Gearbox loading test device

Abstract

The utility model relates to a gear box loading test device, which comprises a motor and a gear box which are in transmission connection, and also comprises a cover plate and a fixed base which are respectively positioned on two sides of an output shaft of the gear box, an annular sheath is fixedly sleeved on the output shaft in the circumferential direction and the radial direction, the cover plate is provided with an arc-shaped notch, and the inner wall of the cover plate is attached to the excircle surface of the sheath; the sheath and the cover plate are separately arranged with the fixed base at intervals; the device further comprises an adjusting bolt, a via hole is formed in the cover plate, a threaded hole is formed in the fixed base, the rod portion of the adjusting bolt penetrates through the via hole and then is matched with the threaded hole, and the head portion of the adjusting bolt abuts against the cover plate. Compared with the prior art, the torque and radial force loading device of the escalator gearbox output shaft realizes loading of torque and radial force of the escalator gearbox output shaft, meets the requirements of the escalator gearbox load test, and meanwhile, the loading device is simple in structure, convenient to arrange and operate, time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of gear box testing, in particular to a gear box loading test device. Background Art

[0002] The escalator loading test is a very important part of the escalator quality inspection. In order to simulate the actual stress conditions, it is necessary to load torque and radial force on the output shaft of the escalator gearbox. This is a very mature test method. In the prior art, the main arrangement adopted is the motor + test gearbox + chain + loading gearbox + motor. The two ends of the chain are respectively mounted on the sprockets on the output shafts of the test gearbox and the loading gearbox. The motor, loading gearbox and chain are used to load torque and radial force on the output shaft of the test gearbox. The loading equipment has a complex structure, and the layout operation is cumbersome, time-consuming and labor-intensive. Utility Model Content

[0003] The utility model aims to provide a gearbox loading test device to solve the problems in the prior art that the loading equipment is complex in structure, the arrangement and operation are complicated, and the test is time-consuming and labor-intensive.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A gearbox loading test device comprises a motor and a gearbox connected in a transmission manner, and also comprises a cover plate and a fixed base respectively located on both sides of an output shaft of the gearbox, a circular sleeve is fixedly sleeved circumferentially and radially on the output shaft, an arc-shaped notch is arranged on the cover plate, and the inner wall of the notch fits with the outer circumferential surface of the sleeve; the sleeve and the cover plate are respectively arranged at intervals with the fixed base; and also comprises an adjusting bolt, a through hole is arranged on the cover plate, and a threaded hole is arranged on the fixed base, the rod of the adjusting bolt passes through the through hole and cooperates with the threaded hole, and the head of the adjusting bolt abuts on the cover plate; the connecting line of the two ends of the arc-shaped notch is perpendicular to the center line of the adjusting bolt.

[0006] In the utility model adopting the above-mentioned technical scheme, when conducting a loading test, the motor drives the output shaft of the gear box to rotate. When tightening the adjusting bolt, the cover plate will generate radial pressure on the sleeve, which is then transmitted to the output shaft. At the same time, the extrusion between the sleeve and the cover plate will generate friction perpendicular to the radial direction, thereby forming a torque loading the output shaft. In this way, the loading of torque and radial force on the output shaft of the gear box is achieved; and the change of the load on the output shaft of the gear box can be achieved by controlling the tightening torque of the adjusting bolt. Compared with the problems of complex structure of the loading equipment, cumbersome layout and operation, and time-consuming and labor-intensive loading test of the escalator gear box in the prior art, the utility model realizes the loading of torque and radial force on the output shaft of the escalator gear box and meets the requirements of the escalator gear box load test. At the same time, the loading equipment has a simple structure, convenient layout and operation, and saves time and effort.

[0007] Furthermore, the central angle of the arc-shaped notch is 120°-180°; this arrangement facilitates the insertion of the sheath into the arc-shaped notch.

[0008] Furthermore, the output shaft and the protective sleeve are connected via a key, which ensures that the protective sleeve can be fixedly sleeved on the output shaft in the circumferential and radial directions and is easy to disassemble and assemble.

[0009] Furthermore, it includes two groups of adjusting bolts, through holes and bolt holes symmetrically arranged on both sides of the output shaft; the cover plate is Ω-shaped, including a C-shaped plate fitted with the protective sleeve and supporting ears connected to the two ends of the C-shaped plate, and the through hole is opened on any of the supporting ears; with such an arrangement, by screwing two symmetrical adjusting bolts, it is easier to control the symmetry of the pressure of the cover plate on the sleeve, thereby ensuring that the combined force of the cover plate pressure on the sleeve and the output shaft is radially.

[0010] Furthermore, the two through holes are waist holes, and the length direction of the two holes is perpendicular to the length direction of the output shaft; such an arrangement reduces the alignment accuracy requirement when arranging the cover plate, making it easier to arrange.

[0011] Furthermore, it also includes a horizontal test bench, the bottom of the gear box and the fixed base are fixed on the test bench, the motor is installed on the top of the gear box, one end of the output shaft extends out of the gear box housing in the horizontal direction, and the sleeve is sleeved on the extended end of the output shaft.

