Roller testing device for escalator

Abstract

The utility model discloses a kind of roller testing devices of escalator, including base, host computer, wave wheel, support plate, roller;The host computer is set on base, with the output shaft of being driven rotation;The wave wheel is coaxially fixed on output shaft;The wheel surface of the wave wheel is the wave surface formed by the alternate link of multiple concave surface and multiple convex surface;The support plate is set on base, and coaxially sleeve joint on the outside of output shaft;At least a group of rollers are set on support plate, and rotate around its central axis;The roller is arranged outside wave wheel;The wheel surface of the roller is arranged to the wheel surface of wave wheel, and assembly spacing is formed between the two;When the output shaft rotates, the wheel surface of roller and the wheel surface of wave wheel intermittent contact cooperation.The utility model can apply intermittent impact load in the process of roller rotation, to verify the fatigue life of roller under more stringent conditions, and it is practical.

Description

Technical Field

[0001] This utility model relates to the field of escalator technology, and in particular to a roller testing device for escalators. Background Technology

[0002] In escalator systems, rollers are widely used as components. To assess their rotational fatigue life, specialized tests are required. Current escalator roller testing equipment typically employs the following method: a central metal disc rotates, causing the outer rollers under test to rotate synchronously. Once a specific rotational speed is set for the disc, the roller under test contacts the disc and maintains a uniform speed for a period of time, thus verifying the roller's fatigue life. However, this method has limitations; it only allows for uniform and smooth rotation of the rollers and cannot perform intermittent impact tests. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a roller testing device for escalators that can apply intermittent impact loads during roller rotation to verify the fatigue life of the roller under more severe conditions, which is highly practical.

[0004] The technical solution of this utility model is achieved as follows: a roller testing device for escalators, comprising a base, a main unit, a wave wheel, a support plate, and rollers;

[0005] The main unit is mounted on the base and has an output shaft that is driven to rotate.

[0006] The wave wheel is coaxially fixed to the output shaft; the surface of the wave wheel is a wave surface formed by alternating concave and convex surfaces.

[0007] The support plate is mounted on the base and coaxially sleeved on the outside of the output shaft;

[0008] At least one set of rollers is mounted on the support plate and rotates around its own central axis; the rollers are arranged outside the wave wheel; the wheel surface of the rollers faces the wheel surface of the wave wheel, and an assembly gap is formed between them; when the output shaft rotates, the wheel surface of the rollers and the wheel surface of the wave wheel intermittently contact and engage.

[0009] Furthermore, both the concave and convex surfaces are arc-shaped; adjacent concave and convex surfaces are smoothly connected.

[0010] Furthermore, the assembly spacing is formed between the wheel surface of the roller and the lowest point of the concave surface corresponding to it in the radial direction.

[0011] Furthermore, one end of the support plate and the base abuts against each other in the axial direction of the output shaft.

[0012] Furthermore, the wave wheel has a virtual circle centered on the central axis; the highest point of each of the convex surfaces is located on the virtual circle; the roller testing device includes a positioning plate and a locking assembly detachably fixed to the support plate; the positioning plate is provided with a positioning hole; the inner diameter of the positioning hole is adapted to the diameter of the virtual circle; the positioning plate has a positioning state in which it is sleeved on the outside of the wave wheel through the positioning hole; in the positioning state, the inner circumferential surface of the positioning hole forms a clearance fit with the highest point of the convex surface, and the support plate and the output shaft are coaxially arranged; the locking assembly is disposed between the base and the support plate, and is used to lock the base and the support plate together in the positioning state.

[0013] Furthermore, the output shaft has a first radial direction and a second radial direction that are perpendicular to each other; the locking assembly includes a radial locking assembly;

[0014] The radial locking assembly includes an abutment seat and an abutment bolt; of the support plate and the base, the abutment seat is provided on one of them, and the abutment bolt is threadedly connected to the other; one end of the abutment bolt abuts against the abutment seat; the radial locking assemblies are disposed opposite to each other on opposite sides of a first radial direction and opposite sides of a second radial direction; the abutment bolt of the radial locking assembly on the first radial direction moves along the first radial direction, and the abutment bolt of the radial locking assembly on the second radial direction moves along the second radial direction;

[0015] Furthermore, the locking assembly includes an axial locking assembly; the axial locking assembly includes a first bolt assembly; of the support plate and the base, one is provided with a first oblong hole extending along a first radial direction and penetrating along the axial direction of the output shaft, and the other is provided with a second oblong hole extending along a second radial direction and penetrating along the axial direction of the output shaft; the first bolt assembly is inserted into the first oblong hole and the second oblong hole to lock the support plate and the base.

