Clamping mechanism of concrete pipe lifting device

Abstract

The invention belongs to the technical field of lifting devices, and particularly relates to a clamping mechanism of a concrete pipe lifting device, the clamping mechanism comprises a lifting cross beam, two pipe clamping jaws are slidably mounted on the lifting cross beam, the moving directions of the two pipe clamping jaws are opposite, the lower ends of the two pipe clamping jaws both extend to the lower portion of the lifting cross beam and are provided with semicircular grooves, and the semicircular grooves are arranged on the lifting cross beam. Bent reinforcing plates are fixedly connected to the two sides of the lifting cross beam correspondingly, the sides, away from the lifting cross beam, of the bent reinforcing plates extend to the positions below the pipe clamping jaws, an arc-shaped long groove is formed in the top of the pipe bearing table, and a concrete pipe body is placed in the arc-shaped long groove. According to the concrete pipe clamping device, when the servo motor works, the two pipe clamping jaws move oppositely, namely, the pipe clamping jaws pull the pipe bearing table through the inelastic rope, so that the pipe bearing table can synchronously move upwards before the pipe clamping jaws complete clamping, the interlocking movement effect is better, and the purpose of preventing concrete pipes from falling off can be achieved.

Description

Technical Field

[0001] The present invention relates to a lifting device for concrete pipes, and more particularly to a clamping mechanism of a lifting device for concrete pipes. Background Art

[0002] Concrete pipes are pipes made of concrete or reinforced concrete, mainly used for transporting fluids such as water, oil, and gas. When installing concrete pipes, it is necessary to lift the concrete pipes to the designated position for installation. Since concrete pipes are usually hollow tubular, it is usually necessary to use a lifting fixture to clamp the concrete pipes during the lifting process, so as to facilitate the lifting of the concrete pipes.

[0003] However, in the prior art: during the process of clamping the concrete pipe by the lifting fixture of the concrete pipe, due to the lack of limiting the two robotic arms of the lifting fixture or the insufficient limiting of the two robotic arms, the two robotic arms are prone to loosen during the lifting of the concrete pipe, thus affecting the safety and stability of the lifting of the concrete pipe and easily generating certain potential safety hazards; and when clamping, there is no mechanism for straightening the concrete pipe, so that the concrete pipe is prone to shake before clamping, and the application flexibility is lacking. Summary of the Invention

[0004] The main purpose of the present disclosure is to provide a clamping mechanism of a lifting device for concrete pipes to effectively solve the problems raised by the inventor in the above background art.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A clamping mechanism of a lifting device for concrete pipes includes a lifting crossbeam, on which two pipe clamping claws are slidably installed, and the moving directions of the two pipe clamping claws are opposite. The lower ends of the two pipe clamping claws extend below the lifting crossbeam and are provided with semi-circular grooves. Both sides of the lifting crossbeam are fixedly connected with bending strengthening plates, and the sides of the bending strengthening plates away from the lifting crossbeam extend below the pipe clamping claws;

[0007] A pipe bearing platform, on the top of which an arc-shaped long groove is opened, and a concrete pipe body is placed in the arc-shaped long groove. A jacking groove is opened at the bottom of the arc-shaped long groove, and two jacking plates are slidably installed in the jacking groove. The tops of the two jacking plates are in contact with the bottom of the concrete pipe body, and the bottoms of the jacking plates are abutted against the bottom of the jacking groove;

[0008] A linear driving assembly for driving the two pipe clamping claws to move, and the two pipe clamping claws for clamping the concrete pipe body;

[0009] A pipe lifting assembly for driving the jacking plate to move in the jacking groove;

[0010] An active force - applying component, the active force - applying component is matched with the pipe lifting component, and the active force - applying component is located below the bending reinforcement plate;

[0011] A rope assembly, the rope assembly is connected between the pipe gripper and the pipe bearing platform, used to drive the pipe bearing platform to lift and lower, and the rope assembly is respectively matched with the linear driving component and the active force - applying component.

