Electric pole hoisting clamp

Abstract

An electric pole hoisting clamp comprises a main machine frame and two sets of clamps arranged on the main machine frame and used for clamping an electric pole, the clamps are installed at the two ends of the main machine frame respectively, each clamp comprises a right gripper, a left gripper and a two-way hydraulic cylinder, and the top of the right gripper and the top of the left gripper are rotatably arranged on the two sides of the main machine frame through a supporting rotating shaft. Moving shafts are rotatably arranged at the tops of the right gripper and the left gripper, the two-way hydraulic cylinder is transversely arranged at the lower end of the hydraulic cylinder seat, the top of the hydraulic cylinder seat is fixedly arranged on the main rack, and the two ends of telescopic rods at the two ends of the two-way hydraulic cylinder are rotatably arranged on the moving shafts through lantern rings. The electric pole hoisting device can be self-locked, an electric pole is prevented from slipping off after being hoisted, and the electric pole hoisting device can be operated by only one person during working, so that the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pole lifting devices, in particular to an electric pole lifting clamp. Background Art

[0002] During the power construction process, electric poles are often encountered. Electric poles are an important part of the construction of power grids. Electric poles are placed horizontally after production or during storage or transportation. Electric poles also need to be hoisted at power line construction, maintenance and emergency repair construction sites. However, since the electric poles are very long and heavy, it is necessary to manually find the center of gravity of the electric poles during hoisting to prevent the electric poles from tilting or even sliding after lifting, which will not only damage the electric poles, but also threaten the safety of workers. At the same time, multiple people are required to operate together, which is a waste of manpower.

[0003] Chinese patent document CN213802563U discloses a cement pole lifting device, which has a reasonable and compact structure and is easy to use. By setting a left claw and a right claw, the utility model can hold the cement pole tightly when clamping it, avoiding the generation of transverse cracks when the cement pole is subjected to excessive horizontal stress, eliminating the step of tying the wire rope, improving the working efficiency, and reducing the safety risk. By setting a first lifting chain, the crane can be more flexible in the grasping process, and has strong applicability. However, the lifting device cannot solve the above problems, so the utility model proposes a pole lifting clamp with other structures. Utility Model Content

[0004] The utility model aims to provide a pole lifting clamp which can be self-locking to prevent the pole from slipping after lifting, and only one person is needed to operate it during work, thus reducing the labor cost.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A pole lifting fixture, comprising a main frame and a fixture arranged on the main frame for clamping the pole

[0007] As a preferred technical solution, the clamp has two groups, which are respectively installed at both ends of the main frame. The clamp includes a right gripper, a left gripper and a two-way hydraulic cylinder. The tops of the right gripper and the left gripper can be rotatably arranged on both sides of the main frame through a supporting shaft. The tops of the right gripper and the left gripper can be rotatably provided with a movable shaft. The two-way hydraulic cylinder is laterally arranged at the lower end of the hydraulic cylinder seat. The top of the hydraulic cylinder seat is fixedly arranged on the main frame. The two ends of the telescopic rods at both ends of the two-way hydraulic cylinder are rotatably arranged on the movable shaft through rings.

[0008] As an optimal technical solution, it also includes two groups of self-locking devices, which correspond to the two groups of clamps one by one; the self-locking device includes a fixed lock buckle, a movable lock hook, an elastic member, and a support rope, the fixed lock buckle is horizontally arranged on the inner wall of the left claw, the movable lock hook is hinged on the inner wall of the right claw, one end of the elastic member is fixedly connected to the movable lock hook, and the other end is fixedly connected to the inner wall of the right claw, the elastic member drives the movable lock hook to turn to the fixed lock buckle, one end of the support rope is fixedly connected to the movable lock hook, and the other end of the support rope is connected to the lifting and releasing structure to control the lifting and releasing of the support rope, and the fixed lock buckle is provided with a lock hole for the hook portion of the movable lock hook to pass through.

[0009] As a preferred technical solution, rubber pads are provided at the grooves of the right gripper and the left gripper.

[0010] As a preferred technical solution, the fixed lock buckle is provided with a plurality of lock holes matching the movable lock hooks.

[0011] As a preferred technical solution, an electric turntable is provided at the top center of the main frame, and a mounting piece is provided on the top of the electric turntable for connecting with a lifting device.

[0012] As a preferred technical solution, the self-locking device also includes a pulley assembly, which is divided into two groups, one group is fixed at the two ends of the top of the main frame, and the other group is arranged at the top edge of the electric turntable. The branch rope passes through the two groups of pulley assemblies and is connected to the main rope, and the main rope is wound around the wire wheel of the winch.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, by arranging clamps at both ends of the main frame, it is not necessary to manually find the center of gravity of the pole when clamping the pole, and the pole can be directly clamped, thereby reducing labor costs.