[0016] Furthermore, the support plate is provided with a socket; the central shaft of the roller is axially inserted into the socket; the central shaft of the roller is provided with a limiting structure for restricting the axial movement of the central shaft of the roller.

[0017] Furthermore, an adjustment component is provided between the main unit and the base; the adjustment component is used to adjust the position of the main unit relative to the base in the axial direction of the output shaft.

[0018] Furthermore, the adjustment assembly includes a second bolt assembly; of the base and the main unit, one has a third oblong hole extending axially along the output shaft, and the other has a through hole; the second bolt assembly is inserted into the third oblong hole and the through hole to lock the base and the main unit.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] 1. This utility model utilizes a wave wheel with a wavy surface. When the output shaft rotates, the wave wheel rotates accordingly, and the surface of the roller can intermittently contact and engage with the surface of the wave wheel, thereby driving the roller to rotate and applying intermittent impact loads to the roller to verify the fatigue life of the roller under more severe conditions. It is highly practical.

[0021] 2. This utility model utilizes a positioning plate, which is detachably fixed to the support plate. When the positioning plate is fitted onto the outside of the wave wheel through the positioning hole, the positioning hole and the highest point of the wave wheel's convex surface form a clearance fit, achieving precise positioning of the positioning plate relative to the wave wheel. This, in turn, achieves precise positioning of the support plate relative to the wave wheel, ensuring that the support plate, output shaft, and wave wheel are coaxially arranged. This method facilitates precise positioning of the support plate, saving time and effort and effectively improving testing efficiency. Attached Figure Description

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0023] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0024] Figure 2 for Figure 1 Main view structural diagram;

[0025] Figure 3 for Figure 1 Enlarged view of point A in the image;

[0026] Figure 4 for Figure 1 Exploded view;

[0027] Figure 5 for Figure 1 A three-dimensional structural diagram from another perspective;

[0028] Figure 6 This is a schematic diagram of the assembly of the roller and the support plate of this utility model;

[0029] Figure 7 This is a schematic diagram of the installation of the locking component of this utility model;

[0030] Figure 8 for Figure 7 Main view structural diagram;

[0031] Figure 9 This is a schematic diagram of the assembly of the positioning plate and the wave wheel of this utility model;

[0032] Figure 10 for Figure 9Main view structural diagram;

[0033] Figure 11 for Figure 9 Exploded view;

[0034] Figure 12 This is a schematic diagram of the front view structure of the wave wheel of this utility model;

[0035] The components are as follows: 1. Base; 11. Assembly plate; 12. First oblong hole; 2. Main unit; 21. Output shaft; 22. Third oblong hole; 3. Wave wheel; 31. Wave surface; 311. Concave surface; 312. Convex surface; 32. Virtual circle; 4. Support plate; 41. Center hole; 42. Insertion hole; 43. Assembly hole; 44. Second oblong hole; 5. Roller; 51. Central shaft; 52. Pin; 6. Radial locking assembly; 61. Abutment bolt; 62. Abutment seat; 63. Connecting seat; 7. First bolt assembly; 8. Second bolt assembly; 9. Positioning plate; 91. Positioning hole. Detailed Implementation

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0037] like Figure 1-12 The diagram shows a testing device for the roller 5 of an escalator according to this embodiment. The testing device includes a base 1, a main unit 2, a wave wheel 3, a support plate 4, and rollers 5. The rollers 5 are the components to be tested and are a common component of the escalator. The aforementioned main unit 2 is mounted on the base 1 and has an output shaft 21 that is driven to rotate. Specifically, the main unit 2 includes a motor and a gearbox. The output end of the motor is drivenly connected to the input end of the gearbox, and the output shaft 21 is drivenly connected to the output end of the gearbox, enabling it to be driven to rotate.

