Safety gear wedge block of explosion-proof elevator

Abstract

The utility model discloses an explosion-proof elevator safety gear wedge block which comprises an upper plate and a lower plate, a gear body is fixed between the upper plate and the lower plate, a guide groove for a guide rail to penetrate through is formed in the gear body, the two opposite sides of the guide groove are connected with a gear block and a pressing wheel assembly respectively in a sliding mode, and pull rods are fixed to the top of the gear block and the top of the pressing wheel assembly respectively. The top end of the pull rod is connected with a hinge seat in the lifting assembly, a first hinge column is arranged on the hinge seat and horizontally fixed to the center of the hinge seat, hinge rods are hinged to the first hinge column, and the ends, away from the first hinge column, of the hinge rods are hinged in a crossed mode through a second hinge column. The second hinge column is horizontally fixed to an I-shaped block of the guide assembly, and the I-shaped block is further fixedly connected with the telescopic end of the telescopic air cylinder. By means of the design, the two pull rods can operate at the same time, and the problem that elevator braking is unstable due to uneven stress is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the ladder equipment field, especially a kind of anti-explosion elevator safety tong wedge block. BACKGROUND

[0002] Safety tong is the safety protection device of elevator.Elevator safety tong device is under the operation of speed limiter, when the speed of elevator exceeds the limit (or rated) speed set by elevator speed limiter, or in the case of broken and slack of suspension rope, it is a kind of safety device that car is stopped and clamped on guide rail in emergency.It provides effective protection for the safe operation of elevator, and is generally installed on car frame or counterweight frame.Currently, the common safety tong pulling device mostly adopts single-rod single-axle rotating mechanism, which relies on speed limiter wire rope connecting piece to drive pulling rod when operating, and then lifts the wedge block in the safety tong of one side of elevator car.However, for the safety tong wedge block on the other side of car, it needs to rely on the additional pull rope on pulling rod to realize synchronous lifting.This design has a significant problem, that is, uneven force distribution, which may cause the wedge block on one side to be smoothly lifted, while the wedge block on the other side cannot be lifted or there is a delay in lifting, which undoubtedly increases the safety hazard.More seriously, under uneven force, the pull rope is easily broken due to bearing too much pressure, and then the wedge block in the safety tong cannot be effectively lifted, or the pull rope is broken before the wedge block is fully contacted with the guide rail, so that the safety tong cannot play its due braking effect, affecting the stability of the overall structure. SUMMARY

[0003] The utility model provides a kind of anti-explosion elevator safety tong wedge block, solve the problem of unstable pulling device in prior art and increase elevator emergency brake hidden danger and the problem of uneven force leading to pull rope breakage.

[0004] The technical solution of the utility model is as follows: a kind of anti-explosion elevator safety tong wedge block, comprising:

[0005] upper plate, lower plate, the upper plate is fixed with the tong body between lower plate, the tong body is equipped with the guide slot for guide rail to pass through, the guide slot opposite side is slidably connected with tong block and compression wheel assembly respectively, the top of tong block and compression wheel assembly top are all fixed with pull rod, the pull rod of two is connected with pulling assembly at the end away from tong body;

[0006] the pulling assembly includes the hinge seat fixedly connected with each pull rod, first hinge post is equipped on the hinge seat, the first hinge post is fixed in the center of hinge seat horizontally, the hinge rod is hingedly connected on the first hinge post of two, and the hinge rod of two is crossed and hingedly connected by second hinge post at the end away from first hinge post, the second hinge post is fixed on guide assembly horizontally;

[0007] The guide assembly comprises a I-shaped block fixedly connected with the second hinge column, guide rods are arranged on both sides of the I-shaped block and used for sliding the I-shaped block up and down, a base is fixedly connected with one end of the guide rod away from the I-shaped block, a telescopic cylinder is fixedly connected with the top of the base, a through hole is further arranged in the center of the base, the telescopic end of the telescopic cylinder passes through the through hole and is fixedly connected with the I-shaped block, and the telescopic cylinder is fixed with the body of the clamp through a fixing assembly.

[0008] Preferably, the opening of the guide groove is arranged towards the front, and a press wheel guide plate and a clamp block guide plate are screwed on both sides of the opening, the press wheel guide plate is provided with a first sliding groove which is inclined inwards from bottom to top, the first sliding groove is slidingly connected with the press wheel assembly, and the clamp block guide plate is provided with a second sliding groove which is inclined inwards from bottom to top, and the second sliding groove is slidingly connected with the clamp block.

[0009] Preferably, the press wheel assembly comprises a trapezoidal frame, a first press wheel and a second press wheel are rotatably connected in the trapezoidal frame, and the first press wheel is located above the second press wheel.

[0010] Preferably, the fixing assembly comprises a fixing sleeve ring sleeved with the telescopic cylinder, the fixing sleeve ring is fixed on a fixing support, and the fixing support is fixed on the body of the clamp.

[0011] Preferably, the length of the first sliding groove is 1.2-1.3 times the length of the second sliding groove.