[0012] Preferably, the linear driving component includes a rectangular slide rail, an X - axis bidirectional lead screw, and a driving mechanism. A rectangular slide rail is provided on the lifting crossbeam. The X - axis bidirectional lead screw is rotatably installed in the rectangular slide rail. The two pipe grippers are respectively threadedly installed at two parts of the X - axis bidirectional lead screw with opposite thread directions, and both pipe grippers are slidably installed in the rectangular slide rail. The upper and lower ends of the pipe gripper extend out of the rectangular slide rail, and the driving mechanism is used to drive the X - axis bidirectional lead screw to rotate.

[0013] Preferably, the driving mechanism includes a transmission chamber, a first bevel gear, a servo motor, and a second bevel gear. The transmission chamber is opened in the lifting crossbeam. The right end of the X - axis bidirectional lead screw extends into the transmission chamber, and a first bevel gear is fixedly installed on the part of the X - axis bidirectional lead screw located in the transmission chamber. The servo motor is fixedly installed on the right side of the top of the lifting crossbeam, and the output end of the servo motor extends into the transmission chamber and is fixedly connected with a second bevel gear. The second bevel gear meshes with the first bevel gear.

[0014] Preferably, the pipe lifting component includes a movable rail cavity, a horizontal lifting plate, a rotating shaft, a linkage gear, and a first Y - axis rack. Movable rail cavities are opened on both sides of the lifting groove. Horizontal lifting plates are slidably installed in the two movable rail cavities, and the side surface of the horizontal lifting plate is fixedly connected with the lifting plate. A rotating shaft is rotatably installed in the movable rail cavity. The linkage gear is fixedly installed on the rotating shaft. A first Y - axis rack is slidably installed at the lower end of the movable rail cavity, and the first Y - axis rack meshes with the linkage gear. A support seat is fixedly connected to the bottom of the pipe bearing platform, and a rack groove is opened on the top of the support seat. The bottom end of the first Y - axis rack is slidably connected in the rack groove.

[0015] Preferably, the active force - applying component includes vertical slide holes and a second Y - axis rack. Two vertical slide holes are opened on the top of the pipe bearing platform, and the two vertical slide holes are symmetrically arranged with respect to the arc - shaped long groove. Second Y - axis racks are slidably installed in the two vertical slide holes, and the second Y - axis racks mesh with the linkage gear. The upper end of the second Y - axis rack extends outside the pipe bearing platform and is located below the bending reinforcement plate.

[0016] Preferably, the rope assembly includes a first locking ring, a mounting opening, a bracket, a guiding pulley, a second locking ring and an inelastic rope. On the separated sides of the two pipe clamping jaws, a first locking ring is fixedly connected respectively. A mounting opening is formed on the bending reinforcement plate, and a bracket is fixedly installed in the mounting opening. A guiding pulley is movably installed on the bracket. On both sides of the pipe bearing platform, a second locking ring is fixedly connected. A first locking ring is fixedly connected with an inelastic rope, and the other end of the inelastic rope passes through the guiding pulley and is fixedly connected to the second locking ring.

[0017] Preferably, the shortest distance value between the two bending reinforcement plates is larger than the diameter value of the concrete pipe body.

[0018] Preferably, on the mutually approaching sides of the two pipe clamping jaws, buffer pads are fixedly connected evenly and respectively.

[0019] In view of this, compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1). In this application, when hoisting the concrete pipe body, the servo motor works to drive the second bevel gear to rotate. Due to the meshing of the first bevel gear and the second bevel gear, it will drive the X-axis bidirectional lead screw to rotate, making the two pipe clamping jaws slide in the rectangular slide rail and move towards each other to complete the clamping action on the concrete pipe body. Then, the concrete pipe body is lifted or transferred by a hoisting device. The overall structure is compact and the layout is reasonable, reducing the occupied space.

