Clamping device for precast concrete

Abstract

The utility model relates to the technical field of clamping tools, in particular to a clamping device for a concrete prefabricated part. Comprising a mounting rod, a radial supporting module and an end face limiting module. The mounting rod is axially through and is provided with a radial supporting module and an end face limiting module in the axial direction; the radial supporting module is used for radially supporting a workpiece, and the radial size of the radial supporting module is adjustable; the radial supporting module is connected with the end face limiting module, and the end face limiting module is used for limiting the end face of the workpiece. The clamping device is used for solving the problem that a clamping device in the prior art cannot be suitable for hollow cylindrical concrete prefabricated parts with different radial sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping tooling, and specifically relates to a clamping device for concrete prefabricated components. Background Art

[0002] A clamping device is a widely used tool for firmly fixing and clamping various workpieces. With the continuous development of social technology, higher requirements are put forward for the performance and function of the clamping device.

[0003] In traditional clamping devices, there are often some limitations in the design and application of the clamping device. For example, for hollow cylindrical concrete prefabricated components, the clamping devices in the prior art are difficult to adapt to hollow cylindrical concrete prefabricated components with different radial dimensions. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a clamping device for concrete prefabricated components, which is used to solve the problem that the clamping device in the current technology cannot be applied to hollow cylindrical concrete prefabricated components with different radial dimensions.

[0005] To achieve the above object and other related objects, the present utility model provides a clamping device for concrete prefabricated components, including a mounting rod, a radial support module, and an end face limiting module;

[0006] The mounting rod is axially through, and the radial support module and the end face limiting module are respectively installed along the axial direction;

[0007] The radial support module radially supports the workpiece, and the radial dimension of the radial support module is adjustable;

[0008] The radial support module is connected to the end face limiting module, and the end face limiting module is used to limit the end face of the workpiece.

[0009] Optionally, the radial support module includes an activity groove, a sleeve, a guide rod, a first arm, a second arm, and a screw;

[0010] A plurality of the activity grooves are opened and circumferentially spaced on the mounting rod. The sleeve is threadedly connected with the screw. One end of the screw is provided with a second power member, and the second power member is fixedly connected inside the mounting rod and used to drive the screw to rotate. The guide rods, the first arms, and the second arms are correspondingly arranged and there are multiple. One ends of the multiple guide rods are respectively hinged to the outer peripheral surface of the sleeve, and the other ends are respectively hinged to the corresponding multiple first arms. The multiple first arms are respectively slidably connected to the corresponding multiple second arms, and the multiple second arms are fixedly connected to the outer peripheral surface of the mounting rod.

[0011] Optionally, the end face limiting module is used to limit the end faces of the hollow cylinders. There are at least two groups of the end face limiting modules. One group of the end face limiting modules includes a limiting member, a pulling rope, a torsion member, and a torsion seat. One end of the limiting member is hinged to the first arm, and the other end is connected to the pulling rope. A winding mechanism is provided at the end of the pulling rope away from the limiting member. The winding mechanism is located inside the mounting rod for tightening or releasing the pulling rope. The torsion seat is fixedly connected to the first arm, and the torsion member is sleeved on the torsion seat. The torsion of the torsion member causes the limiting member to twist from an inclined state to a horizontal state. Limiting seats are further provided on both sides of the torsion seat. The limiting seats are fixedly connected to the first arm. The limiting member can be limited by the limiting seats so that the limiting member is in a horizontal or inclined state respectively.

[0012] Optionally, the limiting member includes a first clamping member, a second clamping member, and a third clamping member. The first clamping member and the second clamping member are fixedly connected and perpendicular to each other to form an L shape. An elastic layer is provided on one side of the first clamping member for limiting the end face of the prefabricated part. The third clamping member and the second clamping member are telescopically connected and are driven by a third power member to telescopically move relative to each other. The fixed end of the third power member is fixedly connected to the third clamping member, and the telescopic end of the third power member is fixedly connected to the second clamping member. One end of the third clamping member away from the second clamping member is hinged to the first arm. A constraint mechanism is further provided near the hinged portion of the third clamping member on the first arm. The constraint mechanism can make the third clamping member be in a horizontal state or an inclined state respectively.

