioning machine and its operating method utilize a limiting component to fix the steel bars. When fixing the steel bars, a suitable set of third push rods and semi-rings are selected based on the bar size to secure them, allowing for the fixing of various sizes of steel bars. After tensioning, the state of the second lifting plate is adjusted so that the blocking plate presses and fixes the bar to the steel bar, providing protection and preventing movement and potential worker injury in the event of a sudden power outage. Workers disconnect the power cord and secure it before opening the second lifting plate to allow for steel bar removal, thus enhancing equipment safety. Attached Figure Description

[0043] Figure 1 This is a flowchart of the present invention;

[0044] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0045] Figure 3 This is a schematic diagram of the top structure of the present invention;

[0046] Figure 4 This is a schematic diagram of the control mechanism structure of the present invention;

[0047] Figure 5 This is a schematic diagram of the placement mechanism of the present invention;

[0048] Figure 6 This is a schematic diagram of the internal structure of the placement mechanism of the present invention;

[0049] Figure 7 This is a schematic diagram of the connection component structure of the present invention;

[0050] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point A;

[0051] Figure 9 This is a schematic diagram of the connection mechanism structure of the present invention;

[0052] Figure 10 For the present invention Figure 9 Schematic diagram of the structure at point B;

[0053] Figure 11 This is a schematic diagram of the limiting component structure of the present invention;

[0054] Figure 12 For the present invention Figure 11 A schematic diagram of the structure at point C.

[0055] In the diagram: 1. Body; 2. Control mechanism; 201. Connecting seat; 202. Adjusting column; 203. Base; 204. Tensioning mechanism; 205. Rotating shaft; 206. Motor box; 3. Placement mechanism; 301. Chassis; 302. First lifting plate; 303. First fixing ring; 304. First elastic rod; 305. First slide rail; 306. First sliding plate; 307. Connecting assembly; 3071. First push rod; 3072. Connecting cylinder; 3073. Positioning cylinder; 3074. Second push rod; 3075. Brush head; 3076. First adjusting rod; 3077. Second fixing ring; 3078. 3. Fixed ring; 3079. Second elastic rod; 308. Backing plate; 309. Fixed cylinder; 4. Fixed frame; 5. Connecting mechanism; 501. Second slide groove; 502. Connecting ring; 503. Limiting component; 5031. Central column; 5032. Positioning frame; 5033. Groove; 5034. Third push rod; 5035. Half ring; 5036. Fixed groove; 5037. Second lifting plate; 5038. Positioning rod; 5039. Blocking plate; 504. Second sliding plate; 505. Through groove; 506. Moving plate; 507. Second adjusting rod; 508. Suction cup; 509. Spring; 510. Sliding frame. Detailed Implementation

[0056] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0057] like Figures 1-12 As shown, the present invention provides a technical solution: including a body 1, and a fixing frame 4 is installed on the top of the body 1;

[0058] Control mechanism 2 is located above body 1. Control mechanism 2 includes tensioning mechanism 204 and connecting seat 201. An adjusting column 202 is installed at the bottom of connecting seat 201, and a base 203 is installed at the bottom of adjusting column 202. Adjusting column 202 is used to control the height of body 1 so that tensioning mechanism 204 is at the same height as the steel bar. Connecting seat 201 is installed at the bottom of body 1, and universal wheels are installed at the bottom of base 203. There are three of each of connecting seat 201, adjusting column 202 and base 203. Tensioning mechanism 204 is located above body 1.

[0059] The connecting mechanism 5 is located inside the fixed frame 4. The connecting mechanism 5 includes a second adjusting rod 507. A suction cup 508 is installed on the outside of the second adjusting rod 507. The suction cup 508 is used to adhere and fix to the wall surface where the steel bar is located, thereby fixing the position of the equipment and calibrating the height of the equipment. The tensioning mechanism 204 is equipped with an electric oil pump, which drives the jack to drive the connecting mechanism 5 to perform tensioning work.

