Roller guide shoe of backpack frame elevator

Abstract

The invention discloses a roller guide shoe of a backpack frame elevator, comprising a guide shoe mounting plate fixedly connected to an elevator column; an L-shaped baffle is arranged at one end of the guide shoe mounting plate; the roller assembly is in contact with a guide rail of the elevator; the fixed shaft and eccentric nut assembly is used for connecting the roller assembly; the eccentric nut assembly comprises an eccentric nut and an eccentric nut fixing piece. The connecting plate is sleeved on the fixed shaft in a penetrating manner and is tightly attached to one side of the guide shoe mounting plate; the other side of the guide shoe installation plate is tightly attached to an eccentric nut arranged on the fixing shaft in a penetrating and sleeving mode, and an eccentric nut fixing piece is arranged on the portion, outside the eccentric nut, of the fixing shaft in a penetrating and sleeving mode. The rolling wheel assembly comprises a rolling wheel shaft, and the rolling wheel shaft is fixedly connected with the connecting plate; the elastic element is arranged on the L-shaped baffle at one end of the guide shoe mounting plate, one end of the elastic element is connected with the L-shaped baffle, and the other end of the elastic element is connected with the connecting plate. The condition of virtual contact of the guide rails can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, in particular to a roller guide shoe of a backpack elevator. Background Art

[0002] The structure of the backpack elevator is different from that of the ordinary gantry structure. Figure 1 As shown, its characteristics are: the car frame is an L-shaped backpack frame, the car bottom is connected to the backpack frame to form a cantilever beam structure, and roller guide shoes are installed on the upper and lower ends of the backpack frame columns. When the elevator is running, the rolling guide shoes roll up and down along the guide rails.

[0003] like Figure 2 As shown, the rolling guide shoe of the backpack elevator can solve the problem of single-point contact and large wear of a single roller by setting two symmetrical roller assemblies on the connecting plate, and can improve the life of the roller guide shoe. At the same time, due to the rotational positioning connection between the connecting plate and the rotating shaft, the floating adjustment of the roller assembly relative to the car guide rail can be achieved, thereby solving the problem of poor elevator running comfort caused by deformation of the car guide rail.

[0004] However, the disclosed technology still has problems in actual working conditions. Due to the uneven load during the operation of the backpack elevator, one of the four sets of roller guide shoes of the backpack elevator may not contact or only have virtual contact with the surface of the guide rail during the actual operation, resulting in partial wear of the other three sets of roller guide shoes, affecting the stability of the elevator operation and the life of the guide shoes. The corresponding public document number of the prior art is CN 204607320 U. Summary of the invention

[0005] The technical problem to be solved by the present invention is how to prevent the roller guide shoe from having virtual contact with the guide rail.

[0006] In order to solve the above technical problems, the present invention provides a roller guide shoe of a backpack elevator, comprising:

[0007] A guide shoe mounting plate is fixedly connected to the elevator column; one end of the guide shoe mounting plate is provided with an L-shaped baffle;

[0008] A roller assembly, which contacts the guide rail of the elevator;

[0009] A fixed shaft and eccentric nut assembly, used to connect the roller assembly; the eccentric nut assembly includes an eccentric nut and an eccentric nut fixing piece;

[0010] A connecting plate is sleeved on the fixed shaft and is in close contact with one side of the guide shoe mounting plate; the other side of the guide shoe mounting plate is in close contact with the eccentric nut sleeved on the fixed shaft, and an eccentric nut fixing piece is sleeved on the fixed shaft outside the eccentric nut;

[0011] A roller assembly, comprising a roller shaft, wherein the roller shaft is fixedly connected to the connecting plate;

[0012] The elastic element is arranged on the L-shaped baffle at one end of the guide shoe mounting plate, one end of the elastic element is connected to the L-shaped baffle, and the other end is connected to the connecting plate.

[0013] Preferably, the elastic element is a rubber block.

[0014] Preferably, the elastic element is a spring.

[0015] Preferably, the number of the L-shaped baffle is at least one.

[0016] Preferably, the number of the elastic element is at least one.

[0017] Preferably, the guide shoe mounting plate is fixedly connected to the elevator column through through holes and bolts.

[0018] Preferably, the eccentric nut fixing piece is a nut.

