Safety tongs for traction elevator

Abstract

The utility model relates to the technical field of elevators, and discloses a traction elevator safety gear which comprises a safety gear body and wedge blocks arranged on the two sides of the interior of the safety gear body. According to the traction elevator safety tongs, through the arrangement of the heat dissipation assembly and the heat conduction silica gel, when the traction elevator safety tongs are used, the descending speed of an elevator car exceeds the speed set by a speed limiter, a wedge block moves upwards relative to the safety tongs, an elevator guide rail is locked, braking of the car is achieved, during high friction, the wedge block generates heat, the heat is transmitted to the heat conduction silica gel, and the heat conduction silica gel is cooled. The heat conduction silica gel fills a tiny gap between the wedge block and the copper plate, air isolation is eliminated, heat conduction efficiency is improved, heat is transmitted to the cooling fins on the copper plate, the surface area, making contact with external air, of the cooling fins is increased, and therefore the heat is rapidly transmitted and dissipated, and the situation that when the wedge block rubs against an elevator guide rail, the wedge block is not prone to falling off is avoided. A large amount of heat is generated, the service life of the wedge block is prolonged, and the reliability and safety of the safety tongs body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a traction elevator safety clamp. Background Art

[0002] The safety clamp is a safety protection device for elevators. The elevator safety clamp device is a safety device that stops the car and clamps it on the guide rail when the elevator speed exceeds the limit (or rated) speed set by the elevator speed limiter, or when the suspension rope breaks or loosens. It provides effective protection for the safe operation of the elevator and is generally installed on the car frame or counterweight frame.

[0003] When the existing traction elevator safety clamp is actually used, when the elevator safety clamp brakes the guide rail, there is generally grease on the guide rail. After braking, there may be a possibility that the clamp is not firmly clamped and falls again, which is not conducive to improving the safety of passengers.

[0004] After searching the existing patents: A traction elevator safety clamp (publication number: CN208980110U), the utility model relates to the technical field of elevator equipment, and in particular to a traction elevator safety clamp. It is arranged on both sides of the guide rails of the elevator, including a clamp body for clamping the guide rails to stop the movement of the guide rails and a control component for manipulating the clamp body. The guide rail sleeve is provided with a first mounting seat and a second mounting seat, one end of the clamp body is hinged to the first mounting seat, and the other end is slidably arranged on the second mounting seat; the control component includes an electromagnet arranged on the clamp body, and the electromagnet is connected to the power supply through a double-pole double-throw switch structure. The utility model is safe and stable in operation and has a good stopping effect.

[0005] Although the above patent achieves stopping by using an electromagnet, heat is generated when the wedge block and the guide rail rub against each other at high speed during use. If the heat is not dissipated in time, it is not easy to increase the service life of the wedge block.

[0006] Therefore, it is necessary to invent a traction elevator safety clamp to solve the above problems. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] The technical problem solved by the utility model is to provide a traction elevator safety clamp which is highly practical, can be simply operated and has a relatively simple structure. It solves the problem raised in the above background technology that heat is generated when the wedge block and the guide rail are rubbed at high speed during use, and the heat is not dissipated in time, which makes it difficult to increase the service life of the wedge block.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: a traction elevator safety clamp, comprising a safety clamp body and wedges arranged on both sides of the safety clamp body, both sides of the wedges are fixedly connected with thermal conductive silicone, a heat dissipation component is fixed on the surface of the thermal conductive silicone, mounting holes are provided around the top surface and the edge of the bottom surface of the safety clamp body, the internal thread of the mounting hole is connected with a mounting column, one end of the mounting column is fixedly connected with a connecting component, the surface of the mounting column is sleeved with a buffer component, the top end of the surface of the mounting column is threadedly connected with a locking component, the bottom end of the safety clamp body is fixedly connected with two support frames, the inner side wall of the support frame is fixedly connected with a pushing component, one side of the pushing component is fixedly connected with a cleaning block, and the edge of the inner side wall of the support frame is fixedly connected with a speed sensor.