[0021] (2). In this application, when clamping, the pipe bearing platform is lifted so that it can move upward relative to the lifting crossbeam. During the upward movement, the bending reinforcement plate will contact the second Y-axis rack and hinder its movement, while the pipe bearing platform will continue to move upward. During this period, the second Y-axis rack drives the linkage gear to rotate, making the first Y-axis rack drive the horizontal lifting plate to move upward, and the jacking plate jacks up the concrete pipe body upward. Thus, during the process of the pipe bearing platform driving the concrete pipe body to move upward, the jacking plate can jack the concrete pipe body out of the arc-shaped long groove, enabling the two pipe clamping jaws to clamp the concrete pipe body. Under the condition of ensuring safe lifting, the clamping action of the concrete pipe body is smoother.

[0022] (3). In this application, when the servo motor works, the two pipe clamping jaws will move towards each other, that is, the pipe clamping jaws will pull the pipe bearing platform through the inelastic rope, enabling the pipe bearing platform to move upward synchronously before the pipe clamping jaws complete clamping. The interlocking movement effect is better and it can prevent the concrete pipe from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure shows a schematic structural diagram of the clamping mechanism of the concrete pipe hoisting device provided by the present invention;

[0024] Figure 2 The following is a structural sectional view of the clamping mechanism of the concrete pipe lifting device provided by the present invention;

[0025] Figure 3 As shown Figure 2 is an enlarged schematic view of part A in

[0026] Figure 4 The following is a top view of the lifting crossbeam;

[0027] Figure 5 As shown Figure 2 is a partial structural schematic view of

[0028] Figure 6 As shown Figure 5 is an enlarged schematic view of part B in

[0029] Figure 7 As shown Figure 5 is a schematic view after the lifting plate moves upward in

[0030] Figure 8 As shown Figure 2 is an enlarged schematic view of part C in

[0031] Figure 9 The following is a three-dimensional view of the pipe clamping jaw.

[0032] Icon:

[0033] 1 - Lifting crossbeam; 101 - Rectangular slide rail; 102 - X-axis bidirectional lead screw; 103 - First bevel gear; 104 - Servo motor; 105 - Second bevel gear;

[0034] 2 - Pipe clamping jaw;

[0035] 3 - Bending reinforcement plate; 301 - First locking ring; 302 - Guide pulley; 303 - Second locking ring; 304 - Inelastic rope;

[0036] 4 - Pipe bearing platform; 401 - Lifting groove; 402 - Lifting plate; 403 - Horizontal lifting plate; 404 - Rotating shaft; 405 - Linkage gear; 406 - First Y-axis rack; 407 - Vertical sliding hole; 408 - Second Y-axis rack;

[0037] 5 - Concrete pipe body;

[0038] 6 - Support base. Specific implementation mode

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] Please refer to Figures 1-9 , the present invention provides the following specific embodiments:

[0041] Embodiment 1

[0042] A clamping mechanism of a concrete pipe lifting device includes a lifting cross beam 1 for installing on a lifting device. Two pipe clamping jaws 2 are slidably installed on the lifting cross beam 1, and the moving directions of the two pipe clamping jaws 2 are opposite. The lower ends of the two pipe clamping jaws 2 extend below the lifting cross beam 1 and are provided with semi-circular grooves. Both sides of the lifting cross beam 1 are fixedly connected with bending reinforcement plates 3, and the side of the bending reinforcement plate 3 away from the lifting cross beam 1 extends below the pipe clamping jaw 2;

[0043] A pipe bearing platform 4 has an arc-shaped long groove opened at the top, and a concrete pipe body 5 is placed in the arc-shaped long groove. A jacking groove 401 is opened at the bottom of the arc-shaped long groove, and two jacking plates 402 are slidably installed in the jacking groove 401. The tops of the two jacking plates 402 are in contact with the bottom of the concrete pipe body 5, and the bottom of the jacking plate 402 abuts against the bottom of the jacking groove 401;

[0044] A linear driving assembly is used to drive the movement of the two pipe clamping jaws 2, and the two pipe clamping jaws 2 are used to clamp the concrete pipe body 5;

[0045] A pipe lifting assembly is used to drive the jacking plate 402 to move in the jacking groove 401;

[0046] An active force application assembly is matched with the pipe lifting assembly and is located below the bending reinforcement plate 3;

[0047] A rope assembly is connected between the pipe clamping jaw 2 and the pipe bearing platform 4 for driving the lifting of the pipe bearing platform 4, and the rope assembly is respectively matched with the linear driving assembly and the active force application assembly.

