Locking device for actively clamping hoop

Abstract

The utility model provides a locking device of an active clamping hoop. The locking device of the active clamping hoop is used for tensioning and loosening two inner hoop steel belts to be connected. Comprising a hydraulic motor, a worm and gear speed reducer, a transmission lead screw, a first connecting box body and a second connecting box body. The worm and gear speed reducer is connected with the power output end of the hydraulic motor; the worm and gear speed reducer is mounted on the first connecting box body; one end of the transmission lead screw is connected with the worm gear in a key connection mode, and the other end of the transmission lead screw sequentially penetrates through the first connecting box body, the two to-be-connected inner hoop steel belts and the second connecting box body and then is connected to the two to-be-connected inner hoop steel belts in a fastened mode through anti-rotation nuts. The clamping force of the hoop can be accurately controlled, and damage to the surface of a bridge pier column can be effectively avoided in the using process of the hoop.

Description

Technical Field

[0001] This utility model relates to the field of bridge substructure construction technology, and in particular to a locking device for an active clamping clamp. Background Technology

[0002] With the advancement of science and technology and the acceleration of urbanization in my country, bridge construction has become increasingly important. Crawler machines are crucial components in bridge construction, capable of automating many complex and high-risk bridge construction tasks, significantly improving work efficiency, reducing the time and cost of manual operation, and lowering operational difficulty and risk.

[0003] The most common construction method for bridge pier pouring is the clamp method for cap beam construction. The clamps are used to clamp and release the bridge piers, enabling the crawler to move up and down.

[0004] The existing clamp locking device initially consisted of two semi-circular arc plates connected and locked together by bolts. This locking method requires high-altitude operation, which requires professional personnel to manually tighten the bolts on the top of the bridge pier. This operation poses safety hazards and is inefficient.

[0005] Later, a technology using automatic clamps for construction emerged. Automatic clamps typically employ a hydraulic cylinder and hydraulic lock in conjunction with locking components for tightening. However, this locking method poses significant risks due to the potential for internal leakage of the hydraulic oil. The hydraulic lock may become contaminated with the oil, and prolonged use could lead to increased internal leakage, or even the possibility of hydraulic lines bursting.

[0006] Recently, disc spring locking methods have emerged. For example, Chinese patent application CN111347096A discloses a locking method and a disc spring locking cylinder based on this method. However, its locking effect is poor, and the piston cylinder seal is prone to oil leakage. Another example is Chinese patent application CN202223075330.6, which discloses a crawler for a bridge pier climbing formwork construction system. This crawler uses a disc spring locking device, and the clamping method is passive clamping. The clamping force of the crawler varies with the diameter of the pier, resulting in inaccurate clamping. Yet another example is Chinese patent application CN202223056625.9, which discloses a climbing device and climbing system. This electric crawler uses a screw clamping device, which is an active clamping method driven by a motor. This results in a heavy weight and high cost. Utility Model Content

[0007] To address the aforementioned problems in the prior art, this utility model provides an active clamping locking device that employs active clamping and allows for precise control of the clamping force, effectively preventing damage to the surface of bridge piers during use.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a locking device for actively clamping a clamping band, the locking device for tightening and loosening two inner clamping band steel strips to be connected; comprising a hydraulic motor, a worm gear reducer, a transmission screw, a first connecting housing, and a second connecting housing; the worm gear reducer is connected to the power output end of the hydraulic motor; the worm gear reducer is mounted on the first connecting housing; one end of the transmission screw is connected to the worm gear via a key connection, and the other end passes sequentially through the first connecting housing, the two inner clamping bands to be connected, and the second connecting housing, and is then fastened to the two inner clamping bands to be connected by an anti-rotation nut.

[0009] In the preferred embodiment, the first connecting box, the two inner clamp steel belts to be connected, and the second connecting box are all provided with through holes, and the transmission screw passes through the through hole and is then fastened by an anti-rotation nut.

[0010] In a preferred embodiment, the outer surface of the anti-rotation nut is fitted with an anti-rotation clamping plate to prevent it from rotating together with the transmission screw, and the anti-rotation clamping plate is fastened to the connecting housing two by bolts.

