Double-support roller structure of elevator

Abstract

The utility model particularly discloses a lift double-support roller structure, which comprises a support seat, an eccentric shaft and a waist roller, a bent plate is fixed at the side end of the support seat, an adjusting hexagonal sleeve is arranged in the support seat, the top end of the eccentric shaft is fixed in the adjusting hexagonal sleeve, and the bottom end of the eccentric shaft is arranged in the inner side of the bent plate. A double-roller shaft sleeve is further fixed to the outer circumferential side, located between the supporting base and the bent plate, of the eccentric shaft, a double-roller frame is connected to the outer side of the shaft sleeve in a sleeving mode, a waist roller shaft is arranged in the double-roller frame, a waist roller shaft sleeve is fixed to the outer circumferential side of the waist roller shaft, and a bearing is connected to the outer circumferential side of the waist roller shaft sleeve in a sleeving mode. The waist roller is fixed on the bearing; the utility model has the characteristics of simple structure, good strength and rigidity, good operation stability, long service life and attractive appearance.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, and particularly relates to a double-support roller structure of a lift. Background Art

[0002] Lifts can be divided into mobile lifts and fixed lifts in terms of usage. The mobile lift uses multiple X-shaped rods connected in a cross manner, with a platform installed at the top. A telescopic cylinder body is connected to the lower end of the platform, and the bottom end uses back wheels for movement. The fixed lift is composed of a lifting frame and a cage. The cage is connected to the motor on the lifting frame through steel ropes. In order to keep the cage safer and more stable during lifting, a roller structure is used for support between the cage and the lifting frame. For example, Patent No. 201520775421.1 discloses a double-roller assembly device applicable to a construction lift, and Patent No. 201310412336.4 discloses a double-roller device of a lift and a lift having the same. Most of the double rollers on the market adopt the structure shown in Figure 1. However, such structures are connected to the cage by a bolt shaft, and the connection method with the cage is similar to a cantilever beam structure, with insufficient strength and rigidity, prone to bumps during operation, and short service life. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a double-support roller structure of a lift, which has a simple structure, good strength and rigidity, good running stability, long service life, and beautiful appearance.

[0004] To solve the above problems, the utility model adopts the following technical solutions:

[0005] A double-support roller structure of a lift includes a support seat, an eccentric shaft, and a waist roller. A bent plate is fixed to the side end of the support seat. An adjusting hexagonal sleeve is arranged inside the support seat. The top end of the eccentric shaft is fixed inside the adjusting hexagonal sleeve, and the bottom end is arranged inside the inner side of the bent plate. A double-roller bushing is also fixed to the outer circumferential side of the eccentric shaft between the support seat and the bent plate. A double-roller frame is sleeved on the outer side of the bushing. A waist-roller shaft is arranged inside the double-roller frame. A waist-roller bushing is fixed to the outer circumferential side of the waist-roller shaft. A bearing is sleeved on the outer circumferential side of the waist-roller bushing. The waist roller is fixed to the bearing.

[0006] Further technical solution is that the bottom end face of the waist-roller shaft is flush with the bottom end face of the double-roller frame, and a nut is connected to the top end. The nut can prevent the adjusting hexagonal sleeve from disengaging. The waist-roller shaft being flush with the bottom end face of the double-roller frame makes the appearance more compact and beautiful.

[0007] A further technical solution is that a hexagonal slotted nut is threadedly locked at the top end of the eccentric shaft, and an open split pin is also relatively fixed at the top end of the eccentric shaft. The open split pin penetrates through the top end of the eccentric shaft and is connected to the top end of the eccentric shaft by threading or interference fit. Both ends of the open split pin are buckled in the notch of the hexagonal slotted nut to prevent it from falling off the top end of the eccentric shaft.

[0008] A further technical solution is that the waist roller shaft extends to the outside of the top end of the double roller bracket, and a nut is threadedly connected and locked at the top end of the waist roller shaft. A stop washer is also placed between the nut and the double roller bracket on the waist roller shaft. The nut and the stop washer are used to lock the waist roller shaft.

[0009] A further technical solution is that a hole-type elastic washer is buckled between the waist roller shaft sleeve and the waist roller to prevent the waist roller from displacing on the bearing.