[0013] Optionally, the constraint mechanism includes a movable opening, a limiting protrusion, an electromagnet, a spring, a first limiting hole, and a second limiting hole;

[0014] The movable opening is formed in the third clamping member. The limiting protrusion is located in the movable opening and can telescopically move. The limiting protrusion rotates synchronously with the third clamping member around the hinged portion of the third clamping member and the first arm. A spring is provided between the limiting protrusion and the electromagnet. The elastic force of the spring causes the limiting protrusion to protrude. The electromagnet is fixedly connected to the third clamping member. When the electromagnet is energized, it adsorbs the limiting protrusion to overcome the elastic force of the spring and makes the limiting protrusion retract;

[0015] The limiting seat is provided with a first limiting hole and a second limiting hole. The limiting protrusion can be inserted into the first limiting hole or the second limiting hole;

[0016] When the limiting protrusion is inserted into the first limiting hole, the limiting member is in a horizontal state;

[0017] When the limiting protrusion is inserted into the second limiting hole, the limiting member is in an inclined state.

[0018] Optionally, the third power member is a telescopic electric cylinder or a hydraulic cylinder.

[0019] Optionally, a roller is rotatably installed at one end of the first arm away from the second arm.

[0020] Optionally, one end of the mounting rod located at the end face limiting module is frustum-shaped, and a plurality of isolating blocks are fixedly arranged on the small-diameter end face of the frustum-shaped mounting rod. The plurality of isolating blocks divide the end face of the small-diameter end of the frustum into a plurality of isolating holes for the pulling rope to pass through.

[0021] Optionally, the starting end and the ending end of the torsion member are perpendicular, and the starting end and the ending end are respectively in contact with the first arm and the third clamping member.

[0022] Optionally, after the pulling ropes on each of the limiting members pass through the respective isolating holes, they converge into one strand and are then connected to the winding mechanism.

[0023] As described above, the present utility model has the following beneficial effects:

[0024] This application can clamp concrete prefabricated parts of hollow cylinders with different inner diameters. During use, the mounting rod can be fixed to the wall surface, tabletop or the wall surface or top surface of other objects, and the concrete prefabricated parts with hollow cylinders can be sleeved on this application, which is convenient for further processing of the concrete prefabricated parts. Description of the Drawings

[0025] Figure 1 Shows the overall structural schematic diagram of the present utility model.

[0026] Figure 2 Shows the exploded structural schematic diagram of the radial support module and the end face limiting module of the present utility model.

[0027] Figure 3 Shows the semi-sectional structural schematic diagram of the present utility model.

[0028] Figure 4 Shows the overall structural schematic diagram of another direction of the present utility model (removing the pulling rope).

[0029] Element Number Description:

[0030] Mounting rod 3;

[0031] Radial support module 5, movable groove 51, sleeve 52, guide rod 53, first arm 54, second arm 55, screw rod 56;

[0032] End face limiting module 7, limiting member 71, pulling rope 72, torsion member 73, torsion seat 74, first clamping member 711, second clamping member 712, third clamping member 713, limit protrusion 7131, movable opening 7132, first limit hole 111, second limit hole 112;

[0033] Isolation block 10, limit seat 11, spring 12. Specific implementation mode

[0034] The following specific embodiments illustrate the implementation mode of the present invention. Those familiar with this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0035] Please refer to Figures 1 to 3 Note that the structures, proportions, sizes, etc. shown in the attached drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the implementation scope of the present invention. The change or adjustment of their relative relationship, without substantial change in technical content, should also be regarded as the implementable scope of the present invention.

[0036] The following embodiments are only for illustration. Combinations can be made between the various embodiments, and it is not limited to the content shown in the following single embodiment.