[0011] In a preferred embodiment, the anti-rotation nut has two flat surfaces on both its upper and lower parts, and the anti-rotation clamping plate has a flat surface that abuts against the two flat surfaces of the anti-rotation nut. When the transmission screw rotates, the two abutting flat surfaces keep the transmission screw rotating in its original position, while the anti-rotation nut drives the connecting housing two to move left and right on the transmission screw through the anti-rotation clamping plate.

[0012] In a preferred embodiment, the two inner clamping steel strips to be connected include inner clamping steel strip one and inner clamping steel strip two; the end of inner clamping steel strip one is connected to a flange connecting block by a pin, and the end of the flange connecting block is provided with flange connecting lug one; the end of inner clamping steel strip two is provided with flange connecting lug two; both flange connecting lug one and flange connecting lug two have through holes one and two, and the locking device of the active clamping clamp passes through through holes one and through holes two to lock and release inner clamping steel strip one and inner clamping steel strip two.

[0013] In a preferred embodiment, the upper and lower parts of the flange connecting lug 1 and flange connecting lug 2 are provided with semi-circular mounting blocks. The upper and lower surfaces of the connecting housing 1 and connecting housing 2 are connected by hinge shafts in a hinged manner. The four hinge shafts are respectively fixed on the four semi-circular mounting blocks by four rotating shaft pressure blocks. Both the connecting housing 1 and connecting housing 2 can rotate around the corresponding double hinge shafts.

[0014] In a preferred embodiment, the second connecting box is a hollow box with one end open, and a disc spring is provided at the bottom of the inner part of the second connecting box, with a disc spring pressure plate provided outside the disc spring.

[0015] In a preferred embodiment, the interior of the second connecting housing is further equipped with a pressure sensor. One side of the pressure sensor abuts against the anti-rotation nut, and the other side is fixed to the disc spring pressure plate. When the anti-rotation nut moves toward the second connecting housing, the pressure sensor transmits the force to the disc spring, and then the disc spring transmits the force to the second connecting housing.

[0016] In a preferred embodiment, the end of the transmission screw is further provided with a limiting nut to prevent the anti-rotation nut from dislodging from the transmission screw when it moves.

[0017] In a preferred embodiment, the anti-rotation nut has a stepped surface at one end that abuts against the anti-rotation clamping plate, and a reverse baffle is provided outside the stepped surface. The reverse baffle and the anti-rotation clamping plate are fastened together by bolts.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model uses a screw nut to achieve active locking, and the locking force will not change due to slight changes in the diameter of the bridge pier, so the locking force can be precisely controlled;

[0020] 2. The locking device of this utility model adopts a screw locking method driven by a hydraulic motor, which can achieve precise clamping force control and obtain a larger opening gap, thus avoiding the inner clamp from rubbing against the pier column during use, making it safe and reliable.

[0021] 3. The locking device assembly of this utility model does not need to be disassembled, thus the locking device assembly is always a whole, which enhances the convenience of disassembly and assembly;

[0022] 4. The connecting housing of the locking device of this utility model is equipped with a disc spring and a pressure sensor. The pressure sensor can accurately measure the clamping force, which enhances the reliability of the equipment. The disc spring can effectively maintain the clamping force, which enhances the stability of the clamping force. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of an adjustable active clamping crawler that utilizes the locking device of this utility model;

[0024] Figure 2 A schematic diagram of the connection structure of the left and right halves of the ring assembly of an adjustable active clamping crawler using the locking device of this utility model;

[0025] Figure 3 A schematic diagram of the inner and outer double-layer structure of an active clamping hoop using the locking device of this utility model;

[0026] Figure 4An exploded view of the structure of an outer clamping hoop assembly for an active clamping clamp using the locking device of this utility model;

[0027] Figure 5 A structural schematic diagram of an external clamp assembly suitable for smaller diameter piers;

[0028] Figure 6 A structural schematic diagram of an external clamp assembly suitable for larger diameter piers;

[0029] Figure 7 A schematic diagram of the overall structure of the inner clamp assembly of the locking device of this utility model;

[0030] Figure 8 An exploded structural diagram of the inner clamp assembly of the locking device of this utility model;