[0038] In this embodiment, an adjustment assembly is installed between the main unit 2 and the base 1 to adjust the position of the main unit 2 relative to the base 1 in the axial direction of the output shaft 21. Specifically, this adjustment assembly includes a second bolt assembly 8. One of the base 1 and the main unit 2 has a third oblong hole 22 extending axially along the output shaft 21, and the other has a through hole. The aforementioned second bolt assembly 8 is a conventional component of the prior art, including a bolt and a nut. The second bolt assembly 8 is inserted into the third oblong hole 22 and the through hole. By adjusting the position of the through hole relative to the third oblong hole 22, the axial position of the main unit 2 relative to the base 1 in the output shaft 21 can be adjusted. The second bolt assembly 8 is used to lock the base 1 and the main unit 2 together.

[0039] The aforementioned wave wheel 3 is coaxially fixed to the output shaft 21. When the output shaft 21 rotates, the wave wheel 3 rotates synchronously. The surface of the wave wheel 3 is a wave surface 31 formed by alternating concave surfaces 311 and convex surfaces 312. Along the diameter direction of the wave wheel 3, the concave surfaces 311 are recessed inwards, while the convex surfaces 312 protrude outwards. Both the concave surfaces 311 and convex surfaces 312 are arc-shaped surfaces. Adjacent concave surfaces 311 and convex surfaces 312 are smoothly connected.

[0040] In this embodiment, the wave wheel 3 is fitted onto the output shaft 21 through its own shaft hole, and the relative rotation between the two is restricted by the cooperation of a key and a keyway. The first end face of the wave wheel 3 abuts against the output shaft 21, and a fastener is threadedly connected to the end of the output shaft 21. This fastener abuts against the second end face of the wave wheel 3, thereby restricting the axial movement of the wave wheel 3 on the output shaft 21. By removing the fastener, the wave wheel 3 can be removed from the output shaft 21.

[0041] The aforementioned support plate 4 is arranged on the base 1, and a central hole 41 is machined on the support plate 4. By adjusting the position of the support plate 4 on the base 1, the central hole 41 on the support plate 4 can be coaxially sleeved on the outside of the output shaft 21. Several sets of rollers 5 are arranged at intervals around the circumference of the central hole 41. The rollers 5 are connected to the support plate 4 so that they can rotate around their own central axis 51. In the specific structural design, a corresponding insertion hole 42 is machined on the support plate 4 for each roller 5. The central shaft 51 is inserted into the shaft hole of the roller 5. The roller 5 can rotate around the central axis 51. The central shaft 51 of the roller 5 and the insertion hole 42 are axially inserted to achieve assembly. Among them, a limiting structure for limiting the axial movement of the roller 5 is arranged on the central shaft 51. The limiting structure includes a limiting block and a pin 52. One end of the central shaft 51 is machined with a limit block to restrict the movement of the roller 5 toward that end of the central shaft 51. The other end of the central shaft 51 is fitted with a pin 52 to restrict the movement of the roller 5 toward that end of the central shaft 51. Through this structural design, the roller 5 is detachably mounted on the support plate 4. The roller 5 can be disassembled and replaced by pulling out the pin 52 and removing the central shaft 51 from the insertion hole 42. It should be noted that the diameters of the various rollers 5 can be the same or different.

[0042] The rollers 5 described above are arranged on the outer side of the wave wheel 3. The wheel surface of the roller 5 faces the wheel surface of the wave wheel 3, and there is an assembly gap between them. By reasonably designing the value of the assembly gap, when the output shaft 21 rotates, the wheel surface of the roller 5 can intermittently contact and engage with the wheel surface of the wave wheel 3. When the wheel surface of the wave wheel 3 contacts the wheel surface of the roller 5, it drives the roller 5 to rotate and applies intermittent impact loads to the roller 5.

[0043] In this embodiment, the assembly spacing is formed between the wheel surface of the aforementioned roller 5 and the lowest point of the concave surface 311 corresponding to it in the radial direction.

[0044] The aforementioned wave wheel 3 has a virtual circle 32 centered on the central axis 51. The highest point of the convex surface 312 of each wave surface 31 is located on the virtual circle 32. The highest point of the convex surface 312 is positioned radially on the wave wheel 3. The roller 5 testing device of this embodiment includes a positioning plate 9 detachably fixed to the support plate 4 and a locking assembly. The positioning plate 9 has a positioning hole 91 machined on it. The inner diameter of the positioning hole 91 is adapted to the diameter of the virtual circle 32. During assembly, the positioning plate 9 is sleeved on the outside of the wave wheel 3 through the positioning hole 91, and a clearance fit is formed between the inner circumferential surface of the positioning hole 91 and the highest point of each convex surface 312 to form a positioning state. In this positioning state, the central hole 41 on the support plate 4 is coaxially arranged with the output shaft 21.