[0048] Specifically, the linear driving assembly includes a rectangular slide rail 101, an X-axis bidirectional lead screw 102, and a driving mechanism. A rectangular slide rail 101 is provided on the lifting crossbeam 1. The X-axis bidirectional lead screw 102 is rotatably installed in the rectangular slide rail 101. Two pipe clamping jaws 2 are respectively threadedly installed on two parts of the X-axis bidirectional lead screw 102 with opposite thread directions, and both pipe clamping jaws 2 are slidably installed in the rectangular slide rail 101. The upper and lower ends of the pipe clamping jaws 2 extend out of the rectangular slide rail 101. The driving mechanism is used to drive the X-axis bidirectional lead screw 102 to rotate.

[0049] Specifically, the driving mechanism includes a transmission chamber, a first bevel gear 103, a servo motor 104, and a second bevel gear 105. The transmission chamber is provided in the lifting crossbeam 1. The right end of the X-axis bidirectional lead screw 102 extends into the transmission chamber, and a first bevel gear 103 is fixedly installed on the part of the X-axis bidirectional lead screw 102 located in the transmission chamber. The servo motor 104 is fixedly installed on the right side of the top of the lifting crossbeam 1, and the output end of the servo motor 104 extends into the transmission chamber and is fixedly connected to a second bevel gear 105. The second bevel gear 105 meshes with the first bevel gear 103.

[0050] Specifically, buffer pads are uniformly distributed and fixedly connected to the sides of the two pipe clamping jaws 2 that are close to each other.

[0051] In this embodiment: When hoisting the concrete pipe body, the servo motor works to drive the second bevel gear to rotate. Due to the meshing of the first bevel gear and the second bevel gear, it will drive the X-axis bidirectional lead screw to rotate, causing the two pipe clamping jaws to slide in the rectangular slide rail and move towards each other to close, so that the two pipe clamping jaws complete the clamping action on the concrete pipe body, and then the concrete pipe body is hoisted or transferred by the lifting device. The overall structure is compact, the layout is reasonable, and the occupied space is reduced.

[0052] Embodiment 2

[0053] The pipe lifting assembly includes a movable rail cavity, a horizontal lifting plate 403, a rotating shaft 404, a linkage gear 405, and a first Y-axis rack 406. Movable rail cavities are provided on both sides of the lifting groove. Horizontal lifting plates 403 are slidably installed in the two movable rail cavities, and the side surface of the horizontal lifting plate 403 is fixedly connected to the lifting plate. A rotating shaft 404 is rotatably installed in the movable rail cavity. A linkage gear 405 is fixedly installed on the rotating shaft 404. A first Y-axis rack 406 is slidably installed at the lower end of the movable rail cavity, and the first Y-axis rack 406 meshes with the linkage gear 405.

[0054] Specifically, a support base 6 is fixedly connected to the bottom of the pipe bearing platform 4. A rack groove is provided on the top of the support base 6. The bottom end of the first Y-axis rack 406 is slidably connected in the rack groove.

[0055] Specifically, the active force - applying component includes a vertical slide 407 and a second Y - axis rack 408. Two vertical slides 407 are provided at the top of the pipe - bearing platform 4, and the two vertical slides 407 are symmetrically arranged with respect to the arc - shaped long groove. A second Y - axis rack 408 is slidably installed in each of the two vertical slides 407, and the second Y - axis rack 408 meshes with the linkage gear 405. The upper end of the second Y - axis rack 408 extends outside the pipe - bearing platform 4 and is located below the bending reinforcement plate 3.

