Elevator spring tensioning device

Abstract

The utility model discloses an elevator spring tensioning device, which relates to the technical field of elevator accessories, and comprises a mounting frame and a support frame, one side of the mounting frame is provided with a tightening assembly and a spring compression assembly, the tightening assembly comprises a fixing rod, a tightening wheel and a protection plate, the top of the protection plate is provided with a plurality of wire through grooves, the tightening wheel is sleeved on the fixing rod, and the spring compression assembly is arranged on the fixing rod. A plurality of mounting plates are fixedly mounted on the inner side of the supporting frame, each spring compression assembly comprises a guide shaft, an extrusion plate, a compression spring, a safety switch and a shifting rod, and the guide shafts are fixedly connected with the tops of the mounting plates; and under the condition that the balancing weight is not changed, the compression spring is pulled, and the compression spring has certain elasticity, so that the compression spring can buffer the steel wire rope, the steel wire rope can normally operate again in a short time when the steel wire rope is loosened, and the applicability of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator accessories, in particular to an elevator spring tensioning device. Background Art

[0002] The speed limiter is a safety component used to detect elevator overspeed. When the elevator is overspeeding, the speed limiter will operate and provide sufficient pulling force to trigger the safety clamp; the speed limiter's tensioning device is placed in the bottom pit of the shaft to apply a certain tension to the speed limiter wire rope to ensure that there is sufficient friction between the speed limiter wire rope and the speed limiter wheel, so that the speed limiter wheel rotation linear speed is consistent with the speed of the speed limiter wire rope running up and down.

[0003] Chinese patent CN218145211U discloses a tensioning device for an elevator, including a positioning shaft, one end of which is fixedly connected to a fixed frame; a swing arm, which is rotatably matched with the positioning shaft, one end of which is extended toward the direction of the speed limiter rope wheel, and the other end of which is extended toward the direction of the detection switch; a return spring, which is arranged between the positioning shaft and the swing arm and is used to keep the other end of the swing arm away from the detection switch.

[0004] The elevator spring tensioning device in the prior art can only work when the wire rope is loose or broken when there is a problem with the wire rope. When the wire rope is too tight, it can only be loosened by manually adjusting the counterweight. It has poor applicability and affects the normal use of the equipment, and has low safety performance. Utility Model Content

[0005] The utility model provides a low-temperature heat storage heat exchanger to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] The cam is an angular movement of the spring which is adapted to move the spring tensioner upwards and downs the spring tensioner to move the spring tensioner upwards and downs the spring tensioner to move the spring tensioner upwards and downs the spring tensioner to move the spring tensioner upwards and downs the spring tensioner to move the spring tensioner upwards.

[0008] Preferably, the tightening assembly further comprises a support rod and a counterweight block, the support rod is fixedly connected to the mounting frame, the counterweight block is fixedly sleeved on the support rod and has a plurality of slots on one side.

[0009] Preferably, the spring compression assembly also includes a nut, which is threadedly connected to the guide shaft and abuts against the extrusion plate. The mounting frame is arranged on the inner wall of the support frame and slidingly cooperates with the support frame. The extrusion plate is fixedly connected to the mounting frame.

[0010] Preferably, a slot is provided on one side of the support frame, the lever is rotatably connected to the safety switch, and the lever is disposed in the slot.

[0011] Preferably, a guide rail is disposed outside the support frame, and a base is fixedly mounted on the bottom of the guide rail.

[0012] Preferably, an adjustment slot is provided on one side of the mounting plate, a telescopic rod is fixedly connected to one end of the support frame, a matching plate is fixedly installed on one end of the telescopic rod, and the matching plate is fitted with one side of the base.

[0013] Preferably, the protective plate is fixedly connected to the top of the mounting frame, and the fixing rod is fixedly connected to the mounting frame.

[0014] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0015] 1. The utility model provides an elevator spring tensioning device. Through the cooperation between the mounting frame, the support frame, the extrusion rod, the mounting plate and the compression spring, the compression spring can buffer the take-up wheel to a certain extent when the wire rope is taut, so as to avoid the wire rope falling off due to the fast movement speed of the take-up wheel, thereby improving the service life of the wire rope and the safety performance of the equipment.