[0060] Before using the equipment, adjust the control mechanism 2 and the connecting mechanism 5 to ensure the equipment is at the same height as the reinforcing bar and fix the equipment position. Then adjust the placement mechanism 3 and the tensioning mechanism 204 to prepare for tensioning. Next, adjust the connecting mechanism 5 to fix the reinforcing bar position, and then activate the tensioning mechanism 204 to tension the reinforcing bar. After tensioning, adjust the tensioning mechanism 204 and the connecting mechanism 5 to release the reinforcing bar. Adjust the placement mechanism 3, and after the work is completed, protect the power cord.

[0061] Control mechanism 2 also includes:

[0062] A rotating shaft 205 is installed on the outside of the machine body 1, and a placement mechanism 3 is connected to the outside of the rotating shaft 205;

[0063] Motor housing 206 is installed outside the body 1. The motor is installed inside the motor housing 206, and the rotating shaft 205 is connected to the output end of the motor.

[0064] When cleaning the placement mechanism 3, the motor in the motor box 206 is turned on. The motor drives the rotating shaft 205 and the placement mechanism 3 to deflect, which promotes the sliding of dust and impurities in the placement mechanism 3.

[0065] When adjusting the height of the equipment, manually adjust the stroke of the adjusting column 202 so that the suction cup 508 reaches the same height as the reinforcing bar.

[0066] Placement mechanism 3 includes:

[0067] The chassis 301 is connected to the rotating shaft 205, and the top of the chassis 301 is equipped with a first lifting plate 302.

[0068] The first fixing ring 303 is installed inside the chassis 301. The first fixing ring 303 has a first channel inside. The top of the first fixing ring 303 is equipped with a first elastic rod 304. There are two first elastic rods 304, which are symmetrically arranged. The first fixing ring 303 is made of rubber. The power cord is located in the first fixing ring 303. Multiple first ventilation holes are opened in the first fixing ring 303 to facilitate heat dissipation of the power cord.

[0069] The first slide 305 is opened inside the chassis 301. The first slide 305 is slidably connected to the inside of the first slide 305. The connecting component 307 is installed on the outside of the first slide 306. The first power system is installed inside the first slide 306.

[0070] The back plate 308 is installed above the chassis 301, and the fixing cylinder 309 is installed inside the back plate 308.

[0071] Before using the equipment, activate the first lifting plate 302. The first lifting plate 302 gradually moves away from the chassis 301 to reserve working space for placing the power cord. Activate the first power system in the first slide plate 306. The first slide plate 306 begins to move in the first slide groove 305, positioning the first slide plate 306 in the center of the first slide groove 305. The first slide plate 306 then drives the connecting component 307 to move.

[0072] Manually insert the power cord in the tensioning mechanism 204 into the first fixing ring 303 and insert the connection end of the power cord into the connecting component 307. Then adjust the first power system in the first slide plate 306 and adjust the connecting component 307 so that the connection end of the power cord is in the fixing cylinder 309 to protect the connection end.

[0073] Before testing the equipment, adjust the first power system in the first slide plate 306 and adjust the connecting component 307 so that the connection end of the power cord is detached from the fixed cylinder 309. The worker manually pulls the connection end and installs the power cord to carry out testing and tensioning work.

[0074] After the work is completed, adjust the position of the power cord in the connecting assembly 307 so that the connecting end of the power cord returns to the fixed cylinder 309.

[0075] Connection component 307 includes:

[0076] The first push rod 3071 is installed on the outside of the first slide plate 306, and a connecting cylinder 3072 is installed on the outside of the first push rod 3071.

[0077] The positioning cylinder 3073 is connected to the outside of the connecting cylinder 3072. The second push rod 3074 is installed inside the positioning cylinder 3073, and the brush head 3075 is installed outside the second push rod 3074.

[0078] The first adjusting rod 3076 is installed on the outside of the connecting cylinder 3072;

[0079] The second fixing ring 3077 is installed outside the first adjusting rod 3076. The second fixing ring 3077 has a second channel inside and a second elastic rod 3079 is installed outside the second fixing ring 3077. Multiple second elastic rods 3079 are provided. The second fixing ring 3077 is made of rubber and has multiple second ventilation holes to facilitate heat dissipation of the power cord.