[0037] Please refer to Figures 1-3 , the present invention provides a clamping device for concrete precast members, including an installation rod 3, a radial support module 5 and an end face limiting module 7;

[0038] The installation rod 3 is axially penetrated, and the radial support module 5 and the end face limiting module 7 are respectively installed along the axial direction;

[0039] The radial support module 5 radially supports the workpiece, and the radial dimension of the radial support module 5 is adjustable;

[0040] The radial support module 5 is connected to the end face limiting module 7, and the end face limiting module 7 is used to limit the end face of the workpiece. This application can clamp concrete prefabricated parts with hollow cylinders of different inner diameters. When in use, the installation rod can be fixed to the wall surface, tabletop or the wall surface or top surface of other objects. The concrete prefabricated part with a hollow cylinder can be sleeved on this application, which is convenient for further processing of the concrete prefabricated part, such as grinding, painting, etc. There is no need to worry about the prefabricated part rolling or slipping, thus greatly improving the construction safety and efficiency. The clamping device can be fixed at different positions, and the construction personnel can also flexibly adjust the processing position of the prefabricated part according to actual needs to adapt to different construction environments and requirements. For example, when large prefabricated parts need to be processed, the clamping device can be fixed at a higher position so that the construction personnel can operate more conveniently.

[0041] In this embodiment, the radial support module 5 includes a movable groove 51, a sleeve 52, a guide rod 53, a first arm 54, a second arm 55 and a screw 56;

[0042] A plurality of the movable grooves 51 are opened and circumferentially spaced on the installation rod 3. The sleeve 52 is threadedly connected to the screw 56. One end of the screw 56 is provided with a second power member, and the second power member is fixedly connected to the installation rod 3 and is used to drive the screw 56 to rotate. The guide rods 53, the first arms 54 and the second arms 55 are correspondingly arranged and there are a plurality of them. One ends of the plurality of guide rods 53 are respectively hinged to the outer peripheral surface of the sleeve 52, and the other ends are respectively hinged to the corresponding plurality of first arms 54. The plurality of first arms 54 are respectively slidably connected to the corresponding plurality of second arms 55, and the plurality of second arms 55 are fixedly connected to the outer peripheral surface of the installation rod 3. In this embodiment, the second power member can be configured as a servo motor. The servo motor drives the screw 56 to rotate forward and backward, so that the sleeve 52 moves axially. The axial movement of the sleeve 52 drives the first arm 54 to extend or retract in the second arm 55, realizing the change of size. During installation, the installation rod 3 can be fixedly connected to the wall through expansion bolts and pads. The pads are provided to leave a gap between the wall and the installation rod 3 for the power cord of the servo motor to pass through.

[0043] In this embodiment, the end face limiting module 7 is used to limit the end faces of the hollow cylindrical concrete precast members. There are at least two groups of the end face limiting module 7. One group of the end face limiting module 7 includes a limiting member 71, a pulling rope 72, a torsion member 73 and a torsion seat 74. One end of the limiting member 71 is hinged to the first support arm 54, and the other end is connected to the pulling rope 72. A winding mechanism is provided at the end of the pulling rope 72 away from the limiting member 71. The winding mechanism is located in the mounting rod 3 for tightening or releasing the pulling rope 72. The torsion seat 74 is fixedly connected to the first support arm 54. The torsion seat 74 is sleeved with the torsion member 73. The torsion of the torsion member 73 causes the limiting member 71 to twist and change from an inclined state to a horizontal state. Limiting seats 11 are further provided on both sides of the torsion seat 74. The limiting seats 11 are fixedly connected to the first support arm 54. The limiting member 71 can be limited by the limiting seats 11 so that the limiting member 71 is respectively in a horizontal or inclined state. In this embodiment, as Figure 3 , the winding mechanism includes a winding shaft and a winding motor. The output shaft of the winding motor is the winding shaft. The winding motor is fixed in the mounting rod 3. A plurality of the pulling ropes 72 pass through one end of the mounting rod 3 away from the second support arm 55 and then converge into one strand and are fixedly connected to the winding shaft. The winding shaft winds the plurality of the pulling ropes 72 converged into one strand under the rotation of the winding motor. The winding motor can rotate forward and backward to tighten or loosen the pulling rope 72. In this embodiment, the length of the pulling rope 72 is sufficient to enable the first support arm 54 to perform telescopic movement relative to the second support arm 55. In this embodiment, the starting end and the ending end of the torsion member 73 are perpendicular, and the starting end and the ending end are respectively in contact with the first support arm 54 and the third clamping member 713.