[0011] As a further solution of the utility model, the heat dissipation component includes a copper plate fixedly connected to the surface of the thermally conductive silicone, and the surface of the copper plate is fixedly connected with heat dissipation fins, which are convenient for increasing the contact area with the air.

[0012] As a further solution of the utility model, the connecting assembly includes a compression spring fixedly connected to one end of the mounting column, and a connecting nut is overlapped on the top end of the compression spring, and the connecting nut is convenient for limiting.

[0013] As a further solution of the utility model, the buffer assembly includes a spring gasket sleeved on the surface of the mounting column, one side of the spring gasket is fixedly connected to a support spring, and the support spring has elastic force to reduce looseness of the mounting column.

[0014] As a further solution of the utility model, the locking assembly includes a lower nut threadedly connected to the top of the mounting column surface, the top of the lower nut is fixedly connected to a threaded ring, the surface of the threaded ring is threadedly connected to an upper nut, and the upper nut is easy to connect.

[0015] As a further solution of the utility model, the pushing assembly includes a hydraulic rod fixedly connected to the inner wall of the support frame, one end of the hydraulic rod is fixedly connected to a push plate, and the hydraulic rod is easy to extend.

[0016] As a further solution of the utility model, one side of one of the support frames is fixedly connected to a programmable logic controller, and one side of the programmable logic controller is electrically connected to a speed sensor and a hydraulic rod through a power line, so that the programmable logic controller is convenient for monitoring and issuing instructions.

[0017] (III) Beneficial effects

[0018] The utility model provides a traction elevator safety clamp, which has the following beneficial effects:

[0019] 1. The traction elevator safety clamp is provided with a heat dissipation component and thermally conductive silicone. When the elevator car descends at a speed exceeding the speed set by the speed limiter, the wedge moves upward relative to the safety clamp to lock the elevator guide rail, thereby achieving the braking of the car. During high friction, the wedge generates a large amount of heat, which is transferred to the thermally conductive silicone. The thermally conductive silicone fills the tiny gap between the wedge and the copper plate, eliminates air isolation, improves heat conduction efficiency, and transfers heat to the heat dissipation fins on the copper plate. The heat dissipation fins increase the surface area in contact with the external air, providing more heat dissipation surfaces, thereby achieving rapid heat transfer and dissipation, avoiding the wedge from generating a large amount of heat when rubbing against the elevator guide rail, thereby extending the service life of the wedge and increasing the reliability and safety of the safety clamp body.

[0020] 2. The traction elevator safety clamp is configured with a pushing component, a cleaning block, a speed sensor and a programmable logic controller. When in use, the speed sensor monitors whether the descending speed of the elevator car exceeds the speed of the speed limiter. If the speed is abnormal, the speed sensor sends a signal to the programmable logic controller while the safety clamp is moving. The programmable logic controller sends an operation instruction to the hydraulic rod. The hydraulic rod pushes the cleaning block against the surface of the elevator guide rail to wipe the stains and grease on the guide rail, thereby achieving the goal of preventing the stains and grease on the guide rail from making the wedge block loosely fixed and causing secondary braking while the safety clamp is braking, thereby improving the braking stability and the safety of passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the propulsion assembly of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the speed sensor of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the connection assembly of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the heat dissipation component of the utility model.

[0026] In the figure: 1. Safety clamp body; 2. Wedge; 3. Thermal conductive silicone; 4. Heat dissipation component; 401. Copper material plate; 402. Heat dissipation fin; 5. Mounting column; 6. Connecting component; 601. Compression spring; 602. Connecting nut; 7. Buffering component; 701. Spring gasket; 702. Support spring; 8. Locking component; 801. Lower nut; 802. Tooth ring; 803. Upper nut; 9. Support frame; 10. Pushing component; 1001. Hydraulic rod; 1002. Pushing plate; 11. Cleaning block; 12. Speed ​​sensor; 13. Programmable logic controller. DETAILED DESCRIPTION

[0027] 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. 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.