[0016] 2. The utility model provides an elevator spring tensioning device. Through the cooperation between the compression spring, the mounting frame and the tensioning wheel, when the wire rope is loose, the mounting frame can squeeze the lever, so that the lever closes the circuit of the safety switch, thereby cutting off the power of the elevator. Then, under the action of the compression spring, the mounting frame can be reset and used repeatedly, thereby optimizing operation and improving applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0020] Figure 4 It is a partial structural schematic diagram of the utility model;

[0021] Figure 5 It is a partial structural schematic diagram of the utility model.

[0022] In the figure: 1. mounting frame; 2. support frame; 201. notch; 3. tightening assembly; 301. fixing rod; 302. tightening wheel; 303. protective plate; 304. wire groove; 305. support rod; 306. counterweight; 307. slot; 4. spring compression assembly; 401. guide shaft; 402. extrusion plate; 403. compression spring; 404. safety switch; 405. lever; 406. nut; 5. mounting plate; 6. guide rail; 601. adjustment slot; 602. telescopic rod; 603. matching plate; 7. base. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods:

[0024] like Figure 1-5 As shown, the utility model provides an elevator spring tensioning device, including a mounting frame 1 and a support frame 2. A tightening assembly 3 and a spring compression assembly 4 are arranged on one side of the mounting frame 1. The tightening assembly 3 includes a fixing rod 301, a tightening wheel 302 and a protective plate 303. The top of the protective plate 303 is provided with a plurality of wire grooves 304. The tightening wheel 302 is sleeved on the fixing rod 301 and rotatably cooperates with the fixing rod 301. A plurality of mounting plates 5 are fixedly installed on the inner side of the support frame 2. The spring compression assembly 4 includes a guide shaft 401, an extrusion plate 402, and a plurality of wire grooves 304. 02, compression spring 403, safety switch 404 and lever 405, the guide shaft 401 is fixedly connected to the top of the mounting plate 5 and passes through the extrusion plate 402, the compression spring 403 is sleeved on the guide shaft 401, and the two ends are respectively connected to the guide shaft 401 and the extrusion plate 402, the safety switch 404 is fixedly installed on the outside of the support frame 2, and a lever 405 is provided on one side, when the mounting frame 1 moves vertically downward, it can squeeze the compression spring 403 and the lever 405, and the lever 405 rotates relative to the safety switch 404 after being squeezed.

[0025] When the elevator is normally ascending or descending, the wire rope can pass through the wire groove 304 and drive the take-up wheel 302 to rotate. When the wire rope is loose or broken, the take-up wheel 302 can move downward under the action of gravity, and at the same time, the take-up wheel 302 can drive the mounting frame 1 to move through the fixing rod 301. When the mounting frame 1 moves, it can drive a plurality of extrusion plates 402 to move. Since the extrusion plates 402 are connected to the compression springs 403, the plurality of extrusion plates 402 can compress the compression springs 403 when moving. After moving a certain distance, the mounting frame 1 can resist the lever 405 and exert a certain force on the lever 405. At the same time, the lever 405 is limited by the safety switch 404, so that the lever 405 can rotate at this time and send a signal to cut off the power to the safety switch 404, thereby stopping the power supply to the elevator, so that the elevator can be powered off immediately when the wire rope is damaged, thereby improving the safety performance of the equipment.

[0026] At this time, since a number of compression springs 403 can obtain a certain reaction force after being squeezed, when the gravity of the counterweight block 306 is applied to a certain force, the compression spring 403 can release the pressure, causing the mounting frame 1 to move in the opposite direction, and can quickly raise the position of the take-up wheel 302, so that the wire rope can be tightened again under the action of the compression spring 403, the speed limiting mechanism and the take-up wheel 302, thereby improving the ability of the wire rope to be straightened and tightened. When the wire rope is too tight, the compression spring 403 is pulled while the counterweight block 306 remains unchanged. Since the compression spring 403 has a certain elasticity, the compression spring 403 can buffer the wire rope, and can make the wire rope operate normally again in a short time after the wire rope is loosened, thereby improving the applicability of the equipment.