[0044] In this embodiment, the limiting member 71 includes a first clamping member 711, a second clamping member 712 and a third clamping member 713. The first clamping member 711 and the second clamping member 712 are fixedly connected and perpendicular to each other to form an L shape. The first clamping member 711 is used to limit one side of the end face of the hollow cylindrical concrete precast member to be provided with an elastic layer. The third clamping member 713 and the second clamping member 712 are telescopically connected and driven by a third power member to telescopically move relative to each other. The fixed end of the third power member is fixedly connected to the third clamping member 713, and the telescopic end of the third power member is fixedly connected to the second clamping member 712. One end of the third clamping member 713 away from the second clamping member 712 is hinged to the first arm 54. A constraint mechanism is further provided near the hinge of the third clamping member 713 and the first arm 54. The constraint mechanism can make the third clamping member 713 be in a horizontal state or an inclined state respectively. In this embodiment, the telescopic connection between the third clamping member 713 and the second clamping member 712 can realize the adjustment of the axial length, and thus the pressing force on the end face of the target object can be adjusted according to actual needs. In this embodiment, the third power member can be configured as a telescopic electric cylinder or a hydraulic cylinder, and the telescopic movement of the third clamping member 713 and the second clamping member 712 is realized by controlling the telescopic movement of the telescopic electric cylinder or the hydraulic cylinder. In this embodiment, a pressure sensor is embedded in the elastic layer. When the electric telescopic cylinder or the hydraulic cylinder retracts to limit the end face of the hollow cylindrical concrete precast member, the pressure sensor detects the pressure change of the elastic layer. When the designed value is reached, the electric telescopic cylinder or the hydraulic cylinder stops retracting. This process can be detected and controlled by a control unit. The control unit can be selected as a single-chip microcomputer or a PLC control system. The single-chip microcomputer or the PLC control system is used to detect the value of the pressure sensor, and when the value of the pressure sensor reaches the set value, it drives the electric telescopic cylinder or the hydraulic cylinder to stop retracting. The relevant control programs can be realized by those skilled in the art through simple programming and will not be elaborated here.

[0045] In this embodiment, the constraint mechanism includes a movable opening 7132, a limiting protrusion 7131, an electromagnet, a spring 12, a first limiting hole 111 and a second limiting hole 112;

[0046] The movable opening 7132 is formed in the third clamping member 713. The limiting protrusion 7131 is located in the movable opening 7132 and can telescopically move. The limiting protrusion 7131 rotates synchronously with the third clamping member 713 around the hinge of the third clamping member 713 and the first arm 54. A spring 12 is provided between the limiting protrusion 7131 and the electromagnet. The elastic force of the spring 12 makes the limiting protrusion 7131 protrude. The electromagnet is fixedly connected to the third clamping member 713. When the electromagnet is energized, it adsorbs the limiting protrusion 7131 to overcome the elastic force of the spring 12 and makes the limiting protrusion 7131 retract;

[0047] The limiting seat 11 is provided with a first limiting hole 111 and a second limiting hole 112, and the limiting protrusion 7131 can be inserted into the first limiting hole 111 or the second limiting hole 112;

[0048] When the limiting protrusion 7131 is inserted into the first limiting hole 111, the limiting member 71 is in a horizontal state;

[0049] When the limiting protrusion 7131 is inserted into the second limiting hole 112, the limiting member 71 is in an inclined state. In this embodiment, the electromagnet can be controlled to be turned on and off by the same control unit. When energized, it generates magnetism and adsorbs the limiting protrusion 7131. The material of the limiting protrusion 7131 can be constructed as iron, so that the limiting protrusion 7131 contracts to the side of the third clamping member 713, thereby realizing the rotation of the third clamping member 713. After rotating the required angle, the electromagnet is powered off, and the limiting protrusion 7131 extends under the elastic force of the spring 12, so that the limiting protrusion 7131 is alternatively inserted into the first limiting hole 111 or the second limiting hole 112 to complete the limiting.

[0050] In this embodiment, a roller is rotatably installed at one end of the first arm 54 away from the second arm 55. By designing the roller, the resistance is reduced when installing or removing the hollow cylindrical concrete precast member, and the labor intensity of the operator is reduced.