[0010] A further technical solution is that a retaining sleeve is also sleeved on the outer circumference of the waist roller shaft sleeve and above the bearing side to prevent the bearing from displacing.

[0011] A further technical solution is that an adjusting plate is also sleeved on the top end of the adjusting hexagonal sleeve, and a square cushion block is fixed on the side end of the adjusting plate. When adjusting, the adjusting plate can be sleeved on the adjusting hexagonal sleeve and rotated. The square cushion block increases the contact area with the hand and is more convenient to rotate. When no adjustment is required, the adjusting plate can be removed.

[0012] A further technical solution is that the bottom end surface of the eccentric shaft is flush with the bottom end surface of the bent plate, making the structure more compact and beautiful.

[0013] The beneficial effects of the present utility model are as follows: The double-support roller structure of the elevator of the present utility model, compared with the existing roller of the suspension arm structure on the market, is supported and connected to the support seat and the bent plate through the upper and lower ends of the eccentric shaft. At the same time, the upper and lower ends of the waist roller shaft are supported and connected to the double roller bracket. The eccentric shaft and the waist roller shaft form a double simply supported beam structure, making the waist roller more stable during use and operation, the overall structure strength and rigidity better, the service life longer, and the appearance more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a structural schematic diagram of the original double-roller structure of the elevator;

[0016] Figure 2This is the front view of a double - support roller structure of a lift for the present utility model;

[0017] Figure 3 This is the cross - sectional view of a double - support roller structure of a lift for the present utility model;

[0018] Figure 4 This is a schematic diagram of the installation of the waist roller shaft on the double - roller frame in a double - support roller structure of a lift for the present utility model.

[0019] Figures 1-4 Where: 1 - double - roller frame, 2 - waist roller, 3 - bearing, 4 - hole - type elastic washer, 5 - retaining sleeve, 6 - waist roller shaft sleeve, 7 - nut, 8 - lock washer, 9 - hexagon slotted nut, 10 - split pin, 11 - adjusting plate, 12 - square cushion block, 13 - adjusting hexagon sleeve, 14 - shaft sleeve, 15 - eccentric shaft, 16 - waist roller shaft, 17 - support seat, 18 - bent plate. Specific embodiments

[0020] The following elaborates on the preferred embodiments of the present utility model in conjunction with the attached drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0021] Refer to Figures 2 to 4 As shown, a double - support roller structure of a lift includes a support seat 17, an eccentric shaft 15 and a waist roller 2. A bent plate 18 is fixed to the side end of the support seat 17. An adjusting hexagon sleeve 13 is built in the support seat 17. The top end of the eccentric shaft 15 is fixed in the adjusting hexagon sleeve 13, and the bottom end is built in the inner side of the bent plate 18. A double - roller shaft sleeve 14 is also fixed to the outer circumferential side of the eccentric shaft 15 between the support seat 17 and the bent plate 18. A double - roller frame 1 is sleeved on the outer side of the shaft sleeve 14. A waist roller shaft 16 is built in the double - roller frame 1. A waist roller shaft sleeve 6 is fixed to the outer circumferential side of the waist roller shaft 16. A bearing 3 is sleeved on the outer circumferential side of the waist roller shaft sleeve 6. The waist roller 2 is fixed to the bearing 3.

[0022] The bottom end surface of the waist roller shaft 16 is flush with the bottom end surface of the double - roller frame 1, and the top end is connected with a nut 7. The nut 7 can prevent the adjusting hexagon sleeve 13 from detaching, and the flush appearance of the waist roller shaft 16 and the bottom end surface of the double - roller frame 1 is more compact and beautiful.

[0023] A hexagon slotted nut 9 is thread - locked at the top end of the eccentric shaft 15. An opening pin 10 is also relatively fixed to the top end of the eccentric shaft 15. The opening pin 10 penetrates through the top end of the eccentric shaft 15 and is connected to the top end of the eccentric shaft 15 by thread or interference fit. The two ends of the opening pin 10 are buckled in the slot of the hexagon slotted nut 9 to prevent it from falling off the top end of the eccentric shaft 15.

[0024] The waist roller shaft 16 extends to the outside of the top of the double roller frame 1. A nut 7 is threadedly connected and locked at the top of the waist roller shaft 16. A stop washer 8 is also placed between the nut 7 and the double roller frame 1 on the waist roller shaft 16. The nut 7 and the stop washer 8 are used to lock the waist roller shaft 16.

