Elevator car bottom wheel mounting structure

Abstract

The utility model discloses an elevator car bottom wheel installation structure, and relates to the technical field of car bottom wheel installation, the elevator car bottom wheel installation structure comprises two connecting plates and a car bottom wheel, the two sides of the car bottom wheel are both rotatably connected with connecting rods, and the two connecting rods are respectively located below the two connecting plates. The fastening part comprises a U-shaped bolt clamped on the rod body of the connecting rod in a U shape and reinforcing assemblies arranged on the two sides of the U-shaped bolt and used for enhancing the clamping effect of the U-shaped bolt on the connecting rod, and the two ends of the connecting rod penetrate into the inner side of the connecting plate and are in threaded connection with nuts; through the arrangement of the reinforcing assembly, after the connecting rod and the connecting plate are fixedly connected through the U-shaped bolt and the nut, the positioning block is pressed through the extrusion piece, so that the positioning block is stressed to penetrate into the annular positioning groove, the firmness between the U-shaped bolt and the connecting plate can be improved, and even if the nut and the U-shaped bolt are loosened, the U-shaped bolt can not be loosened. And the U-shaped bolt can still keep stable, so that the clamping effect of the U-shaped bolt on the connecting rod is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of car bottom wheel installation, in particular to an elevator car bottom wheel installation structure. Background Art

[0002] Usually, the transportation tools for going up and down in buildings are collectively called elevators. According to the different operation modes, they are divided into handrail-type inclined elevators and car-type vertical lift elevators. Car-type vertical lift elevators can be divided into machine room part, hoistway and pit part, car part, floor station part, etc. according to the structure; according to the function, they can be divided into traction system, guide system, car, door system, weight balance system, electric traction system, electrical control system, safety protection system, etc.

[0003] In the prior art, U-bolts are generally used to fix the connecting rods on both sides of the car bottom wheels to the connecting plates at the bottom of the car. Although this method can ensure the fixing effect between the car bottom wheels and the connecting plates to a certain extent, from the actual use environment, the car will inevitably vibrate frequently during long-term lifting and lowering. As a result, the car bottom wheels arranged at the bottom of the car will resonate multiple times, causing the U-bolts and nuts in the U-bolts to loosen, affecting the firmness of the car bottom wheels at the bottom of the car. Utility Model Content

[0004] In order to solve the above technical problems, an elevator car bottom wheel installation structure is provided, which solves the problem in the prior art that the car will inevitably vibrate frequently during long-term lifting and lowering use, and the car bottom wheel configured at the bottom of the car will resonate multiple times, which will cause the U-shaped screw and the nut in the U-shaped bolt to loosen, affecting the firmness of the car bottom wheel at the bottom of the car.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: an elevator car bottom wheel installation structure, comprising two C-shaped and symmetrically distributed connecting plates and a car bottom wheel arranged between the two connecting plates, both sides of the car bottom wheel are rotatably connected with connecting rods, the two connecting rods are respectively located under the two connecting plates, and the connecting rods are fixedly connected to the connecting plates through fastening components;

[0006] The fastening component includes a U-shaped bolt clamped on the connecting rod body and a reinforcing assembly arranged on both sides of the U-shaped bolt for enhancing the clamping effect of the U-shaped bolt on the connecting rod. Both ends of the connecting rod are inserted into the inner side of the connecting plate and are threadedly connected with nuts.

[0007] The reinforcement component includes a locking seat with an open side fixed to the bottom surface of the connecting plate, the opening of the locking seat faces the U-shaped bolt, a positioning block is slidably arranged in the opening of the locking seat, and an annular positioning groove matching the positioning block is arranged around the outer walls on both sides of the U-shaped bolt, one end of the positioning block is inserted into the annular positioning groove, and a reset piece is arranged at the other end of the positioning block, and a pressure groove with a longitudinal section in the shape of a right-angled trapezoid is arranged in the inner wall of the positioning block, and an extrusion piece is arranged in the pressure groove.

[0008] Preferably, the reset member is a reset spring, and two ends of the reset spring are respectively fixedly connected to the positioning block and the innermost inner wall of the locking seat.

[0009] Preferably, the extrusion member includes a threaded sleeve fixedly embedded in the inner wall of the bottom end of the locking seat, a screw is threadedly connected in the inner side of the threaded sleeve, one end of the screw is inserted into the pressure groove and fixed with an extrusion block, and the other end of the screw is fixed with a torsion block.

[0010] Preferably, the extrusion block corresponds to the oblique inner wall of the pressure-bearing groove, and the oblique inner wall of the pressure-bearing groove faces the U-shaped bolt.