[0056] In this embodiment: Before clamping the concrete pipe body, it needs to be placed stably. At this time, the concrete pipe body can be placed in the arc - shaped long groove on the pipe - bearing platform, so that its center of gravity is biased towards the arc - shaped long groove, thereby avoiding slipping and improving safety.

[0057] When clamping, lift the pipe - bearing platform so that it can move upward relative to the lifting cross - beam. During the upward movement, the bending reinforcement plate will contact the second Y - axis rack and hinder its movement, while the pipe - bearing platform will continue to move upward. During this period, the second Y - axis rack drives the linkage gear to rotate, causing the first Y - axis rack to drive the horizontal lifting plate upward, and the jacking plate to jack up the concrete pipe body. Thus, during the process of the pipe - bearing platform driving the concrete pipe body to move upward, the jacking plate can jack the concrete pipe body out of the arc - shaped long groove, enabling the two pipe grippers to clamp the concrete pipe body, making the clamping action of the concrete pipe body smoother while ensuring safe lifting.

[0058] Embodiment Three

[0059] The rope assembly includes a first lock ring 301, an installation opening, a bracket, a guide pulley 302, a second lock ring 303, and a non - elastic rope 304. A first lock ring 301 is fixedly connected to the separated side of each of the two pipe grippers 2. An installation opening is provided on the bending reinforcement plate 3, and a bracket is fixedly installed in the installation opening. A guide pulley 302 is movably installed on the bracket. Second lock rings 303 are fixedly connected to both sides of the pipe - bearing platform 4. A non - elastic rope 304 is fixedly connected to the first lock ring 301, and the other end of the non - elastic rope 304 passes through the guide pulley 302 and is fixedly connected to the second lock ring 303.

[0060] Specifically, the minimum distance value between the two bending reinforcement plates 3 is larger than the diameter value of the concrete pipe body 5.

[0061] In this embodiment: When the servo - motor works, the two pipe grippers will move towards each other, that is, the pipe grippers will pull the pipe - bearing platform through the non - elastic rope, so that the pipe - bearing platform can move upward synchronously before the pipe grippers complete clamping, with a better interlocking movement effect and can achieve the purpose of preventing the concrete pipe from falling.

[0062] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0063] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A clamping mechanism for a concrete pipe lifting device, characterized in that: It comprises a lifting beam (1), on which two pipe clamps (2) are slidably mounted, and the two pipe clamps (2) move in opposite directions, the lower ends of the two pipe clamps (2) extend to below the lifting beam (1) and are provided with semicircular grooves, and both sides of the lifting beam (1) are fixedly connected with a bending reinforcement plate (3), and the bending reinforcement plate (3) extends to below the pipe clamps (2) on a side away from the lifting beam (1); A pipe support platform (4), wherein the top of the pipe support platform (4) is provided with an arc-shaped long groove, and a concrete pipe body (5) is placed in the arc-shaped long groove, and a jacking groove (401) is provided at the bottom of the arc-shaped long groove, and two jacking plates (402) are slidably installed in the jacking groove (401), and the tops of the two jacking plates (402) are in contact with the bottom of the concrete pipe body (5), and the bottoms of the jacking plates (402) are against the bottom of the jacking groove (401); A linear driving assembly, the linear driving assembly is used to drive two pipe clamping jaws (2) to move, and the two pipe clamping jaws (2) are used to clamp the concrete pipe body (5); A pipe lifting assembly, the pipe lifting assembly is used to drive the lifting plate (402) to move in the lifting groove (401); An active force-applying component, the active force-applying component cooperates with the pipe lifting component, and the active force-applying component is located below the bending reinforcement plate (3); A rope assembly is connected between the pipe clamp (2) and the pipe support platform (4) and is used to drive the pipe support platform (4) to rise and fall, and the rope assembly cooperates with the linear drive assembly and the active force application assembly respectively.