[0080] The third fixing ring 3078 is installed outside the second fixing ring 3077. The third fixing ring 3078 has a third channel inside and is made of rubber.

[0081] Activate the first push rod 3071. The first push rod 3071 drives the connecting cylinder 3072 and the first adjusting rod 3076 to move. The first adjusting rod 3076 drives the second fixing ring 3077 to move until the second fixing ring 3077 is in the middle area of ​​the chassis 301. Manually move the second spring rod 3079 and manually insert the power cord into the second fixing ring 3077 so that the connection end of the power cord is outside the third fixing ring 3078, thereby fixing the position of the connection end of the power cord.

[0082] When it is necessary to protect the connection end of the power cord, adjust the first push rod 3071 to the initial state and turn on the first power system in the first slide plate 306. The first slide plate 306 drives the first push rod 3071, the connecting cylinder 3072, the first adjusting rod 3076, the second fixing ring 3077 and the connection end of the power cord to move until the connection end of the power cord enters the fixing cylinder 309.

[0083] When the device is not in use, the first push rod 3071 is turned on. The first push rod 3071 drives the connecting cylinder 3072 and the positioning cylinder 3073 to move. The second push rod 3074 in the positioning cylinder 3073 is turned on to the reciprocating motion mode. The second push rod 3074 drives the brush head 3075 to repeatedly rub against the inside of the fixed cylinder 309, promoting the removal of dust and impurities from the fixed cylinder 309.

[0084] The connecting mechanism 5 also includes:

[0085] The second slide 501 is opened inside the fixed frame 4. The second slide 501 is slidably connected to the second slide plate 504 and the slide frame 510. The limit component 503 is installed on the outside of the second slide plate 504.

[0086] Connecting ring 502 is connected to the jack in tensioning mechanism 204 and to limiting component 503;

[0087] A through groove 505 is formed inside the fixed frame 4. A movable plate 506 is slidably connected inside the through groove 505. The movable plate 506 is connected to the second adjusting rod 507. A spring 509 is installed on the outside of the movable plate 506. The spring 509 is installed inside the second slide groove 501.

[0088] Before using the equipment, push it to the area of ​​the steel bar to be tensioned and manually adjust the stroke of the adjusting column 202 so that the suction cup 508 is at the same height as the steel bar. Turn on the tensioning mechanism 204. The tensioning mechanism 204 drives the connecting ring 502, the limiting component 503, the second sliding plate 504, and the sliding frame 510 to move towards the steel bar. The sliding frame 510 begins to squeeze the moving plate 506. The moving plate 506 drives the second adjusting rod 507 and the suction cup 508 to move outward. At this time, the spring 509 is compressed until the suction cup 508 is attracted and fixed to the wall where the steel bar is located. Observe whether the height of the suction cup 508 is consistent with the steel bar. If not, adjust the tensioning mechanism 204 and pry open the suction cup 508. Readjust the stroke of the adjusting column 202 and repeat the above actions to make the height of the suction cup 508 consistent with the steel bar.

[0089] By setting up the connecting mechanism 5 and the control mechanism 2, the stroke of the adjusting column 202 can be manually adjusted to control the height of the suction cup 508, and then the suction cup 508 can be controlled to adhere and fix to the wall where the steel bar is located, thereby strengthening the position of the equipment and making the fixing frame 4 fit more closely to the wall, so as to avoid the fixed frame 4 from moving during the tensioning process, which would result in an unsatisfactory tensioning effect.

[0090] Limiting component 503 includes:

[0091] The center column 5031 is connected to the connecting ring 502 and the second slide plate 504.

[0092] The positioning frame 5032 is installed on the outside of the central column 5031 and is connected to the sliding frame 510.