[0011] Preferably, a cutout is provided on the connecting rod, and the cutout is fitted with the bottom surface of the connecting plate.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] (1) By setting up the reinforcement component, after the U-bolt and nut are used to complete the fixed connection between the connecting rod and the connecting plate, the positioning block is pressed by the extrusion piece, so that the positioning block is forced to penetrate into the annular positioning groove, which can enhance the firmness between the U-bolt and the connecting plate. Therefore, even if the nut and the U-bolt are loose, the U-bolt can still remain stable, ensuring the clamping effect of the U-bolt on the connecting rod.

[0014] (2) By setting the extrusion block, the flexibility of the extrusion block can be utilized to reduce the degree of extrusion on the oblique inner wall of the pressure groove, so as to avoid serious wear of the oblique inner wall of the pressure groove and prevent long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the connecting rod and U-bolt of the utility model;

[0018] Figure 4This is a schematic diagram of the internal structure of the positioning block of the utility model.

[0019] The numbers in the figure are:

[0020] 1. Connecting plate; 2. Car bottom wheel; 3. Connecting rod; 4. U-bolt; 5. Nut; 6. Locking seat; 7. Positioning block; 8. Annular positioning groove; 9. Reset spring; 10. Pressure groove; 11. Threaded sleeve; 12. Screw; 13. Extrusion block; 14. Torsion block; 15. Incision. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] Reference Figure 1-4 As shown, an elevator car bottom wheel installation structure comprises two C-shaped and symmetrically distributed connecting plates 1 and a car bottom wheel 2 arranged between the two connecting plates 1, both sides of the car bottom wheel 2 are rotatably connected with connecting rods 3, the two connecting rods 3 are respectively located under the two connecting plates 1, and the connecting rods 3 are fixedly connected to the connecting plates 1 through fastening components;

[0023] The fastening component includes a U-shaped bolt 4 which is clamped on the rod body of the connecting rod 3 in a U-shaped shape. Both ends of the connecting rod 3 are inserted into the inner side of the connecting plate 1 and are threadedly connected with nuts 5.

[0024] When in use, the car bottom wheel 2 is connected to the car through the two connecting plates 1, the top of the connecting plate 1 is fixedly connected to the bottom of the car, the connecting rod 3 is clamped with a U-bolt 4, and the end of the U-bolt 4 is inserted into the inner side of the connecting plate 1, and then the nut 5 is threaded into the end of the U-bolt 4, so that the nut 5 is in close contact with the inner wall of the bottom end of the connecting plate 1, so that the nut 5 cooperates with the U-bolt 4 to effectively lock the connecting rod 3, thereby ensuring the connection relationship between the car bottom wheel 2 and the car.

[0025] However, in reality, the car will inevitably vibrate during long-term lifting and lowering, and the car bottom wheel 2 configured at the bottom of the car will resonate multiple times, causing the U-bolt 4 and the nut 5 to loosen, affecting the firmness of the car bottom wheel 2 at the bottom of the car;

[0026] For this purpose, refer to Figure 2-4 As shown, it is worth noting that it also includes reinforcement components arranged on both sides of the U-bolt 4 for enhancing the clamping effect of the U-bolt 4 on the connecting rod 3;

[0027] The reinforcement component includes a locking seat 6 with an open side fixed on the bottom surface of the connecting plate 1, the open side of the locking seat 6 faces the U-shaped bolt 4, a positioning block 7 is slidably arranged in the open side of the locking seat 6, and an annular positioning groove 8 adapted to the positioning block 7 is arranged around the outer wall on both sides of the U-shaped bolt 4, one end of the positioning block 7 is inserted into the annular positioning groove 8, and the other end of the positioning block 7 is provided with a reset member, and a pressure groove 10 with a longitudinal section in the shape of a right-angled trapezoid is provided in the inner wall of the positioning block 7, and an extrusion member is provided in the pressure groove 10;

[0028] By setting up the reinforcement component, after the U-bolt 4 and the nut 5 are used to complete the fixed connection between the connecting rod 3 and the connecting plate 1, the positioning block 7 is pressed by the extrusion piece, so that the positioning block 7 is forced to penetrate into the annular positioning groove 8, which can enhance the firmness between the U-bolt 4 and the connecting plate 1. Therefore, even if the nut 5 and the U-bolt 4 are loose, the U-bolt 4 can still remain stable, ensuring the clamping effect of the U-bolt 4 on the connecting rod 3.