[0025] A hole spring washer 4 is also snap-fitted between the waist roller bushing 6 and the waist roller 2 to prevent the waist roller 2 from displacing on the bearing 3.

[0026] A retaining sleeve 5 is also sleeved on the outer circumference of the waist roller bushing 6 and on the upper side of the bearing 3 to prevent the bearing 3 from displacing.

[0027] An adjusting plate 11 is also sleeved on the top of the adjusting hexagon sleeve 13. A square cushion block 12 is fixed to the side end of the adjusting plate 11. When adjusting, the adjusting plate 11 can be sleeved on the adjusting hexagon sleeve 13 and rotated. The square cushion block 12 increases the contact area with the hand and makes rotation more convenient. When no adjustment is needed, the adjusting plate 11 can be removed. The bottom end face of the eccentric shaft 15 is flush with the bottom end face of the bent plate 18, making the structure more compact and beautiful.

[0028] In this embodiment, first, the support seat 17 is installed on the suspension cage. The waist roller 2 is in rolling connection with the upper frame body of the lifting frame, enabling the suspension cage to move up and down. When the internal and external positions of the waist roller 2 need to be adjusted, the adjusting plate 11 is sleeved on the top of the adjusting hexagon sleeve 13 and rotated. Since the adjusting hexagon sleeve 13 is rotatably connected to the support seat 17, the rotation drives the adjusting hexagon sleeve 13 and the eccentric shaft 15 to rotate. Because the eccentric shaft 15 is an eccentric structure, the bushing 14 will also shift inward or outward. The double roller frame 1 is sleeved on the bushing 14 and the two are rotatably connected. The double roller frame 1 can shift inward and outward and finally move the waist roller 2 to adjust the required internal and external distances. The nut 7 at the top of the waist roller shaft 16 is located outside the double roller frame 1. Only a wrench is needed to tighten the nut 7 to fix the waist roller shaft 16, making the operation more convenient.

[0029] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] The above embodiment is only an example of the present invention and is not used to limit the implementation and scope of rights of the present invention. Any technical solutions identical or equivalent to the content described in the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-support roller structure for an elevator, comprising a support seat, an eccentric shaft and a waist roller, characterized in that: A bent plate is fixed to the side end of the support seat, and an adjustable hexagonal sleeve is built into the support seat. The top end of the eccentric shaft is fixed in the adjustable hexagonal sleeve, and the bottom end is built into the inner side of the bent plate. A double roller sleeve is also fixed to the outer circumference side of the eccentric shaft between the support seat and the bent plate, a double roller frame is sleeved on the outer side of the sleeve, a waist roller shaft is built into the double roller frame, a waist roller sleeve is fixed to the outer circumference side of the waist roller shaft, a bearing is sleeved on the outer circumference side of the waist roller sleeve, and the waist roller is fixed on the bearing.

2. The double-support roller structure of an elevator according to claim 1, characterized in that: The bottom end surface of the waist roller shaft is flush with the bottom end surface of the double roller frame, and the top end is connected with a nut.

3. The double-support roller structure of an elevator according to claim 1, characterized in that: The top end of the eccentric shaft is threadedly locked with a hexagonal slotted nut, and the top end of the eccentric shaft is relatively fixed with a cotter pin.

4. The double-support roller structure of an elevator according to claim 1, characterized in that: The waist roller shaft extends to the outside of the top end of the double roller frame, the top end of the waist roller shaft is threadedly connected and locked with a nut, and a stop washer is placed on the waist roller shaft between the nut and the double roller frame.

5. The double-support roller structure of an elevator according to claim 1, characterized in that: An elastic washer for a hole is also buckled between the waist roller shaft sleeve and the waist roller.

6. The double-support roller structure of an elevator according to claim 1, characterized in that: A gear sleeve is sleeved on the outer circumference of the waist roller sleeve and located above the bearing.

7. The double-support roller structure of an elevator according to claim 1, characterized in that: An adjusting plate is sleeved on the top of the adjusting hexagonal sleeve, and a square pad is fixed on the side end of the adjusting plate.

8. The double-support roller structure of an elevator according to claim 1, characterized in that: The bottom end surface of the eccentric shaft is flush with the bottom end surface of the bent plate.

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