[0045] In the specific structural design, several mounting holes 43 are arranged on the support plate 4. Bolts are inserted into the positioning plate 9 and threadedly connected to the mounting holes 43, thereby fixing the positioning plate 9 onto the support plate 4. When the positioning plate 9 is installed on the support plate 4, the positioning holes 91 on the positioning plate 9 and the center hole 41 on the support plate 4 are coaxially arranged.

[0046] In this embodiment, the aforementioned locking assembly is installed between the base 1 and the support plate 4 to lock the base 1 and the support plate 4 together in a positioning state. A mounting plate 11 is arranged on the base 1. The support plate 4 is arranged on one side of the mounting plate 11 and abuts against the mounting plate 11 axially with the output shaft 21. The aforementioned output shaft 21 has a first radial direction and a second radial direction that are perpendicular to each other. In this embodiment, the mounting plate 11 is defined as vertically arranged, the first radial direction is the left-right direction, and the second radial direction is the up-down direction.

[0047] The aforementioned locking assembly includes a radial locking assembly 6 and an axial locking assembly. The radial locking assembly 6 includes an abutment seat 62, a connecting seat 63, and an abutment bolt 61. The abutment seat 62 is fixed to one of the support plate 4 and the connecting plate, and the connecting seat 63 is fixed to the other. The abutment bolt 61 is inserted into and threaded onto the connecting seat 63. One end of the abutment bolt 61 abuts against the abutment seat 62. Several sets of radial locking assemblies 6 are arranged opposite each other on opposite sides of the first radial direction and opposite sides of the second radial direction. The abutment bolt 61 of the radial locking assembly 6 on the first radial direction moves along the first radial direction, and the abutment bolt 61 of the radial locking assembly 6 on the second radial direction moves along the second radial direction. Through this structural design, when the positioning plate 9 is in a positioned state, the abutment bolts 61 of each radial locking assembly 6 are tightened to abut against the abutment seat 62, thereby restricting the movement of the support plate 4 in the first and second radial directions, and thus achieving the locking of the support plate 4 in the radial direction of the output shaft 21.

[0048] The locking assembly includes an axial locking assembly. This axial locking assembly includes a first bolt assembly 7. One of the support plate 4 and the base 1 has a first oblong hole 12 extending radially and penetrating axially along the output shaft 21, and the other has a second oblong hole 44 extending radially and penetrating axially along the output shaft 21. The aforementioned first bolt assembly 7 is a conventional component of the prior art, including a bolt and a nut. When the positioning plate 9 is in a positioned state, the first bolt assembly 7 is inserted into the first oblong hole 12 and the second oblong hole 44 to lock the support plate 4 and the base 1, thereby achieving axial locking of the support plate 4 on the output shaft 21.

[0049] In specific operation, the wave wheel 3 is assembled onto the output shaft 21, and then the support plate 4 is fitted onto the outside of the wave wheel 3. The main unit 2 and the support plate 4 are hoisted onto the base 1 as a whole. The positioning plate 9 is then fitted onto the wave wheel 3, so that one end face of the positioning plate 9 is basically flush with one end face of the wave wheel 3. The positioning plate 9 and the support plate 4 are fixed together with bolts. The position of the main unit 2 in the axial direction of the output shaft 21 is adjusted by adjusting the assembly so that the support plate 4 is in contact with the mounting plate 11 on the base 1. After the above steps are completed, the support plate 4 is locked and fixed onto the mounting plate 11 by the locking assembly. The positioning plate 9 is removed, and then the roller 5 is installed on the support plate 4 at a predetermined position via the central shaft 51 and the pin 52. In the above method, the positioning plate 9 is detachably fixed to the support plate 4. When the positioning plate 9 is fitted onto the outside of the wave wheel 3 through the positioning hole 91, the positioning hole 91 and the highest point of the convex surface 312 of the wave wheel 3 form a clearance fit to achieve precise positioning of the positioning plate 9 relative to the wave wheel 3, thereby achieving precise positioning of the support plate 4 relative to the wave wheel 3. This makes the support plate 4, the output shaft 21 and the wave wheel 3 coaxially arranged, which can conveniently achieve precise positioning of the support plate 4, saving time and effort and effectively improving testing efficiency.