[0093] The groove 5033 is formed inside the slot frame 5032. The third push rod 5034 is installed inside the groove 5033. The semi-ring 5035 is installed outside the third push rod 5034. There are three sets of the third push rod 5034 and the semi-ring 5035. Each set has two third push rods 5034 and two semi-rings 5035. Each set is symmetrical. The three sets of semi-rings 5035 have different sizes.

[0094] The fixing slot 5036 is formed inside the mounting bracket 5032;

[0095] The second lifting plate 5037 is installed above the positioning frame 5032, and the bottom of the second lifting plate 5037 is equipped with a blocking plate 5039 and a positioning rod 5038.

[0096] Before installing the reinforcing bars, select a suitable set of third push rods 5034 and half-rings 5035 according to the size of the reinforcing bars. Open the second lifting plate 5037, which gradually disengages from the clamping frame 5032. As the tensioning mechanism 204 moves the connecting ring 502 and the clamping frame 5032, the reinforcing bars gradually move through the fixing groove 5036 to between the two half-rings 5035. Open the corresponding set of third push rods 5034, which drive the two half-rings 5035 towards the center. The two half-rings 5035 clamp and fix one end of the reinforcing bar, with the reinforcing bar extending beyond the half-rings 5035. Then, use nuts to reinforce the portion of the reinforcing bar extending beyond the half-rings 5035.

[0097] After the tensioning work is completed, the second lifting plate 5037 is adjusted to the initial state, the locking rod 5038 is inserted into the locking frame 5032, and the blocking plate 5039 is pressed and fixed on the steel bar. Then, the worker disconnects the power cord and opens the second lifting plate 5037 to allow the worker to disassemble the steel bar.

[0098] Working principle: Before using the equipment, adjust the control mechanism 2 and the connecting mechanism 5 to make the equipment and the steel bar height match, and fix the equipment position.

[0099] Before using the equipment, push it to the area of ​​the steel bar to be tensioned and manually adjust the stroke of the adjusting column 202 so that the suction cup 508 is at the same height as the steel bar. Turn on the tensioning mechanism 204. The tensioning mechanism 204 drives the connecting ring 502, the limiting component 503, the second sliding plate 504, and the sliding frame 510 to move towards the steel bar. The sliding frame 510 begins to squeeze the moving plate 506. The moving plate 506 drives the second adjusting rod 507 and the suction cup 508 to move outward. At this time, the spring 509 is compressed until the suction cup 508 is attracted and fixed to the wall where the steel bar is located. Observe whether the height of the suction cup 508 is consistent with the steel bar. If not, adjust the tensioning mechanism 204 and pry open the suction cup 508. Readjust the stroke of the adjusting column 202 and repeat the above actions to make the height of the suction cup 508 consistent with the steel bar.

[0100] Subsequently, the placement mechanism 3 and the tensioning mechanism 204 are adjusted to prepare for pre-tensioning testing of the equipment. Before using the equipment, the first lifting plate 302 is activated, and it gradually moves away from the chassis 301 to provide working space for the power cable. The first power system in the first sliding plate 306 is activated, and the first sliding plate 306 begins to move in the first slide groove 305, positioning it in the center of the first slide groove 305. The first sliding plate 306 then drives the connecting component 307 to move.

[0101] Manually insert the power cord in the tensioning mechanism 204 into the first fixing ring 303 and insert the connecting end of the power cord into the connecting assembly 307. Activate the first push rod 3071, which drives the connecting cylinder 3072 and the first adjusting rod 3076 to move. The first adjusting rod 3076 drives the second fixing ring 3077 to move until the second fixing ring 3077 is in the middle area of ​​the chassis 301. Manually move the second elastic rod 3079 and manually insert the power cord into the second fixing ring 3077, so that the connecting end of the power cord is outside the third fixing ring 3078, thereby fixing the position of the power cord connecting end.