[0031] Figure 9 This is a schematic diagram of the locking device assembly of the locking device of this utility model;

[0032] Figure 10 for Figure 9 Enlarged view of part A in the image;

[0033] Figure 11 This is an exploded view of the worm gear reducer of the locking device of this utility model;

[0034] Figure 12 This is a structural cross-sectional view of the locking device assembly of the locking device of this utility model;

[0035] Figure 13 This is a schematic diagram of the hinge connection of the locking device assembly of the locking device of this utility model;

[0036] Figure 14 This is a schematic diagram of the internal clamping steel belt structure;

[0037] Figure 15 This is a schematic diagram of the intermediate state during the locking process of the inner clamp assembly;

[0038] Figure 16 This is a schematic diagram showing the clamping state of the inner clamp assembly;

[0039] Figure 17 This is a schematic diagram showing the loosened state of the inner clamp assembly;

[0040] Figure 18 This is a cross-sectional view of the locking device assembly without a pressure sensor.

[0041] The diagram is marked as follows:

[0042] 1. Crawler assembly;

[0043] 1.1 Upper clamp; 1.2 Lower clamp; 1.3 Lifting cylinder;

[0044] 2. Piers;

[0045] 3. Semi-ring assembly;

[0046] 4. Pin;

[0047] 5. Tighten the bolts;

[0048] 6. External clamp assembly;

[0049] 6.1 Horizontal main frame; 6.2 Longitudinal connecting frame; 6.3 Guide wheel adjusting block; 6.4 Elastic guide wheel; 6.5 Longitudinal adjusting block; 6.1.1 Adjustable mounting hole;

[0050] 7. Inner clamp assembly;

[0051] 7.1 Locking device assembly; 7.2 Inner clamp steel band; 7.2.1 Through hole one; 7.2.2 Semicircular mounting block one; 7.3 Flange connecting block; 7.3.1 Through hole two; 7.3.2 Semicircular mounting block two; 7.1.1 Hydraulic motor; 7.1.2 Worm gear reducer; 7.1.3 Shaft pressure block one; 7.1.4 Connecting housing one; 7.1.5 Drive screw; 7.1.6 Connecting housing two; 7.1.7 Disc spring; 7.1.8 Shaft pressure block two; 7.1.9 Disc spring pressure plate; 7.1.10 Pressure sensor; 7.1.11 Anti-rotation nut; 7.1.12 Anti-rotation clip Plate; 7.1.13, Reverse baffle; 7.1.14, Limit nut; 7.1.15, Proximity switch; 7.1.16, Plane; 7.1.2.1, End cover one; 7.1.2.2, Oil seal one; 7.1.2.3, Lock nut; 7.1.2.4, Bearing one; 7.1.2.5, Worm gear; 7.1.2.6, Key; 7.1.2.7, Transmission box; 7.1.2.8, Bearing two; 7.1.2.9, Oil seal two; 7.1.2.10, End cover two; 7.1.2.11, Bearing three; 7.1.2.12, Worm; 7.1.4.1, Double hinge shaft one; 7.1.6.1, Double hinge shaft two. Detailed Implementation

[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0053] Example 1

[0054] Reference Figures 1 to 17The following is a further description of an adjustable active clamping crawler that uses an active clamping clamp locking device of the present invention.

[0055] like Figure 1 As shown, the crawler assembly 1 of an adjustable active clamping crawler using the active clamping locking device of this utility model mainly consists of an upper clamp 1.1, a lower clamp 1.2, and a lifting cylinder 1.3. Both the upper clamp 1.1 and the lower clamp 1.2 are active clamping clamps. One end of the lifting cylinder 1.3 is fixed to the upper clamp 1.1, and the other end is fixed to the lower clamp 1.2. There are two lifting cylinders 1.3, positioned opposite each other on the middle of the upper clamp 1.1 and the lower clamp 1.2. Each lifting cylinder 1.3 has a guide device on both sides, which is a guide rod and guide sleeve type. The end of the guide rod is fixed to the upper clamp 1.1, and the end of the guide sleeve is fixed to the lower clamp 1.2.