[0050] In practical use, the surface of the wave wheel 3 is a wave surface 31. When the output shaft 21 rotates, the wave wheel 3 rotates accordingly, and the surface of the roller 5 can intermittently contact and cooperate with the surface of the wave wheel 3, thereby driving the roller 5 to rotate and applying intermittent impact loads to the roller 5 to verify the fatigue life of the roller 5 under more severe conditions.

[0051] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A roller testing device for escalators, comprising a base, a main unit, a wave wheel, a support plate, and rollers; characterized in that: The main unit is mounted on the base and has an output shaft that is driven to rotate. The wave wheel is coaxially fixed to the output shaft; the surface of the wave wheel is a wave surface formed by alternating concave and convex surfaces. The support plate is mounted on the base and coaxially sleeved on the outside of the output shaft; At least one set of rollers is mounted on the support plate and rotates around its own central axis; the rollers are arranged outside the wave wheel; the wheel surface of the rollers faces the wheel surface of the wave wheel, and an assembly gap is formed between them; when the output shaft rotates, the wheel surface of the rollers and the wheel surface of the wave wheel intermittently contact and engage.

2. The escalator roller testing device according to claim 1, characterized in that: Both the concave and convex surfaces are arc-shaped; adjacent concave and convex surfaces are smoothly connected.

3. The escalator roller testing device according to claim 1, characterized in that: The assembly spacing is formed between the wheel surface of the roller and the lowest point of the concave surface corresponding to it in the radial direction.

4. The escalator roller testing device according to claim 1, characterized in that: The support plate and one end of the base abut against each other in the axial direction of the output shaft.

5. The escalator roller testing device according to claim 1, characterized in that: The wave wheel has a virtual circle centered on the central axis; the highest point of each of the convex surfaces is located on the virtual circle; the roller testing device includes a positioning plate and a locking assembly detachably fixed to the support plate; the positioning plate is provided with a positioning hole; the inner diameter of the positioning hole is adapted to the diameter of the virtual circle; the positioning plate has a positioning state in which it is sleeved on the outside of the wave wheel through the positioning hole; in the positioning state, the inner circumferential surface of the positioning hole forms a clearance fit with the highest point of the convex surface, and the support plate and the output shaft are coaxially arranged; the locking assembly is disposed between the base and the support plate for locking the base and the support plate together in the positioning state.

6. The escalator roller testing device according to claim 5, characterized in that: The output shaft has a first radial and a second radial that are perpendicular to each other; the locking assembly includes a radial locking assembly. The radial locking assembly includes an abutment seat and an abutment bolt; of the support plate and the base, the abutment seat is provided on one of them, and the abutment bolt is threadedly connected to the other; one end of the abutment bolt abuts against the abutment seat; the radial locking assembly is disposed opposite to each other on opposite sides of a first radial direction and opposite sides of a second radial direction; the abutment bolt of the radial locking assembly on the first radial direction moves along the first radial direction, and the abutment bolt of the radial locking assembly on the second radial direction moves along the second radial direction.

7. The escalator roller testing device according to claim 6, characterized in that: The locking assembly includes an axial locking assembly; the axial locking assembly includes a first bolt assembly; of the support plate and the base, one is provided with a first oblong hole extending along a first radial direction and penetrating along the axial direction of the output shaft, and the other is provided with a second oblong hole extending along a second radial direction and penetrating along the axial direction of the output shaft; the first bolt assembly is inserted into the first oblong hole and the second oblong hole to lock the support plate and the base.

8. The escalator roller testing device according to claim 1, characterized in that: The support plate is provided with a socket; the central shaft of the roller is axially inserted into the socket; the central shaft of the roller is provided with a limiting structure for restricting the axial movement of the central shaft of the roller.

9. The escalator roller testing device according to claim 1, characterized in that: An adjustment component is provided between the main unit and the base; the adjustment component is used to adjust the position of the main unit relative to the base in the axial direction of the output shaft.

10. The escalator roller testing device according to claim 9, characterized in that: The adjustment assembly includes a second bolt assembly; of the base and the main unit, one has a third oblong hole extending axially along the output shaft, and the other has a through hole; the second bolt assembly is inserted into the third oblong hole and the through hole to lock the base and the main unit.

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