[0027] In one embodiment, the tightening assembly 3 further includes a support rod 305 and a counterweight 306 . The support rod 305 is fixedly connected to the mounting frame 1 . The counterweight 306 is fixedly sleeved on the support rod 305 and has a plurality of slots 307 on one side.

[0028] When it is necessary to move the counterweight block 306 from the ground, the staff can rotate the matching plate 603 to make the matching plate 603 in a vertical state, and then pull the support frame 2 upward through the matching plate 603 to move on the guide rail 6. By moving the support frame 2, the overall position of the mounting frame 1, the tightening assembly 3 and the spring compression assembly 4 can be moved. The operation is simple and the applicability is further improved.

[0029] In one embodiment, the spring compression assembly 4 also includes a nut 406, which is threadedly connected to the guide shaft 401 and abuts against the extrusion plate 402. The mounting frame 1 is arranged on the inner wall of the support frame 2 and slides with the support frame 2. The extrusion plate 402 is fixedly connected to the mounting frame 1.

[0030] The nut 406 is used to further limit the extrusion plate 402 so that the extrusion plate 402 can compress the compression spring 403 when moving, and at the same time, the length of the guide shaft 401 is reasonably used to make the structure more reasonable.

[0031] In one embodiment, a slot 201 is formed on one side of the support frame 2 , and a lever 405 is rotatably connected to a safety switch 404 , and the lever 405 is disposed in the slot 201 .

[0032] When the lever 405 is squeezed by the mounting bracket 1 , the lever 405 can rotate in the slot 201 under the effect of being limited. The slot 201 can provide a certain rotation space for the lever 405 , thereby reducing the probability of damage to the lever 405 and extending the service life of the device.

[0033] In one embodiment, a guide rail 6 is disposed outside the support frame 2 , and a base 7 is fixedly mounted on the bottom of the guide rail 6 .

[0034] The guide rail 6 is used to move the vertical height of the support frame 2, thereby adjusting the distance of the counterweight block 306 from the ground.

[0035] In one embodiment, an adjustment slot 601 is opened on one side of the mounting plate 5 , a telescopic rod 602 is fixedly connected to the support frame 2 , a matching plate 603 is fixedly installed on one end of the telescopic rod 602 , and the matching plate 603 is in contact with one side of the base 7 .

[0036] When the distance of the counterweight block 306 from the ground needs to be moved, the staff can stretch the matching plate 603, then pull the support frame 2 upward through the telescopic rod 602 to move on the guide rail 6, and then insert the matching plate 603 into one side of the guide rail 6, that is, by moving the support frame 2, the overall position of the mounting frame 1, the tightening assembly 3 and the spring compression assembly 4 is moved, which is easy to operate and further improves the applicability.

[0037] In one embodiment, the protection plate 303 is fixedly connected to the top of the mounting frame 1 , and the fixing rod 301 is fixedly connected to the mounting frame 1 .

[0038] The protective plate 303 can prevent the garbage in the elevator room from directly hitting the tightening wheel 302, thereby reducing the probability of the tightening wheel 302 being damaged and extending the service life of the equipment.

[0039] The working principle of the elevator spring tensioning device is described in detail below.

[0040] When the elevator is installed, the wire rope is sleeved on the take-up wheel 302 and the speed limiting mechanism. At the same time, a counterweight 306 of appropriate weight is selected according to the height of the floor and installed on the support rod 305, and the counterweight 306 is kept at a corresponding distance from the ground. When the elevator rises or falls normally, the wire rope can pass through the wire groove 304 and drive the take-up wheel 302 to rotate. When the wire rope is loose or broken, the take-up wheel 302 can move downward under the action of its own gravity under the action of the counterweight 306. At the same time, the take-up wheel 302 can drive the installation frame 1 to move through the fixing rod 301, and the installation frame 1 moves. When the plurality of extrusion plates 402 are moved, the extrusion plates 402 are connected to the compression springs 403, so that the plurality of extrusion plates 402 can compress the compression springs 403 when moving. After the mounting frame 1 moves a certain distance, it can resist the lever 405 and exert a certain force on the lever 405. At the same time, the lever 405 is limited by the safety switch 404, so that the lever 405 can rotate at this time and send a signal to cut off the power of the safety switch 404, thereby stopping the power supply to the elevator, so that the elevator can be powered off immediately when the wire rope is damaged, thereby improving the safety performance of the equipment;