[0056] Under the guidance of the guiding device and the driving action of the lifting cylinder 1.3, the lifting cylinder 1.3 extends and retracts, driving the upper clamp 1.1 and the lower clamp 1.2 to crawl alternately. The upper clamp 1.1 and the lower clamp 1.2 alternately clamp the pier 2, so that the crawler assembly 1 can crawl along the surface of the pier 2.

[0057] Figure 2 As shown, the crawler assembly 1 consists of two semi-ring assemblies 3 connected by pins 4 and fastening bolts 5. Each semi-ring assembly 3 includes half of the upper clamp 1.1 and half of the lower clamp 1.2 structure, and is connected as a whole by a guide device and a lifting cylinder 1.3. During on-site disassembly, only the pins 4 and fastening bolts 5 need to be removed to quickly separate the crawler assembly into two halves and detach it from the pier.

[0058] like Figure 3 As shown, both the upper clamp 1.1 and the lower clamp 1.2 have a double-layer structure. Taking the upper clamp 1.1 as an example, the upper clamp 1.1 consists of an outer clamp assembly 6 and an inner clamp assembly 7. The inner clamp assembly 7 is embedded inside the outer clamp assembly 6. The advantage of the double-layer structure is that the clamping and loosening action of the inner clamp assembly 7 will not cause the load on the outer clamp assembly to shake, thus ensuring stable operation.

[0059] like Figure 4 , Figure 5 , Figure 6As shown, the external clamp assembly 6 is equipped with adjustable devices in the transverse, longitudinal, and diagonal directions to accommodate piers of different diameters. The external clamp assembly 6 consists of a transverse main frame 6.1, a longitudinal connecting frame 6.2, a guide wheel adjusting block 6.3, an elastic guide wheel 6.4, and a frame adjusting block 6.5. The two transverse main frames 6.1 are arranged opposite each other. The inner wall of each transverse main frame 6.1 has adjustable mounting holes 6.1.1. The longitudinal connecting frame 6.2 can be installed in different holes on the two transverse main frames 6.1, allowing adjustment of the two longitudinal connecting frames 6.2 in the transverse direction. The frame adjusting block 6.5 connects the two longitudinal connecting frames 6.2 in the longitudinal direction. Adjustment of the external clamp assembly in the longitudinal direction can be achieved by adding or removing frame adjusting blocks 6.5, and one or more frame adjusting blocks 6.5 can be used. Four elastic guide wheels 6.4 are installed on the inner wall of the longitudinal connecting frame 6.2, and the elastic guide wheels 6.4 are distributed at a 45° position. Depending on the diameter of the bridge pier, guide wheel adjustment blocks 6.3 may or may not be added between the elastic guide wheels 6.4 and the longitudinal connecting frame 6.2. The position can be adjusted by adding or removing guide wheel adjustment blocks 6.3, thereby realizing the adjustment of the outer clamp assembly 6 in the oblique direction.

[0060] By adjusting these three directions, the external clamp assembly 6 can be adapted to piers of different diameters, such as... Figure 5 and 6 As shown. With Figure 5 compared to, Figure 6 The longitudinal connecting frame 6.2 was moved outward, a frame adjustment block 6.5 was added, and a guide wheel adjustment block 6.3 was added, so that the outer clamp assembly 6 could adapt to piers with larger diameters.

[0061] like Figure 7 and Figure 8 As shown, the inner clamp assembly 7 mainly consists of a locking device assembly 7.1, an inner clamp steel strip 7.2, a flange connecting block 7.3, and a pin 4. Each inner clamp steel strip 7.2 and a flange connecting block 7.3 are connected by the pin 4 to form a semi-ring inner clamp. The two semi-ring clamps are driven by the two locking device assemblies 7.1 to clamp and release. The inner clamp assembly 7 can be separated into two halves by removing the pin 4, thus ensuring that the locking device assembly 7.1 remains a single unit, enhancing the ease of assembly and disassembly.