[0012] Preferably, the outer diameter of the first press wheel is 0.8-0.9 times the outer diameter of the second press wheel.

[0013] Preferably, the surface of the diamond-shaped tooth on the face of the clamp block towards the press wheel assembly is provided with a spark-free coating.

[0014] Preferably, the spark-free coating is a beryllium bronze layer.

[0015] The utility model discloses the beneficial effect lies in:

[0016] 1, the utility model discloses a lifting assembly, guide assembly is set up under the action of telescopic cylinder and drives I-shaped block to move upwards, and then makes hinge rod drive clamp block and press wheel assembly move obliquely upwards along first sliding groove and second sliding groove, and the friction of clamp block and press wheel assembly and guide rail makes elevator car stop on guide rail, guarantees the safety of elevator operation, and simultaneously, the lifting assembly can act on two pull rods simultaneously, avoids the problem of unstable elevator braking due to uneven stress, in addition, the telescopic cylinder is combined with the speed governor, makes the lifting assembly directly connect with pull rod, saves this step of pull rope, avoids the problem of pull rope rupture due to bearing too large pressure.

[0017] 2, the utility model discloses a beryllium bronze material's no -spark coating is favorable to avoid the spark that safety tongs rub when braking produces, and further causes electrical explosion, adapts to the safety requirement of explosion -proof elevator. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic drawing of the utility model.

[0019] Figure 2 It is another angle structure schematic drawing of the utility model.

[0020] Figure 3 It is the structure schematic drawing of the utility model's clamp block.

[0021] Figure 4 It is the structure schematic drawing of the utility model's compression wheel subassembly.

[0022] In the drawing: 1, upper plate;2, lower plate;3, clamp body;4, guide groove;41, opening;5, clamp block;51, clamp block guide plate;511, second sliding groove;6, compression wheel subassembly;61, compression wheel guide plate;611, first sliding groove;62, trapezoidal frame;63, first compression wheel;64, second compression wheel;7, pull rod;8, lifting subassembly;81, hinged seat;82, first hinged column;83, hinged rod;84, second hinged column;9, guide subassembly;91, I-shaped block;92, guide rod;93, base;94, telescopic pneumatic cylinder;95, through -hole;10, fixed subassembly;101, fixed collar;102, fixed support. DETAILED DESCRIPTION

[0023] Combine the drawings Figure 1 Further illustrate the utility model discloses a kind of explosion-proof elevator safety tongs wedge block.

[0024] The utility model provides a kind of explosion-proof elevator safety tongs wedge block, comprising:

[0025] Upper plate 1, lower plate 2, the clamp body 3 is fixed between the upper plate 1 and lower plate 2, the clamp body 3 is equipped with the guide groove 4 for guide rail to pass through, the guide groove 4 opposite side is slidably connected with clamp block 5 and compression wheel subassembly 6 respectively, the clamp block 5 top and compression wheel subassembly 6 top are all fixed with pull rod 7, two the pull rod 7 is connected with lifting subassembly 8 away from clamp body 3 one end;

[0026] The lifting subassembly 8 includes the hinged seat 81 fixedly connected with each pull rod 7, two the first hinged column 82 is equipped on the hinged seat 81, the first hinged column 82 is fixed in the center of hinged seat 81 horizontally, two the hinged rod 83 is hinged on the first hinged column 82, and the second hinged column 84 is hingedly crossed with each other away from the first hinged column 82 one end of two the hinged rod 83, the second hinged column 84 is fixed on guide subassembly 9 horizontally;

[0027] The guiding assembly 9 comprises a I-shaped block 91 fixedly connected with the second hinge column 84, and guiding rods 92 are arranged on both sides of the I-shaped block 91 and slide up and down on the I-shaped block 91. A base 93 is fixedly connected to one end of the guiding rod 92 away from the I-shaped block 91, a telescopic cylinder 94 is fixedly connected to the top of the base 93, a through hole 95 is arranged in the center of the base 93, and the telescopic end of the telescopic cylinder 94 is fixedly connected to the I-shaped block 91 through the through hole 95. The telescopic cylinder 94 is fixed with the clamp body 3 through the fixing assembly 10.

[0028] Further, the opening 41 of the guiding groove 4 is arranged towards the front, and a pressure roller guiding plate 61 and a clamp block guiding plate 51 are screwed on both sides of the opening 41. The pressure roller guiding plate 61 is provided with a first sliding groove 611 inclined inward from bottom to top, and the first sliding groove 611 is slidably connected with the pressure roller assembly 6. The clamp block guiding plate 51 is provided with a second sliding groove 511 inclined inward from bottom to top, and the second sliding groove 511 is slidably connected with the clamp block 5.

[0029] Further, the pressure roller assembly 6 comprises a trapezoidal frame 62, and a first pressure roller 63 and a second pressure roller 64 are rotatably connected in the trapezoidal frame 62, and the first pressure roller 63 is located above the second pressure roller 64.