[0019] Preferably, a spring washer is sleeved on the fixed shaft outside the eccentric nut.

[0020] Compared with the prior art, the present invention has the following technical effects:

[0021] The anti-virtual contact roller guide shoe of a backpack rack elevator described in the present invention is achieved by adding an L-shaped baffle structure to the roller guide shoe mounting plate, installing an elastic element at the L-shaped baffle, and applying a pre-tightening force to the elastic element. The pre-tightening force applied by the elastic device causes the connecting plate to rotate around the fixed axis and makes the rollers fit tightly to the guide surface of the guide rail. During the operation of the elevator, it is ensured that the rollers of the four guide shoes can all fit tightly to the guide surface of the guide rail, thereby avoiding the eccentric wear of the guide shoe rollers and also improving the comfort of the elevator operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0023] Figure 1-Figure 2 The present invention is a schematic diagram of a roller guide shoe of a backpack elevator in the prior art.

[0024] Figure 3-Figure 4 It is a structural schematic diagram of a roller guide shoe embodiment 1 of a backpack elevator of the present invention.

[0025] Figure 5 It is a schematic diagram of a usage scenario of the roller guide shoe of the backpack stand elevator of the present invention.

[0026] Figure 6-Figure 7 It is a structural schematic diagram of the roller guide shoe embodiment 2 of the backpack frame elevator of the present invention.

[0027] Description of Reference Numerals

[0028]

[0029] DETAILED DESCRIPTION

[0030] The following describes the implementation methods of the present invention through specific specific embodiments, and those skilled in the art can fully understand other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific implementation methods, and the details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the overall design concept of the invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other in the absence of conflict. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art.

[0031] Example 1

[0032] The invention discloses a roller guide shoe of a backpack elevator, comprising:

[0033] A guide shoe mounting plate is fixedly connected to the elevator column; one end of the guide shoe mounting plate is provided with an L-shaped baffle;

[0034] A roller assembly, which contacts the guide rail of the elevator;

[0035] A fixed shaft and eccentric nut assembly, used to connect the roller assembly; the eccentric nut assembly includes an eccentric nut and an eccentric nut fixing piece;

[0036] A connecting plate is sleeved on the fixed shaft and is in close contact with one side of the guide shoe mounting plate; the other side of the guide shoe mounting plate is in close contact with the eccentric nut sleeved on the fixed shaft, and an eccentric nut fixing piece is sleeved on the fixed shaft outside the eccentric nut;

[0037] A roller assembly, comprising a roller shaft, wherein the roller shaft is fixedly connected to the connecting plate;

[0038] The elastic element is arranged on the L-shaped baffle at one end of the guide shoe mounting plate, one end of the elastic element is connected to the L-shaped baffle, and the other end is connected to the connecting plate.

[0039] The present invention is further described below with reference to the accompanying drawings. In one embodiment, Figure 3 , Figure 4As shown, the anti-virtual contact rolling guide shoe for a backpack elevator of the present invention specifically includes a connecting plate 1, a roller assembly 2, a guide shoe mounting plate 3, a fixed shaft 4, an elastic element, an eccentric nut 6, a spring washer 7, and a nut 8.

[0040] The roller shaft 21 of the roller assembly 2 is fixedly connected to the connecting plate 1, the connecting plate 1 is sleeved on the fixed shaft 4 and is in close contact with the guide shoe mounting plate 3, the other side of the guide shoe mounting plate 3 is in close contact with the eccentric nut 6 sleeved on the fixed shaft 4, and the spring washer 7 and the nut 8 are sequentially sleeved on the fixed shaft 4 outside the eccentric nut 6.

[0041] In this embodiment, the elastic element is a rubber block 5, one end of the guide shoe mounting plate 3 is an L-shaped baffle, and the rubber block 5 is installed at the L-shaped baffle. The L-shaped baffle should be at least one, and in the embodiment of the present invention, there are two L-shaped baffles, and three or other numbers can also be set. Similarly, the number of elastic elements should also be compatible with the L-shaped baffle.