[0051] In this embodiment, one end of the installation rod 3 located at the end face limiting module 7 is frustum-shaped, and a plurality of isolation blocks 10 are fixedly provided on the small-diameter end face of the frustum-shaped installation rod 3. The plurality of isolation blocks 10 divide the end face of the small-diameter end of the frustum into a plurality of isolation holes for the pull ropes 72 to pass through. By designing a plurality of independent isolation holes, the plurality of pull ropes 72 can move in the corresponding isolation holes, and can avoid winding around each other during use. One end of the installation rod 3 located at the end face limiting module 7 is designed to be frustum-shaped, which can provide more accommodation space for the limiting member 71 when it is in an inclined and folded state.

[0052] In this embodiment, after the pull ropes 72 on each limiting member 71 pass through the respective isolation holes, they converge into one strand and are then connected to the winding mechanism.

[0053] The working principle of the present utility model:

[0054] In the initial state, the radial dimension of the radial support module 5 is in the minimum state; the limiting member 71 is in an inclined state, the electromagnet is powered off, the limiting protrusion 7131 extends under the elastic force of the spring and is inserted into the second limiting hole 112, and the second clamping member 712 and the third clamping member 713 are in an extended state;

[0055] After the hollow cylindrical concrete precast member is sleeved in, adjust the radial dimension of the radial support module 5 to abut against the inner surface of the hollow cylindrical concrete precast member; use the end face limiting module 7 to limit the end face of the hollow cylindrical concrete precast member; specifically, in the initial state, the limiting member 71 is in an inclined state, and the limiting protrusion 7131 is located in the second limiting hole 112. Control the electromagnet to be energized, and the limiting protrusion 7131 retracts against the elastic force of the spring. At this time, the winding mechanism releases the pulling rope 72, and the pulling rope 72 is slowly released under the action of the torsion member 73. At the same time, the limiting member 71 rotates around the hinge. When it rotates to the horizontal position, control the electromagnet to be de-energized, and the limiting protrusion 7131 extends under the elastic force of the spring and inserts into the first limiting hole 111, so that the limiting member 71 is restricted to the horizontal state. Then control the third power member to retract, so that the first clamping member 711 abuts against the end face of the hollow cylindrical concrete precast member;

[0056] During unloading, control the third power member to extend, then control the electromagnet to be energized, the limiting protrusion 7131 retracts, the winding mechanism tightens the pulling rope 72, and after the pulling rope 72 is tightened, it overcomes the torsion member 73 to make the limiting member 71 rotate around the hinge from the horizontal state to the inclined state, and then the hollow cylindrical concrete precast member can be axially taken out.

[0057] The above embodiments only illustrate the principles and effects of the present invention by way of example, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A clamping device for a precast concrete part, characterized in that: It comprises a mounting rod (3), a radial support module (5) and an end surface limiting module (7); The mounting rod (3) is axially penetrated, and is respectively provided with a radial support module (5) and an end surface limiting module (7) along the axial direction; The radial support module (5) radially supports the workpiece, and the radial size of the radial support module (5) is adjustable; The radial support module (5) is connected to the end face limiting module (7), and the end face limiting module (7) is used to limit the end face of the workpiece.

2. A clamping device for precast concrete parts according to claim 1, characterized in that: The radial support module (5) comprises a movable groove (51), a sleeve (52), a guide rod (53), a first support arm (54), a second support arm (55) and a screw rod (56); A plurality of movable grooves (51) are provided and circumferentially spaced on the mounting rod (3); the sleeve (52) and the screw rod (56) are threadedly connected; a second power member is provided at one end of the screw rod (56); the second power member is fixedly connected to the mounting rod (3) and is used to drive the screw rod (56) to rotate; the guide rod (53), the first support arm (54) and the second support arm (55) are correspondingly arranged and a plurality of guide rods (53) are provided; one end of each of the guide rods (53) is hinged to the outer circumference of the sleeve (52); the other end of each of the guide rods (53) is hinged to the corresponding plurality of first support arms (54); the plurality of first support arms (54) are respectively slidably connected to the corresponding plurality of second support arms (55); and the plurality of second support arms (55) are fixedly connected to the outer circumference of the mounting rod (3).