[0015] 2. In the utility model, a self-locking device is provided to lock the clamp after the clamp clamps the electric pole to prevent the electric pole from slipping, and a main rope and a branch rope are provided to control the movable locking hook, so that the person controlling the lifting equipment can also control the self-locking device at the same time, and no separate person is required to control it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the fixture structure of the utility model;

[0019] Figure 3This is a locking schematic diagram of the self-locking device of the utility model;

[0020] The reference numerals are as follows:

[0021] Main frame 1, clamp 2, self-locking device 3, right gripper 4, left gripper 5, rubber pad 6, bidirectional hydraulic cylinder 7, collar 8, movable shaft 9, supporting shaft 10, fixed lock buckle 11, movable lock hook 12, elastic member 13, support rope 14, pulley assembly 15, main rope 16, electric turntable 17, mounting part 18, hydraulic cylinder seat 19. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] Example

[0026] like Figure 1-2 As shown, a pole lifting fixture comprises a main frame 1, a fixture 2 and a self-locking device 3, wherein the fixture 2 corresponds to the self-locking device 3 one by one, and two groups are provided, which are respectively installed at the two ends of the main frame 1, the fixture 2 comprises a right gripper 4, a left gripper 5 and a bidirectional hydraulic cylinder 7, the tops of the right gripper 4 and the left gripper 5 are rotatably arranged on both sides of the main frame 1 through a supporting shaft 10, the tops of the right gripper 4 and the left gripper 5 are both rotatably provided with a moving shaft 9, the bidirectional hydraulic cylinder 7 is transversely arranged at the lower end of a hydraulic cylinder seat 19, the top of the hydraulic cylinder seat 19 is fixed on the main frame 1, and the two ends of the telescopic rods at both ends of the bidirectional hydraulic cylinder 7 are connected by a support shaft 10. The ring 8 can be rotatably set on the movable shaft 9; the self-locking device 3 includes a fixed lock buckle 11, a movable lock hook 12, an elastic member 13, a branch rope 14 and a main rope 16. The fixed lock buckle 11 is horizontally set on the upper part of the inner wall of the left gripper 5, and the movable lock hook 12 is hinged on the inner wall of the right gripper 4. One end of the elastic member 13 is fixedly connected to the movable lock hook 12, and the other end is fixedly connected to the inner wall of the right gripper 4. When the elastic member 13 is in a state of normal elasticity, it drives the movable lock hook 12 to apply pressure to the fixed lock buckle 11. One end of the branch rope 14 is fixedly connected to the movable lock hook 12, and the other end is fixedly connected to the main rope 16.

[0027] It is worth mentioning that by setting the clamps 2 at both ends of the main frame 1, it is convenient to clamp the pole. There is no need to manually find the center of gravity when clamping the pole. Generally speaking, the focus point of the clamp 2 is located in the middle area of ​​the pole. When the pole is clamped by two clamps 2 with a certain distance, it is also clamped in the middle area of ​​the pole. Therefore, the center of gravity will be roughly located between the two clamps 2, so there is no need to deliberately find the center of gravity manually.

[0028] The pole is clamped by the right gripper 4 and the left gripper 5, and the clamp 2 is supported by the support shaft 10. The clamp 2 can rotate around the support shaft. The telescopic rods at both ends of the two-way hydraulic cylinder 7 are respectively connected to the right gripper 4 and the left gripper 5 by the movable shaft 9. The opening and closing of the clamp 2 are controlled by the two-way hydraulic cylinder 7. The clamp 2 is self-locked by the self-locking device 3. After the clamp 2 clamps the pole, it is self-locked to reduce the possibility of the pole slipping. The movable lock hook 12 is turned to the fixed lock buckle 11 by the elastic member 13 to play a locking role. The movable lock hook 12 is controlled by the support rope 14 and the main rope 16, and the movable lock hook 12 can be turned away from the fixed lock buckle to be unlocked. When in use, first tighten the main rope 16, the main rope 16 drives the branch rope 14 to move up, so that the movable lock hook 12 turns away from the fixed lock buckle 11, and the self-locking device 3 is in an unlocked state, and then the telescopic rods at both ends of the two-way hydraulic cylinder 7 are controlled to shorten, so that the clamps 2 are opened, and both clamps 2 are aligned with the pole and lowered, and the telescopic rods at both ends of the two-way hydraulic cylinder 7 are controlled to extend, so that the clamps 2 are closed and the pole is clamped. At this time, the main rope 16 is loosened so that the movable lock hook 12 turns to the fixed lock buckle 11 under the action of the elastic member 13, and the self-locking device 3 is in a locked state, and the pole is not easy to slip.

[0029] In some feasible embodiments, rubber pads 6 are provided at the grooves of the right gripper 4 and the left gripper 5. The rubber pads 6 provide protection for both the pole and the clamp 2.

[0030] In some feasible embodiments, the fixed lock buckle 11 is provided with a plurality of strip-shaped lock holes which are arranged at intervals and match the movable lock hook 12. The plurality of lock holes are provided so that when clamping electric poles of different specifications, the right gripper 4 and the left gripper 5 are opened to different degrees, and the movable lock hook 12 can be hung in different lock holes to play a self-locking role. The movable lock hook 12 includes a lock hook body and a hook portion of a specific length.