[0062] like Figure 9The locking device assembly 7.1 mainly consists of a hydraulic motor 7.1.1, a worm gear reducer 7.1.2, a rotating shaft pressure block 1 7.1.3, a connecting housing 1 7.1.4, a transmission lead screw 7.1.5, a connecting housing 2 7.1.6, a disc spring 7.1.7, a rotating shaft pressure block 2 7.1.8, a disc spring pressure plate 7.1.9, a pressure sensor 7.1.10, an anti-rotation nut 7.1.11, an anti-rotation clamping plate 7.1.12, a reverse baffle 7.1.13, a limit nut 7.1.14, and a proximity switch 7.1.15.

[0063] The structure of the worm gear reducer 7.1.2 is as follows: Figure 11 As shown, it mainly consists of end cover 7.1.2.1, oil seal 7.1.2.2, lock nut 7.1.2.3, bearing 7.1.2.4, worm gear 7.1.2.5, key 7.1.2.6, transmission box 7.1.2.7, bearing 7.1.2.8, oil seal 7.1.2.9, end cover 7.1.2.10, bearing 7.1.2.11, and worm gear 7.1.2.12. The worm gear drives the turbine to rotate in place, achieving a 90° staggered reduction and torque increase transmission.

[0064] The worm gear reducer 7.1.2 is connected to the power output end of the hydraulic motor 7.1.1; the worm gear reducer 7.1.2 is installed on the connecting housing 7.1.4; one end of the transmission screw 7.1.5 is connected to the worm gear 7.1.2.5 by a key connection, and the other end passes through the connecting housing 7.1.4, the inner clamp steel belt of one half-ring clamp, the connecting flange block 7.3 connected to the other half-ring clamp, and the connecting housing 7.1.6 in sequence, and is then fixed by the anti-rotation nut 7.1.11 sleeved on the outside of the transmission screw 7.1.5.

[0065] The outer surface of the anti-rotation nut 7.1.11 is fitted with an anti-rotation clamping plate 7.1.12 to prevent it from rotating together with the transmission screw 7.1.5. For example... Figure 10 As shown, the anti-rotation nut 7.1.11 has two flat surfaces 7.1.16 on both its upper and lower parts. The anti-rotation clamping plate 7.1.12 has flat surfaces 7.1.16 that abut against the two flat surfaces of the anti-rotation nut 7.1.11. When the transmission screw 7.1.5 rotates, the two abutting flat surfaces 7.1.16 keep the transmission screw 7.1.5 in its original position, while the anti-rotation nut 7.1.11 drives the connecting housing 7.1.6 to move left and right on the transmission screw 7.1.5 through the anti-rotation clamping plate 7.1.12.

[0066] The anti-rotation clamping plate 7.1.12 is also connected to a reverse baffle 7.1.13. The anti-rotation nut 7.1.11 has a stepped surface at one end that abuts against the anti-rotation clamping plate 7.1.12. The reverse baffle 7.1.13 is located on the outside of the stepped surface. The reverse baffle 7.1.13 and the anti-rotation clamping plate 7.1.12 are fastened together by bolts.

[0067] A proximity switch 7.1.15 is installed on the reverse baffle 7.1.13. When the clamp is fully opened, the proximity switch 7.1.15 can send a signal to the control system.

[0068] When the lead screw 7.1.5 rotates under the drive of the worm gear 7.1.2.5, the anti-rotation plate 7.1.12 can prevent the anti-rotation nut 7.1.11 from rotating with the lead screw 7.1.5, so that while the lead screw 7.1.5 rotates in place, it drives the anti-rotation nut 7.1.11 to move horizontally on the lead screw 7.1.5.

[0069] The lead screw 7.1.5 and the anti-rotation nut 7.1.11 can have trapezoidal threads, enabling mechanical self-locking and giving the locking device self-locking performance. Furthermore, the hydraulic motor 7.1.1 can integrate a brake, ensuring that the locking force of the locking device is reliably maintained.

[0070] The worm gear 7.1.2.12 is driven to rotate by the hydraulic motor 7.1.1. The worm gear 7.1.2.12 drives the turbine 7.1.2.5, which in turn drives the transmission screw 7.1.5 to rotate in place.

[0071] like Figure 13 and Figure 14 As shown, one end of one of the inner clamp steel strips 7.2 is provided with a flange connecting lug. The flange connecting lug is provided with a through hole 7.2.1. Semicircular mounting blocks 7.2.2 are provided at the top and bottom of the through hole 7.2.1.