[0029] Further, refer to Figure 4 As shown, the reset member is a reset spring 9, and the two ends of the reset spring 9 are fixedly connected to the inner wall of the innermost side of the positioning block 7 and the locking seat 6 respectively;

[0030] The extrusion member includes a threaded sleeve 11 fixedly embedded in the inner wall of the bottom end of the locking seat 6, a screw 12 is threadedly connected to the inner side of the threaded sleeve 11, one end of the screw 12 penetrates into the pressure groove 10 and is fixed with an extrusion block 13, and the other end of the screw 12 is fixed with a torsion block 14;

[0031] The extrusion block 13 corresponds to the oblique inner wall of the pressure groove 10, and the oblique inner wall of the pressure groove 10 faces the U-bolt 4;

[0032] By setting the reset member and the extrusion member, the simple knob torsion block 14 and the screw 12 can penetrate into the pressure groove 10 under the threaded structure, and the extrusion block 13 can continuously squeeze the pressure groove 10 obliquely toward the inner wall, so that the positioning block 7 can be squeezed to penetrate into the inner side of the annular positioning groove 8 and stretch the reset spring 9 to deform. In this way, the elastic force of the reset spring 9 is used to reverse the knob torsion block 14, so that the screw 12 gradually withdraws from the inner side of the pressure groove 10 under the threaded structure, and when the extrusion on the positioning block 7 is reduced, the positioning block 7 can withdraw from the inside of the annular positioning groove 8 under the elastic force of the reset spring 9, thereby releasing the reinforcement effect on the U-bolt 4;

[0033] Furthermore, by disposing the extrusion block 13 , the flexibility of the extrusion block 13 can be utilized to reduce the degree of extrusion on the oblique inner wall of the pressure groove 10 , so as to avoid serious wear of the oblique inner wall of the pressure groove 10 and prevent long-term use.

[0034] Further, refer to Figure 3As shown, a cutout 15 is provided on the connecting rod 3, and the inner wall at the bottom end of the cutout 15 is in contact with the bottom surface of the connecting plate 1;

[0035] The connection rod 3 can be made to contact the connection plate 1 more stably, thereby preventing the connection rod 3 from rotating.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An elevator car bottom wheel mounting structure, characterized in that: The invention comprises two C-shaped and symmetrically distributed connecting plates (1) and a car bottom wheel (2) arranged between the two connecting plates (1), both sides of the car bottom wheel (2) are rotatably connected with connecting rods (3), the two connecting rods (3) are respectively located below the two connecting plates (1), and the connecting rods (3) are fixedly connected to the connecting plates (1) through fastening components; The fastening component comprises a U-shaped bolt (4) clamped on the rod body of the connecting rod (3) and a reinforcement component arranged on both sides of the U-shaped bolt (4) for enhancing the clamping effect of the U-shaped bolt (4) on the connecting rod (3); both ends of the connecting rod (3) are inserted into the inner side of the connecting plate (1) and are threadedly connected with nuts (5); The reinforcing component comprises a locking seat (6) with an open side fixed on the bottom surface of the connecting plate (1), the open side of the locking seat (6) faces the U-shaped bolt (4), a positioning block (7) is slidably arranged in the open side of the locking seat (6), and an annular positioning groove (8) adapted to the positioning block (7) is arranged around the outer walls on both sides of the U-shaped bolt (4), one end of the positioning block (7) is inserted into the annular positioning groove (8), and a reset piece is arranged at the other end of the positioning block (7), and a pressure groove (10) with a longitudinal section in the shape of a right-angled trapezoid is arranged in the inner wall of the positioning block (7), and an extrusion piece is arranged in the pressure groove (10).

2. An elevator car bottom wheel mounting structure according to claim 1, characterized in that: The reset member is a reset spring (9), and the two ends of the reset spring (9) are respectively fixedly connected to the innermost wall of the positioning block (7) and the locking seat (6).

3. The elevator car bottom wheel installation structure according to claim 2, characterized in that: The extrusion member comprises a threaded sleeve (11) fixedly embedded in the inner wall of the bottom end of the locking seat (6), a screw (12) is threadedly connected to the inner side of the threaded sleeve (11), one end of the screw (12) penetrates into the pressure groove (10) and is fixed with an extrusion block (13), and the other end of the screw (12) is fixed with a torsion block (14).

4. The elevator car bottom wheel mounting structure according to claim 3, characterized in that: The extrusion block (13) corresponds to the oblique inner wall of the pressure-bearing groove (10), and the oblique inner wall of the pressure-bearing groove (10) faces the U-shaped bolt (4).

5. The elevator car bottom wheel mounting structure according to claim 1, characterized in that: The connecting rod (3) is provided with a cutout (15), and the cutout (15) is fitted with the bottom surface of the connecting plate (1).

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