[0031] Specifically, when the pole falls, the bottoms of the left and right grippers 5 and 4 open outward. At this time, since the movable locking hook 12 is hung in the locking hole, the left and right grippers 5 and 4 cannot open, so that the pole cannot fall. The length of the hook body ensures that when the bottom of the left gripper 5 is subjected to an outward force, the locking hole will not be separated from the hook.

[0032] In some feasible embodiments, the self-locking device further includes a pulley assembly 15, which is divided into two groups, a first group of pulleys fixedly arranged at both ends of the top of the main frame 1, and a second group of pulleys arranged at the top edge of the electric turntable 17. The first group of pulleys includes two pulleys corresponding to the two clamps 2 respectively, and the second group of pulleys also includes two pulleys corresponding to the two clamps 2 respectively.

[0033] The branch ropes 14 between any corresponding first and second pulley groups are horizontal. The branch ropes 14 pass through the two pulley assemblies 15 and are connected to the main rope 16. The pulley assemblies 15 are arranged to turn the branch ropes 14 so that the two branch ropes 14 can be connected to the main rope 16.

[0034] In some feasible embodiments, there are two branch ropes 14, which can simultaneously drive the two branch ropes 14 to move when the main rope 16 is lifted and lowered. The upward lifting of the branch rope 14 drives the rotation of the movable lock hook 12, so that the movable lock hook 12 is disengaged from the lock hole to complete the unlocking. The main rope 16 is wound on the winch, and the lifting and lowering of the main rope 16 is completed by the operation of the winch. The winch is set on the frame through the machine base.

[0035] In some feasible embodiments, similar to the prior art, an electric turntable 17 is provided at the top center of the main frame 1, and a mounting member 18 is provided at the top of the electric turntable 17 for connecting with a lifting device. The electric turntable 17 allows the clamp 2 to rotate after clamping the pole, such as turning the pole around or standing it up for easy installation, and the mounting member 18 allows the device to be connected with the lifting device.

[0036] In addition, it should be understood that although this specification is described in accordance with the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. So far, each embodiment of the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here. The scope of the present disclosure is defined by the attached claims.

Claims

1. A pole lifting fixture, comprising a main frame (1) and a fixture (2) arranged on the main frame (1) for clamping the pole, characterized in that: The clamp (2) has two groups, which are respectively installed at the two ends of the main frame (1). The clamp (2) comprises a right gripper (4), a left gripper (5) and a bidirectional hydraulic cylinder (7). The tops of the right gripper (4) and the left gripper (5) are rotatably arranged on both sides of the main frame (1) through a supporting shaft (10). The tops of the right gripper (4) and the left gripper (5) are rotatably provided with a movable shaft (9). The bidirectional hydraulic cylinder (7) is transversely arranged at the lower end of a hydraulic cylinder seat (19). The top of the hydraulic cylinder seat (19) is fixedly arranged on the main frame (1). The two ends of the telescopic rods at both ends of the bidirectional hydraulic cylinder (7) are rotatably arranged on the movable shaft (9) through a collar (8).

2. The pole lifting fixture according to claim 1, characterized in that: The invention also comprises two groups of self-locking devices (3), the two groups of self-locking devices (3) correspond to the two groups of clamps (2) one by one; the self-locking devices (3) comprise a fixed lock buckle (11), a movable lock hook (12), an elastic member (13), and a support rope (14); the fixed lock buckle (11) is horizontally arranged on the inner wall of the left gripping claw (5); the movable lock hook (12) is hinged on the inner wall of the right gripping claw (4); one end of the elastic member (13) is fixedly connected to the movable lock hook (12), and the other end is fixedly connected to the inner wall of the right gripping claw (4); the elastic member (13) drives the movable lock hook (12) to turn toward the fixed lock buckle (11); one end of the support rope (14) is fixedly connected to the movable lock hook (12), and the other end of the support rope (14) is connected to the lifting and lowering structure to control the lifting and lowering of the support rope (14); and a lock hole is provided on the fixed lock buckle (11) for the hook portion of the movable lock hook (12) to pass through.

3. The pole lifting fixture according to claim 1, characterized in that: The grooves of the right gripper (4) and the left gripper (5) are provided with rubber pads (6).

4. The pole lifting fixture according to claim 2, characterized in that: The fixed lock buckle (11) is provided with a plurality of lock holes matching the movable lock hooks (12).

5. The pole lifting fixture according to claim 1, characterized in that: An electric turntable (17) is provided at the center of the top of the main frame (1), and a mounting member (18) is provided at the top of the electric turntable (17) for connecting with a lifting device.

6. The pole lifting fixture according to claim 2, characterized in that: The self-locking device further comprises a pulley assembly (15), wherein the pulley assembly (15) is divided into two groups, one group being fixedly arranged at the two ends of the top of the main frame (1), and the other group being arranged at the top edge of the electric turntable (17); the branch rope (14) passes through the two groups of pulley assemblies (15) and is connected to the main rope (16); and the main rope (16) is wound around the wire wheel of the winch.

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