[0042] like Figure 5 As shown in FIG. 1 , the roller guide shoes of the backpack elevator of the present invention are installed on the elevator columns 9 and are symmetrically distributed at the upper and lower positions of the two columns. The rollers in the roller assembly 2 are in contact with the guide rails 12 (here only Figure 5 The guide rail 12 is shown at a group of rollers on the upper left, and the guide rails are not shown at the other three groups of roller assemblies, but in the actual scene, the four groups of rollers are in contact with the guide rails); the eccentric nut 6 can be rotatably inserted into the fixed shaft 4. In this way, the guide shoe mounting plate 3 is fixedly connected to the elevator column 9 through the through hole 31 of the mounting plate, and the connecting plate 1 drives the roller assembly to be rotatably inserted into the fixed shaft 4 through the eccentric nut 6. By rotating and adjusting the eccentric nut, the connecting plate 1 drives the roller assembly and the guide shoe mounting plate to generate displacement, so that the contact pressure between the roller assembly 2 and the guide surface of the guide rail 12 can be adjusted, so that the roller is close to the guide surface of the guide rail 12.

[0043] When installing the elastic element, a preload may be applied to the elastic element to compress the elastic element, thereby pressing one end of the connecting plate 1 to generate a torque around the fixed shaft 4, thereby forcing the roller of the roller assembly 2 on the pressed side to be in close contact with the guide surface of the guide rail 12, thereby avoiding virtual contact of the guide rail. Virtual contact here refers to the situation where one of the four sets of guide shoes does not contact the guide rail, resulting in excessive force on the other three sets of guide shoes.

[0044] Since the four groups of roller guide shoes are all provided with elastic elements, when the rollers of one group of roller guide shoes tend to leave the guide surface of the guide rail, the elastic element at one end of the connecting plate can be adaptively adjusted to make the rollers close to the guide surface of the guide rail again.

[0045] The present invention prevents the virtual contact of the guide shoe, is conducive to balancing the wear of the four groups of rollers, avoids premature damage of the rollers due to eccentric wear, and improves the running comfort of the elevator.

[0046] Example 2

[0047] like Figure 6 and Figure 7 As shown, on the basis of Example 1, the elastic element is replaced by the rubber block 5 with a spring 10, which is inserted into the limiting stud 11. The limiting stud is installed at the L-shaped baffle to fix and limit the spring. A pre-tightening force can be applied to the spring to compress one end of the connecting plate to generate a torque around the fixed axis, thereby forcing the roller on the pressed side to fit tightly against the guide surface of the guide rail, thereby avoiding virtual contact between the guide shoe and the guide rail.

[0048] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A roller guide shoe for a backpack elevator, characterized in that: include: A guide shoe mounting plate is fixedly connected to the elevator column; one end of the guide shoe mounting plate is provided with an L-shaped baffle; A roller assembly, which contacts the guide rail of the elevator; A fixed shaft and eccentric nut assembly, used to connect the roller assembly; the eccentric nut assembly includes an eccentric nut and an eccentric nut fixing piece; A connecting plate is sleeved on the fixed shaft and is in close contact with one side of the guide shoe mounting plate; the other side of the guide shoe mounting plate is in close contact with the eccentric nut sleeved on the fixed shaft, and an eccentric nut fixing piece is sleeved on the fixed shaft outside the eccentric nut; A roller assembly, comprising a roller shaft, wherein the roller shaft is fixedly connected to the connecting plate; The elastic element is arranged on the L-shaped baffle at one end of the guide shoe mounting plate, one end of the elastic element is connected to the L-shaped baffle, and the other end is connected to the connecting plate.

2. The roller guide shoe of the backpack elevator according to claim 1, characterized in that: The elastic element is a rubber block.

3. The roller guide shoe of the backpack rack elevator according to claim 1, characterized in that: The elastic element is a spring.

4. The roller guide shoe of the backpack rack elevator according to claim 1, characterized in that: The number of the L-shaped baffle is at least one.

5. The roller guide shoe of the backpack elevator according to claim 1, characterized in that: The number of the elastic element is at least one.

6. The roller guide shoe of the backpack elevator according to claim 1, characterized in that: The guide shoe mounting plate is fixedly connected to the elevator column through through holes and bolts.

7. The roller guide shoe of the backpack rack elevator according to claim 1, characterized in that: The eccentric nut fixing piece is a nut.

8. The roller guide shoe of the backpack elevator according to claim 7, characterized in that: A spring washer is sleeved on the fixed shaft outside the eccentric nut.

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