[0030] Further, the fixing assembly 10 comprises a fixing sleeve 101 sleeved with the telescopic cylinder 94, and the fixing sleeve 101 is fixed on a fixing support 102, and the fixing support 102 is fixed on the clamp body 3.

[0031] The length of the first sliding groove 611 is 1.2-1.3 times the length of the second sliding groove 511.

[0032] Further, the outer diameter of the first pressure roller 63 is 0.8-0.9 times the outer diameter of the second pressure roller 64.

[0033] Further, the surface of the clamp block 5 towards the pressure roller assembly 6 is provided with a rhombic tooth 52, and the surface of the rhombic tooth 52 is provided with a spark-free coating.

[0034] Further, the spark-free coating is a beryllium bronze layer.

[0035] The working principle of the utility model is: when the elevator runs downward, the overspeed governor will trigger the safety tongs action when the elevator falls and overspeeds (namely the elevator downward overspeed), at this moment the telescopic cylinder 94 runs and drives the telescopic end to rise, the I-shaped block 91 fixed on the telescopic end head rises, the articulated rod 83 articulated on the I-shaped block 91 also rises to make the pressure wheel assembly 6 and the tong block 5 move obliquely upward along the first sliding groove 611 and the second sliding groove 511, gradually eliminate the gap with the guide rail, until both are in contact with the guide rail and generate friction effect, stop the elevator car on the guide rail to protect the safety of the people or articles carried in the elevator.

[0036] The above only describes the preferred embodiment of the utility model, all other embodiments obtained by the ordinary skilled person in the art without creative labor should belong to the protection scope of the utility model.

Claims

1. An explosion-proof elevator safety gear wedge, characterized in that, Include: The upper plate (1), the lower plate (2), the upper plate (1) and the lower plate (2) are fixed with the clamp body (3), the clamp body (3) is provided with guide slot (4) for guide rail, the guide slot (4) is respectively connected with clamp block (5) and pressure wheel assembly (6) on opposite sides, the clamp block (5) top and pressure wheel assembly (6) top are fixed with pull rod (7), two the pull rod (7) is connected with pull assembly (8) away from the clamp body (3) one end; The pull assembly (8) includes the hinge seat (81) fixedly connected with each pull rod (7), the first hinge column (82) is arranged on the two hinge seats (81), the first hinge column (82) is horizontally fixed in the center of the hinge seat (81), the two first hinge columns (82) are hingedly connected with the hinge rod (83), and the two hinge rods (83) are hingedly connected with each other through the second hinge column (84) away from the first hinge column (82), the second hinge column (84) is horizontally fixed on the guide assembly (9); The guide assembly (9) includes the I-shaped block (91) fixedly connected with the second hinge column (84), the guide rod (92) is arranged on the two sides of the I-shaped block (91) for the up and down sliding of the I-shaped block (91), the base (93) is fixedly connected with the I-shaped block (91) away from the I-shaped block (91) one end, the top of the base (93) is fixedly connected with the telescopic cylinder (94), and the center of the base (93) is also provided with a through hole (95), the telescopic end of the telescopic cylinder (94) passes through the through hole (95) and is fixedly connected with the I-shaped block (91), and the telescopic cylinder (94) is fixed with the clamp body (3) through the fixing assembly (10).

2. The elevator safety gear wedge of claim 1, wherein: The opening (41) of the guide slot (4) is provided forward, and the pressure wheel guide plate (61) and the clamp block guide plate (51) are screwed on the two sides of the opening (41), the first sliding groove (611) inclined inward from bottom to top is arranged on the pressure wheel guide plate (61), the first sliding groove (611) is connected with the pressure wheel assembly (6), the second sliding groove (511) inclined inward from bottom to top is arranged on the clamp block guide plate (51), and the second sliding groove (511) is connected with the clamp block (5).

3. The elevator safety gear wedge of claim 1, wherein: The pressure wheel assembly (6) includes a trapezoidal frame (62), the first pressure wheel (63) and the second pressure wheel (64) are rotatably connected in the trapezoidal frame (62), and the first pressure wheel (63) is located above the second pressure wheel (64).

4. The elevator safety gear wedge of claim 1, wherein: The fixing assembly (10) includes a fixed sleeve ring (101) sleeved with the telescopic cylinder (94), the fixed sleeve ring (101) is fixed on the fixed support (102), and the fixed support (102) is fixed on the clamp body (3).

5. The elevator safety gear wedge of claim 2, wherein: The length of the first sliding groove (611) is 1.2-1.3 times the length of the second sliding groove (511).

6. The elevator safety gear wedge of claim 3, wherein: The outer diameter of the first pressure wheel (63) is 0.8-0.9 times the outer diameter of the second pressure wheel (64).

7. The elevator safety gear wedge of claim 1, wherein: The surface of the diamond tooth (52) is provided with a spark-free coating.

8. An explosion-proof elevator safety gear wedge according to claim 7, characterized in that: The spark-free coating is a beryllium bronze layer.

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