[0102] The first power system in the first slide plate 306 is then adjusted, and the connecting component 307 is adjusted so that the connection end of the power cord is in the fixed cylinder 309 to protect the connection end. The first push rod 3071 is adjusted to the initial state, and the first power system in the first slide plate 306 is activated. The first slide plate 306 drives the first push rod 3071, the connecting cylinder 3072, the first adjusting rod 3076, the second fixing ring 3077, and the connection end of the power cord to move until the connection end of the power cord enters the fixed cylinder 309.

[0103] Before testing the equipment, adjust the first power system in the first slide plate 306 and adjust the stroke of the first push rod 3071 in the connecting assembly 307 so that the connection end of the power cord is disengaged from the fixed cylinder 309. The worker manually pulls the connection end and installs the power cord to carry out testing and tensioning work.

[0104] Then, adjust the connecting mechanism 5 to fix the position of the reinforcing bar. Before installing the reinforcing bar, select a suitable set of third push rods 5034 and half-rings 5035 according to the size of the reinforcing bar. Open the second lifting plate 5037, which gradually disengages from the clamping frame 5032. As the tensioning mechanism 204 moves the connecting ring 502 and the clamping frame 5032, the reinforcing bar gradually moves through the fixing groove 5036 to between the two half-rings 5035. Open the corresponding set of third push rods 5034, which move the two half-rings 5035 towards the center. The two half-rings 5035 clamp and fix one end of the reinforcing bar, with the reinforcing bar extending beyond the half-rings 5035. Then, use nuts to reinforce the portion of the reinforcing bar extending beyond the half-rings 5035. Open the tensioning mechanism 204 to tension the reinforcing bar.

[0105] After tensioning is completed, adjust the tensioning mechanism 204 and the connecting mechanism 5, release the reinforcing bars, and adjust the placement mechanism 3.

[0106] After the tensioning work is completed, adjust the second lifting plate 5037 to the initial state, insert the locking rod 5038 into the locking frame 5032, and press and fix the blocking plate 5039 onto the steel bar. The worker manually pulls the position of the power cable in the second fixing ring 3077 so that the connection end of the power cable returns to the fixing cylinder 309. Then, open the second lifting plate 5037 to allow the worker to disassemble the steel bar.

[0107] This invention provides a method for using a prestressed steel bar tensioning machine, comprising the following steps:

[0108] S1. Before using the equipment, adjust the control mechanism 2 and the connecting mechanism 5 to make the equipment match the height of the steel bars and fix the equipment position.

[0109] S2. Adjust the placement mechanism 3 and the tensioning mechanism 204 to carry out pre-tensioning test preparation work for the equipment;

[0110] S3. Adjust the connecting mechanism 5 to fix the position of the steel bar, and start the tensioning mechanism 204 to tension the steel bar.

[0111] S4. After tensioning is completed, adjust the tensioning mechanism 204 and the connecting mechanism 5, then release the steel bars. After the work is completed, adjust the placement mechanism 3 to place and protect the power cord.

[0112] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A reinforcing steel prestressing tensioning machine comprising a machine body (1), characterized in that: A mounting bracket (4) is installed on the top of the body (1). The control mechanism (2) is located above the body (1). The control mechanism (2) includes a tensioning mechanism (204), a connecting seat (201), and a rotating shaft (205). An adjusting column (202) is installed at the bottom of the connecting seat (201), and a base (203) is installed at the bottom of the adjusting column (202). The adjusting column (202) is used to control the height of the body (1). The rotating shaft (205) is installed outside the body (1), and a placement mechanism (3) is connected to the outside of the rotating shaft (205). A connecting mechanism (5) is provided inside the fixing frame (4). The connecting mechanism (5) includes a second adjusting rod (507) and a second sliding groove (501). A suction cup (508) is installed on the outside of the second adjusting rod (507). The suction cup (508) is used to be attracted and fixed to the wall surface where the steel bar is located. The second sliding groove (501) is opened inside the fixing frame (4). A second sliding plate (504) and a sliding frame (510) are slidably connected inside the second sliding groove (501). A limit component (503) is installed on the outside of the second sliding plate (504). The placement mechanism (3) includes: A chassis (301) is connected to a rotating shaft (205), and a first lifting plate (302) is installed on the top of the chassis (301). The first slide groove (305) is opened inside the chassis (301), and the first slide plate (306) is slidably connected inside the first slide groove (305). A connecting component (307) is installed on the outside of the first slide plate (306). The connection component (307) includes: A first push rod (3071) is mounted on the outside of a first slide plate (306), and a connecting cylinder (3072) is mounted on the outside of the first push rod (3071). A positioning cylinder (3073) is connected to the outside of a connecting cylinder (3072). A second push rod (3074) is installed inside the positioning cylinder (3073), and a brush head (3075) is installed outside the second push rod (3074). The connecting mechanism (5) further includes: A connecting ring (502) is connected to the tensioning mechanism (204) and to the limiting component (503); A through groove (505) is formed inside the fixed frame (4). A movable plate (506) is slidably connected inside the through groove (505). The movable plate (506) is connected to the second adjusting rod (507). A spring (509) is installed on the outside of the movable plate (506).