[0028] See also Figures 1 to 5 The utility model provides a technical solution: a traction elevator safety clamp, comprising a safety clamp body 1 and wedges 2 arranged on both sides of the safety clamp body 1, both sides of the wedge 2 are fixedly connected with heat-conducting silica gel 3, and the surface of the heat-conducting silica gel 3 is fixed with a heat dissipation component 4, through the arrangement of the heat dissipation component 4 and the heat-conducting silica gel 3, the heat is quickly transferred and dissipated, and a large amount of heat is avoided when the wedge 2 rubs against the elevator guide rail, thereby extending the service life of the wedge 2 and increasing the reliability and safety of the safety clamp body 1. The safety clamp body 1 has mounting holes around the top surface and the edge of the bottom surface, and the mounting holes are internally threaded with mounting columns 5, and one end of the mounting column 5 is fixed The mounting column 5 is fixedly connected with a connecting component 6, the surface of the mounting column 5 is sleeved with a buffer component 7, the top of the surface of the mounting column 5 is threadedly connected with a locking component 8, the bottom end of the safety clamp body 1 is fixedly connected with two support frames 9, the inner side wall of the support frame 9 is fixedly connected with a pushing component 10, one side of the pushing component 10 is fixedly connected with a cleaning block 11, and the edge of the inner side wall of the support frame 9 is fixedly connected with a speed sensor 12. By setting the pushing component 10, the cleaning block 11, the speed sensor 12 and the programmable logic controller 13, it is achieved that when the safety clamp is braked, the stains and grease on the guide rail are avoided, which makes the wedge block 2 not fixed firmly, causing secondary braking, thereby improving the braking stability and the safety of passengers;

[0029] The heat dissipation component 4 includes a copper material plate 401 fixedly connected to the surface of the thermally conductive silicone 3, and the surface of the copper material plate 401 is fixedly connected with a heat dissipation fin 402. The heat dissipation component 4 is arranged to accelerate the heat dissipation.

[0030] The connecting assembly 6 includes a compression spring 601 fixedly connected to one end of the mounting column 5, and a connecting nut 602 is overlapped on the top of the compression spring 601. The setting of the connecting assembly 6 plays a role in stabilizing the connection;

[0031] The buffer assembly 7 includes a spring washer 701 sleeved on the surface of the mounting column 5, and a support spring 702 is fixedly connected to one side of the spring washer 701. The buffer assembly 7 plays a buffering role.

[0032] The locking assembly 8 includes a lower nut 801 threadedly connected to the top of the surface of the mounting column 5, a tooth ring 802 is fixedly connected to the top of the lower nut 801, and an upper nut 803 is threadedly connected to the surface of the tooth ring 802. The setting of the locking assembly 8 plays a role in preventing the mounting column 5 from loosening;

[0033] The pushing assembly 10 includes a hydraulic rod 1001 fixedly connected to the inner wall of the support frame 9, and one end of the hydraulic rod 1001 is fixedly connected to a push plate 1002. Through the setting of the pushing assembly 10, the cleaning block 11 is pushed;

[0034] A programmable logic controller 13 is fixedly connected to one side of one of the support frames 9, and one side of the programmable logic controller 13 is electrically connected to the speed sensor 12 and the hydraulic rod 1001 through a power line. Through the setting of the programmable logic controller 13, it plays the role of monitoring signals and issuing operation instructions.