[0072] like Figure 8 and Figure 13 As shown, the end of another inner clamp steel strip 7.2 is connected to a connecting flange block 7.3 via a pin 4. The end of the flange connecting block 7.3 is also provided with a flange connecting lug. The flange connecting lug has a through hole 7.3.1. The upper and lower parts of the through hole 7.3.1 are provided with semi-circular mounting blocks 7.3.2.

[0073] like Figure 8 , Figure 9 , Figure 13As shown, the upper and lower surfaces of the connecting box 7.1.4 are both hinged to a double hinge shaft 7.1.4.1. The double hinge shaft 7.1.4.1 is fixed to the semi-circular mounting block 7.2.2 of the inner clamping steel belt 7.2 by a rotating shaft pressure block 7.1.3. The connecting box 7.1.4 rotates around the double hinge shaft 7.1.4.1.

[0074] The upper and lower surfaces of the connecting housing 7.1.6 are both hinged to a double hinge shaft 7.1.6.1. The double hinge shaft 7.1.6.1 is fixed to the semi-circular mounting block 7.3.2 of the flange connecting block 7.3 by a rotating shaft pressure block 7.1.8. The connecting housing 7.1.6 can rotate around the double hinge shaft 7.1.6.1.

[0075] Both sides of the locking device's connecting housing can rotate around the four pivots, which can adapt to the angle changes caused by the deformation of the flange steel strip when the clamp is tightened, making the clamp more reliable.

[0076] The transmission screw 7.1.5 passes through the through hole 7.2.1 of the inner clamp steel belt 7.2 and the through hole 7.3.1 of the flange connecting block 7.3, connecting the two devices together.

[0077] like Figure 9 and Figure 12 As shown, a pressure sensor 7.1.10 is also installed on the right side of the anti-rotation nut 7.1.11. The pressure sensor 7.1.10 is fixed on the disc spring pressure plate 7.1.9. A disc spring 7.1.7 is located on the right side of the disc spring pressure plate 7.1.9. When the anti-rotation nut 7.1.11 moves to the right, the pressure sensor 7.1.10 transmits the force to the disc spring 7.1.7, which then transmits the force to the connecting housing 7.1.6. The connecting housing 7.1.6 transmits the force to the flange connecting block 7.3 through the double hinge shaft 7.1.6.1, thereby realizing the clamping action. The pressure sensor enables accurate measurement of the clamping force, enhancing the reliability of the equipment, while the disc spring enables effective maintenance of the clamping force, enhancing the stability of the clamping force.

[0078] A limit nut 7.1.14 can be installed at the end of the transmission screw 7.1.5 to limit the outward movement of the anti-rotation nut 7.1.11 and prevent the anti-rotation nut 7.1.11 from coming off the transmission screw 7.1.5.

[0079] like Figure 15 , Figure 16 , Figure 17The diagram shows the working state of the locking device assembly. In the initial state, the spacing between the flange connecting lugs is S1, and the initial spacing between the anti-rotation nut 7.1.11 and the limit nut 7.1.14 is H1. When clamping, the drive screw 7.1.5 rotates in place, driving the anti-rotation nut 7.1.11 to move to the right, pressing the disc spring 7.1.7, reducing the flange connecting lug spacing to S2, and increasing the distance between the two nuts from H1 to H2. When releasing, the drive screw 7.1.5 rotates in the opposite direction in place, driving the anti-rotation nut 7.1.11 to move to the left, which, through the reverse baffle 7.1.13, drives the connecting housing 7.1.6 to move to the left, increasing the flange connecting lug spacing to S3, while reducing the nut spacing to H3.

[0080] This screw and nut locking method achieves active locking, and the locking force will not change due to slight changes in the diameter of the pier. The locking force can be precisely controlled, and the opening gap is also relatively large, which can prevent the inner clamp from scratching the pier during the crawling process.

[0081] Example 2

[0082] As another implementation method, such as Figure 18 As shown, unlike Embodiment 1, the locking device assembly does not have a pressure sensor 7.1.10. The right side of the anti-rotation nut 7.1.11 is directly pressed against the disc spring 7.1.7 by the disc spring pressure plate 7.1.9, and then pressed against the connecting housing 7.1.6 by the disc spring.