[0041] Since at this time, a certain reaction force can be obtained after the compression springs 403 are squeezed, and then when the gravity of the counterweight block 306 is applied to a certain force, the compression spring 403 can release the pressure, so that the mounting frame 1 moves in the opposite direction, and the position of the take-up wheel 302 can be quickly raised, so that the wire rope can be tightened again under the action of the compression spring 403, the speed limiting mechanism and the take-up wheel 302, so that the wire rope can be straightened and tightened. When the wire rope is too tight, the compression spring 403 is pulled without changing the counterweight block 306. Since the compression spring 403 has a certain elasticity, the compression spring 403 can buffer the wire rope, and the wire rope can be made to operate normally again in a short time after the wire rope is loosened, thereby improving the applicability of the equipment.

[0042] When it is necessary to move the counterweight block 306 from the ground, the staff can stretch the matching plate 603, then pull the support frame 2 upward through the telescopic rod 602 to move on the guide rail 6, and then insert the matching plate 603 into one side of the guide rail 6, that is, by moving the support frame 2, the overall position of the mounting frame 1, the tightening assembly 3 and the spring compression assembly 4 is moved, which is easy to operate and further improves applicability.

[0043] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An elevator spring tensioning device, comprising a mounting frame (1) and a support frame (2), characterized in that: A tightening assembly (3) and a spring compression assembly (4) are provided on one side of the mounting frame (1); the tightening assembly (3) comprises a fixing rod (301), a tightening wheel (302) and a protective plate (303); a plurality of wire grooves (304) are provided on the top of the protective plate (303); the tightening wheel (302) is sleeved on the fixing rod (301) and rotatably cooperates with the fixing rod (301); a plurality of mounting plates (5) are fixedly installed on the inner side of the support frame (2); the spring compression assembly (4) comprises a guide shaft (401), an extrusion plate (402), a compression spring (403), a safety switch (404) and a dial The guide shaft (401) is fixedly connected to the top of the mounting plate (5) and passes through the extrusion plate (402); the compression spring (403) is sleeved on the guide shaft (401), and its two ends are respectively connected to the guide shaft (401) and the extrusion plate (402); the safety switch (404) is fixedly mounted on the outside of the support frame (2), and a lever (405) is provided on one side; when the mounting frame (1) moves vertically downward, it can squeeze the compression spring (403) and the lever (405); after the lever (405) is squeezed, it is equivalent to rotating the safety switch (404).

2. An elevator spring tensioning device according to claim 1, characterized in that: The tightening assembly (3) further comprises a support rod (305) and a counterweight (306); the support rod (305) is fixedly connected to the mounting frame (1); the counterweight (306) is fixedly sleeved on the support rod (305) and has a plurality of slots (307) formed on one side.

3. An elevator spring tensioning device according to claim 1, characterized in that: The spring compression assembly (4) further comprises a nut (406), wherein the nut (406) is threadedly connected to the guide shaft (401) and abuts against the extrusion plate (402); the mounting frame (1) is arranged on the inner wall of the support frame (2) and is slidably matched with the support frame (2); and the extrusion plate (402) is fixedly connected to the mounting frame (1).

4. An elevator spring tensioning device according to claim 1, characterized in that: A notch (201) is provided on one side of the support frame (2), the lever (405) is rotatably connected to the safety switch (404), and the lever (405) is arranged in the notch (201).

5. The elevator spring tensioning device according to claim 1, characterized in that: A guide rail (6) is arranged outside the support frame (2), and a base (7) is fixedly mounted on the bottom of the guide rail (6).

6. An elevator spring tensioning device according to claim 5, characterized in that: An adjustment slot (601) is provided on one side of the mounting plate (5); a telescopic rod (602) is fixedly connected to one end of the support frame (2); a matching plate (603) is fixedly mounted on one end of the telescopic rod (602); and the matching plate (603) is fitted to one side of the base (7).

7. An elevator spring tensioning device according to claim 1, characterized in that: The protective plate (303) is fixedly connected to the top of the mounting frame (1), and the fixing rod (301) is fixedly connected to the mounting frame (1).

Images