2. The steel bar prestress tensioning machine according to claim 1, characterized in that: The connecting seat (201) is installed at the bottom of the body (1), and the bottom of the base (203) is equipped with casters. There are three of each of the connecting seat (201), adjusting column (202) and base (203), and the tensioning mechanism (204) is located above the body (1).

3. The prestressed steel tensioning machine according to claim 1, characterized in that: The control mechanism (2) further includes: The motor housing (206) is installed outside the body (1), and the motor is installed inside the motor housing (206). The rotating shaft (205) is connected to the output end of the motor.

4. The prestressed steel tensioning machine according to claim 3, characterized in that: The placement mechanism (3) includes: The first fixing ring (303) is installed inside the chassis (301). The first fixing ring (303) has a first channel inside. The top of the first fixing ring (303) is equipped with a first elastic rod (304). There are two first elastic rods (304) arranged symmetrically. A backrest (308) is mounted above the chassis (301), and a fixing cylinder (309) is installed inside the backrest (308).

5. The prestressed steel tensioning machine according to claim 4, characterized in that: The connection component (307) further includes: The first adjusting rod (3076) is installed on the outside of the connecting cylinder (3072); The second fixing ring (3077) is installed outside the first adjusting rod (3076). The second fixing ring (3077) has a second channel inside. The second fixing ring (3077) is installed outside the second fixing ring (3077). Multiple second elastic rods (3079) are provided. The third fixing ring (3078) is installed outside the second fixing ring (3077), and the third fixing ring (3078) has a third channel inside.

6. The prestressed steel tensioning machine according to claim 1, characterized in that: The limiting component (503) includes: A central column (5031) is connected to a connecting ring (502) and a second sliding plate (504); A positioning frame (5032) is installed outside the central column (5031) and is connected to the sliding frame (510); A groove (5033) is formed inside the card holder (5032). A third push rod (5034) is installed inside the groove (5033), and a semi-ring (5035) is installed outside the third push rod (5034).

7. The prestressed steel tensioning machine according to claim 6, characterized in that: The limiting component (503) further includes: A fixing groove (5036) is formed inside the card holder (5032); The second lifting plate (5037) is installed above the positioning frame (5032), and the bottom of the second lifting plate (5037) is equipped with a blocking plate (5039) and a positioning rod (5038).

8. The method of using a steel tendon stressing machine according to any one of claims 1-7, wherein, Includes the following steps: S1. Before using the equipment, adjust the control mechanism (2) and the connection mechanism (5) to make the equipment and the steel bar height match and fix the equipment position; S2. Adjust the placement mechanism (3) and the tensioning mechanism (204) to prepare for the tensioning test of the equipment; S3. Adjust the connecting mechanism (5) to fix the position of the steel bar, and start the tensioning mechanism (204) to tension the steel bar; S4. After the work is completed, adjust the tensioning mechanism (204) and the connecting mechanism (5), then release the steel bars. After the work is completed, adjust the placement mechanism (3) and place and protect the power line.

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