[0083] In other embodiments, the inner clamp assembly of this utility model can be driven by two sets of locking device assemblies as described in Embodiment 1. Both sets can integrate pressure sensors, or only one pressure sensor can be integrated to reduce costs.

[0084] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A locking device for an active clamping clamp, the locking device for tightening and loosening two inner clamping steel strips to be connected; characterized in that: It includes a hydraulic motor, a worm gear reducer, a lead screw, a first connecting housing, and a second connecting housing; the worm gear reducer is connected to the power output end of the hydraulic motor; the worm gear reducer is mounted on the first connecting housing; one end of the lead screw is connected to the worm gear via a key connection, and the other end passes sequentially through the first connecting housing, two inner clamp steel belts to be connected, and the second connecting housing, and is then fastened to the two inner clamp steel belts to be connected by anti-rotation nuts.

2. The locking device for an active clamping hoop according to claim 1, characterized in that: The first connecting box, the two inner clamp steel belts to be connected, and the second connecting box are all provided with through holes. The transmission screw passes through the through hole and is then fastened by an anti-rotation nut.

3. The locking device for an active clamping hoop according to claim 2, characterized in that: The outer surface of the anti-rotation nut is fitted with an anti-rotation plate to prevent it from rotating together with the transmission screw. The anti-rotation plate is fastened to the connecting housing two by bolts.

4. The locking device for an active clamping hoop according to claim 3, characterized in that: The anti-rotation nut has two flat surfaces at both the top and bottom. The anti-rotation clamping plate has a flat surface that abuts against the two flat surfaces of the anti-rotation nut. When the transmission screw rotates, the two abutting flat surfaces keep the transmission screw rotating in its original position, while the anti-rotation nut drives the connecting box two to move left and right on the transmission screw through the anti-rotation clamping plate.

5. The locking device for an active clamping hoop according to claim 1, characterized in that: The two inner clamping steel strips to be connected include inner clamping steel strip one and inner clamping steel strip two; the end of inner clamping steel strip one is connected to a flange connecting block by a pin, and the end of the flange connecting block is provided with flange connecting lug one; the end of inner clamping steel strip two is provided with flange connecting lug two; both flange connecting lug one and flange connecting lug two are provided with through hole one and through hole two, and the locking device of the active clamping clamp is inserted through through hole one and through hole two to lock and release inner clamping steel strip one and inner clamping steel strip two.

6. The locking device for an active clamping hoop according to claim 5, characterized in that: Both flange connecting lug 1 and flange connecting lug 2 are provided with semi-circular mounting blocks at their upper and lower parts. The upper and lower surfaces of connecting housing 1 and connecting housing 2 are connected by hinge shafts in a hinged manner. The four hinge shafts are respectively fixed on the four semi-circular mounting blocks by four rotating shaft pressure blocks. Both connecting housing 1 and connecting housing 2 can rotate around the corresponding double hinge shafts.

7. The locking device for an active clamping hoop according to claim 5, characterized in that: The second connecting box is a hollow box with one end open. The bottom of the second connecting box is provided with a disc spring, and a disc spring pressure plate is provided outside the disc spring.

8. The locking device for an active clamping hoop according to claim 7, characterized in that: The second connecting housing is also equipped with a pressure sensor. One side of the pressure sensor abuts against the anti-rotation nut, and the other side is fixed to the disc spring pressure plate. When the anti-rotation nut moves toward the second connecting housing, the pressure sensor transmits the force to the disc spring, and then the disc spring transmits the force to the second connecting housing.

9. The locking device for an active clamping hoop according to claim 1, characterized in that: The end of the transmission screw is also provided with a limiting nut to prevent the anti-rotation nut from dislodging from the transmission screw when it moves.

10. The locking device for an active clamping hoop according to claim 3, characterized in that: The anti-rotation nut has a stepped surface at one end that abuts against the anti-rotation clamping plate, and a reverse baffle is provided outside the stepped surface. The reverse baffle and the anti-rotation clamping plate are fastened together by bolts.

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