2. The clamping mechanism of a concrete pipe lifting device according to claim 1, characterized in that: The linear drive assembly comprises a rectangular slide rail (101), an X-axis bidirectional screw rod (102) and a drive mechanism. The lifting beam (1) is provided with a rectangular slide rail (101). The X-axis bidirectional screw rod (102) is rotatably mounted in the rectangular slide rail (101). The two pipe clamps (2) are respectively threadedly mounted on the X-axis bidirectional screw rod (102) at two positions with opposite thread rotation directions. The two pipe clamps (2) are both slidably mounted in the rectangular slide rail (101). The upper and lower ends of the pipe clamps (2) both extend out of the rectangular slide rail (101). The drive mechanism is used to drive the X-axis bidirectional screw rod (102) to rotate.

3. The clamping mechanism of a concrete pipe lifting device according to claim 2, characterized in that: The driving mechanism comprises a transmission bin, a first bevel gear (103), a servo motor (104) and a second bevel gear (105); the transmission bin is opened in the lifting beam (1); the right end of the X-axis bidirectional screw rod (102) extends into the transmission bin, and the portion of the X-axis bidirectional screw rod (102) located in the transmission bin is fixedly installed with the first bevel gear (103); the servo motor (104) is fixedly installed on the right side of the top of the lifting beam (1), and the output end of the servo motor (104) extends into the transmission bin and is fixedly connected with the second bevel gear (105); the second bevel gear (105) is meshed with the first bevel gear (103).

4. The clamping mechanism of a concrete pipe lifting device according to claim 3, characterized in that: The tube lifting assembly includes a movable rail cavity, a horizontal lifting plate (403), a rotating shaft (404), a linkage gear (405) and a No. 1 Y-axis rack (406). The lifting groove is provided with movable rail cavities on both sides. The two movable rail cavities are slidably installed with horizontal lifting plates (403), and the side surfaces of the horizontal lifting plates (403) are fixedly connected to the lifting plates. The movable rail cavity is rotatably installed with a rotating shaft (404), and the linkage gear (405) is fixedly installed on the rotating shaft (404). The lower end of the movable rail cavity is slidably installed with a No. 1 Y-axis rack (406), and the No. 1 Y-axis rack (406) is meshed with the linkage gear (405).

5. The clamping mechanism of a concrete pipe lifting device according to claim 4, characterized in that: The bottom of the tube support platform (4) is fixedly connected to a support seat (6), the top of the support seat (6) is provided with a rack groove, and the bottom end of the No. 1 Y-axis rack (406) is slidably connected in the rack groove.

6. The clamping mechanism of a concrete pipe lifting device according to claim 5, characterized in that: The active force-applying component comprises a vertical slide (407) and a second Y-axis rack (408). Two vertical slides (407) are provided on the top of the tube support platform (4), and the two vertical slides (407) are symmetrically arranged about the arc-shaped long groove. The second Y-axis rack (408) is slidably installed in the two vertical slides (407), and the second Y-axis rack (408) is meshed with the linkage gear (405). The upper end of the second Y-axis rack (408) extends to the outside of the tube support platform (4) and is located below the bending reinforcement plate (3).

7. The clamping mechanism of a concrete pipe lifting device according to claim 6, characterized in that: The rope assembly comprises a first locking ring (301), an installation opening, a bracket, a guide pulley (302), a second locking ring (303) and a non-elastic rope (304); the first locking ring (301) is fixedly connected to one side of the two pipe clamps (2) that are separated from each other; the bending reinforcement plate (3) is provided with an installation opening, and a bracket is fixedly installed in the installation opening; the guide pulley (302) is movably installed on the bracket; the second locking ring (303) is fixedly connected to both sides of the pipe support platform (4); the non-elastic rope (304) is fixedly connected to the first locking ring (301), and the other end of the non-elastic rope (304) passes through the guide pulley (302) and is fixedly connected to the second locking ring (303).

8. The clamping mechanism of a concrete pipe lifting device according to claim 1, characterized in that: The shortest distance between the two bending reinforcement plates (3) is greater than the diameter of the concrete pipe body (5).

9. The clamping mechanism of a concrete pipe lifting device according to claim 1, characterized in that: The two pipe clamping jaws (2) are fixedly connected to one side close to each other with evenly spaced buffer pads.

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