3. A clamping device for precast concrete parts according to claim 1, characterized in that: The end surface limiting module (7) is used to limit the end surface of the hollow cylindrical concrete prefabricated component. The end surface limiting module (7) is provided with at least two groups, wherein one group of the end surface limiting modules (7) comprises a limiting member (71), a pull rope (72), a torque member (73) and a torque seat (74). One end of the limiting member (71) is hinged to the first support arm (54), and the other end is connected to the pull rope (72). The end of the pull rope (72) away from the limiting member (71) is provided with a winding mechanism, and the winding mechanism is located in the mounting rod (3) and is used for winding. The pull rope (72) is tightened or released, the torque seat (74) is fixedly connected to the first support arm (54), the torque seat (74) is sleeved with the torque member (73), the torque of the torque member (73) causes the limiting member (71) to be twisted and transformed from an inclined state to a horizontal state, and limiting seats (11) are also provided on both sides of the torque seat (74), the limiting seats (11) are fixedly connected to the first support arm (54), and the limiting member (71) can be limited by the limiting seats (11) so that the limiting member (71) is in a horizontal or inclined state respectively.

4. A clamping device for precast concrete parts according to claim 3, characterized in that: The limiting member (71) comprises a first clamping member (711), a second clamping member (712) and a third clamping member (713); the first clamping member (711) and the second clamping member (712) are fixedly connected and perpendicular to each other in an L-shape; a side of the first clamping member (711) used for limiting the end face of the preform is provided with an elastic layer; the third clamping member (713) and the second clamping member (712) are telescopically connected and driven by a third power member to telescope with each other; a fixed end of the third power member is fixedly connected to the third clamping member (713); a telescopic end of the third power member is fixedly connected to the second clamping member (712); an end of the third clamping member (713) away from the second clamping member (712) is hinged to the first support arm (54); a constraint mechanism is further provided on the third clamping member (713) near the hinge of the first support arm (54); the constraint mechanism can respectively place the third clamping member (713) in a horizontal state or an inclined state.

5. A clamping device for precast concrete parts according to claim 4, characterized in that: The restraining mechanism comprises a movable opening (7132), a limiting protrusion (7131), an electromagnet, a spring (12), a first limiting hole (111) and a second limiting hole (112); The movable opening (7132) is opened in the third clamping member (713); the limiting protrusion (7131) is located in the movable opening (7132) and is retractable and movable; the limiting protrusion (7131) rotates synchronously with the third clamping member (713) around the hinge between the third clamping member (713) and the first support arm (54); a spring (12) is provided between the limiting protrusion (7131) and the electromagnet; the elastic force of the spring (12) causes the limiting protrusion (7131) to extend; the electromagnet is fixed to the third clamping member (713); when the electromagnet is energized, it absorbs the limiting protrusion (7131) to overcome the elastic force of the spring (12) and causes the limiting protrusion (7131) to retract; The limiting seat (11) is provided with a first limiting hole (111) and a second limiting hole (112), and the limiting protrusion (7131) can be plugged into the first limiting hole (111) or the second limiting hole (112); When the limiting protrusion (7131) is inserted into the first limiting hole (111), the limiting member (71) is in a horizontal state; When the limiting protrusion (7131) is inserted into the second limiting hole (112), the limiting member (71) is in an inclined state.

6. A clamping device for precast concrete parts according to claim 4, characterized in that: The third power member is a telescopic electric cylinder or a hydraulic cylinder.

7. A clamping device for precast concrete parts according to claim 2, characterized in that: A roller is rotatably mounted on one end of the first support arm (54) away from the second support arm (55).

8. A clamping device for precast concrete parts according to claim 3, characterized in that: The mounting rod (3) is located at one end of the end surface limiting module (7) and is in the shape of a truncated cone. The truncated cone-shaped small-diameter end surface of the mounting rod (3) is also fixed with a plurality of isolation blocks (10). The plurality of isolation blocks (10) divide the end surface of the truncated cone small-diameter end into a plurality of isolation holes for the pull rope (72) to pass through.

9. A clamping device for precast concrete parts according to claim 5, characterized in that: The starting end and the ending end of the torsion member (73) are perpendicular, and the starting end and the ending end are respectively in contact with the first support arm (54) and the third clamping member (713).

10. A clamping device for precast concrete parts according to claim 8, characterized in that: After the pull rope (72) on each of the limiting members (71) passes through each of the isolation holes, it is gathered into one strand and then connected to the winding mechanism.

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