[0035] The working principle of the utility model is as follows: when in use, the safety clamp is connected to the bottom surface of the elevator car through the mounting column 5. When the compression spring 601, the spring washer 701 and the support spring 702 are impacted or the elevator is running, the spring washer 701, the compression spring 601 and the support spring 702 are compressed and deformed, and then elastic force is generated, which pushes the connecting nut 602, the upper nut 803 and the lower nut 801 in the opposite direction, increasing the close fit between each other, which will prevent the nuts from loosening. Again, the descending speed of the elevator car exceeds the speed set by the speed limiter, and the wedge block 2 moves upward relative to the safety clamp to lock the elevator guide rail to achieve the braking of the car. When high friction is performed, the wedge block 2 will generate a lot of heat, and the heat is transferred to the heat conduction Silicone gel 3, thermally conductive silicone gel 3 fills the tiny gap between the wedge block 2 and the copper plate 401, eliminates air isolation, improves heat conduction efficiency, and transfers heat to the heat dissipation fins 402 on the copper plate 401. The heat dissipation fins 402 increase the surface area in contact with the external air and provide more heat dissipation surfaces. When in use, the speed sensor 12 monitors the descending speed of the elevator car exceeding the speed of the speed limiter. When the speed is abnormal, while the safety clamp is moving, the speed sensor 12 sends a signal to the programmable logic controller 13, and the programmable logic controller 13 sends an operation instruction to the hydraulic rod 1001. The hydraulic rod 1001 pushes at the same time to press the cleaning block 11 against the surface of the elevator guide rail to wipe the stains and grease on the guide rail.

[0036] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0037] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traction elevator safety clamp, comprising a safety clamp body (1) and wedges (2) arranged on both sides of the safety clamp body (1), characterized in that: Both sides of the wedge block (2) are fixedly connected with heat-conducting silica gel (3), and a heat dissipation component (4) is fixedly connected to the surface of the heat-conducting silica gel (3). The top surface and the edge of the bottom surface of the safety clamp body (1) are provided with mounting holes. The inner thread of the mounting hole is connected with a mounting column (5), one end of the mounting column (5) is fixedly connected with a connecting component (6), the surface of the mounting column (5) is sleeved with a buffer component (7), and the top of the surface of the mounting column (5) is threadedly connected with a locking component (8). The bottom end of the safety clamp body (1) is fixedly connected with two support frames (9), the inner side wall of the support frame (9) is fixedly connected with a pushing component (10), one side of the pushing component (10) is fixedly connected with a cleaning block (11), and the edge of the inner side wall of the support frame (9) is fixedly connected with a speed sensor (12).

2. A traction elevator safety clamp according to claim 1, characterized in that: The heat dissipation component (4) comprises a copper material plate (401) fixedly connected to the surface of the thermally conductive silica gel (3), and heat dissipation fins (402) are fixedly connected to the surface of the copper material plate (401).

3. A traction elevator safety clamp according to claim 1, characterized in that: The connection assembly (6) comprises a compression spring (601) fixedly connected to one end of the mounting column (5), and a connection nut (602) is overlapped at the top end of the compression spring (601).

4. A traction elevator safety clamp according to claim 1, characterized in that: The buffer assembly (7) comprises a spring washer (701) sleeved on the surface of the mounting column (5), and a support spring (702) is fixedly connected to one side of the spring washer (701).

5. A traction elevator safety clamp according to claim 1, characterized in that: The locking assembly (8) comprises a lower nut (801) threadedly connected to the top of the surface of the mounting column (5), the top of the lower nut (801) is fixedly connected to a threaded ring (802), and the surface of the threaded ring (802) is threadedly connected to an upper nut (803).

6. A traction elevator safety clamp according to claim 1, characterized in that: The pushing assembly (10) comprises a hydraulic rod (1001) fixedly connected to the inner wall of the support frame (9), and one end of the hydraulic rod (1001) is fixedly connected to a pushing plate (1002).

7. A traction elevator safety clamp according to claim 1, characterized in that: One side of one of the support frames (9) is fixedly connected to a programmable logic controller (13), and one side of the programmable logic controller (13) is electrically connected to a speed sensor (12) and a hydraulic rod (1001) via a power line.

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