[0012] The beneficial effects of the utility model are as follows: the loading of torque and radial force on the output shaft of the escalator gear box is realized, and the load test requirements of the escalator gear box are met. At the same time, the loading equipment has a simple structure, is easy to arrange and operate, and saves time and effort. The load on the output shaft of the gear box can be changed by controlling the tightening torque of the adjusting bolts. The direction of the radial force loaded on the output shaft can be changed by changing the installation position of the cover plate and the fixed base. The through hole on the cover plate is set as a waist hole, which reduces the alignment accuracy requirement when the cover plate is installed and is easier to arrange. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the utility model;

[0014] Figure 2 It is the left view of the utility model;

[0015] Figure 3 A top view of the cover.

[0016] Markings in the figure: 1-motor, 2-gearbox, 3-cover plate, 4-sleeve, 5-adjusting bolt, 6-fixing base, 7-key, 21-output shaft, 31-C-shaped plate, 32-ear, 33-through hole. DETAILED DESCRIPTION

[0017] The utility model is described in detail below in conjunction with the accompanying drawings.

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] The present invention provides a gearbox loading test device. Figure 1-Figure 3 As shown, it includes a motor 1 and a gear box 2 connected in a transmission manner, and also includes a cover plate 3 and a fixed base 6 respectively located on both sides of an output shaft 21 of the gear box 2, a circular sleeve 4 is fixedly sleeved on the output shaft 21 in a circumferential and radial direction, and a circular arc-shaped notch is provided on the cover plate 3, and its inner wall fits with the outer circumferential surface of the sleeve 4; the sleeve 4 and the cover plate 3 are respectively arranged at intervals with the fixed base 6; and also includes an adjusting bolt 5, a through hole is provided on the cover plate 3, and a threaded hole is provided on the fixed base 6, and the rod of the adjusting bolt 5 passes through the through hole. The hole 33 is matched with the threaded hole, and the head of the adjusting bolt 5 abuts against the cover plate 3; the connecting line of the two ends of the arc-shaped notch is perpendicular to the center line of the adjusting bolt 5; the central angle of the arc-shaped notch is 120°-180°; in this embodiment, the central angle of the arc-shaped notch is 180°, that is, the arc-shaped notch is semicircular; the sheath 4 and the cover plate 3 are respectively spaced from the fixed base 6, which means that: there is no direct contact between the sheath 4 and the fixed base 6, and there is no direct contact between the cover plate 3 and the fixed base 6;

[0020] The output shaft 21 and the protective sleeve 4 are connected via a key 7; in this embodiment, the key 7 is a flat key;

[0021] It includes two groups of adjusting bolts 5, through holes 33 and bolt holes symmetrically arranged on both sides of the output shaft 21; the cover plate 3 is Ω-shaped, including a C-shaped plate 31 fitted with the protective sleeve 4 and ears 32 connected to the two ends of the C-shaped plate 31, and a through hole 33 is provided on any ear 32; the fixed base 6 is in the shape of a rectangular parallelepiped as a whole, and two bolt holes corresponding to the positions of the adjusting bolts 5 are provided on the end surface of the fixed base 6 facing the cover plate 3, and a gap is left between the end surface and the cover plate 3; and an arc-shaped notch is provided on the end of the fixed base 6 facing the cover plate 3, and the arc-shaped notch is used to accommodate the protective sleeve 4, and a gap is left between the inner wall surface of the arc-shaped notch and the outer cylindrical surface of the protective sleeve 4;

[0022] The two through holes 33 are waist holes, and the length directions of the two through holes 33 are perpendicular to the length direction of the output shaft 21;

[0023] It also includes a horizontal test bench, on which the bottom of the gear box 2 and the fixed base 6 are fixed, the motor 1 is installed on the top of the gear box 2, one end of the output shaft 21 extends out of the housing of the gear box 2 in the horizontal direction, and a sheath 4 is sleeved on the extended end of the output shaft 21.

[0024] In the utility model adopting the above-mentioned technical solution, when the loading test is carried out, the motor 1 drives the output shaft 21 of the gear box 2 to rotate. When the adjusting bolt 5 is tightened, the cover plate 3 will generate radial pressure on the sleeve 4, which is then transmitted to the output shaft 21. At the same time, the extrusion between the sleeve 4 and the cover plate 3 will generate a friction force perpendicular to the radial direction, thereby forming a torque loaded on the output shaft 21. In this way, the loading of torque and radial force on the output shaft 21 of the gear box is achieved; and the load on the output shaft 21 of the gear box can be changed by controlling the tightening torque of the adjusting bolt 5. Compared with the escalator in the prior art, During the gearbox loading test, the loading equipment has the problems of complex structure, cumbersome arrangement and operation, and time-consuming and labor-intensive. The utility model realizes the loading of torque and radial force on the output shaft of the escalator gearbox, and meets the requirements of the escalator gearbox load test. At the same time, the loading equipment has a simple structure, convenient arrangement and operation, and saves time and effort. The load on the output shaft of the gearbox can be changed by controlling the tightening torque of the adjusting bolts. The direction of the radial force loaded on the output shaft can be changed by changing the installation position of the cover plate and the fixed base. The through hole on the cover plate is set as a waist hole, which reduces the alignment accuracy requirement when the cover plate is installed and is easier to arrange.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gearbox loading test device, comprising a motor (1) and a gearbox (2) in transmission connection, characterized in that: The invention also comprises a cover plate (3) and a fixed base (6) respectively located on both sides of an output shaft (21) of the gear box (2); a circular sleeve (4) is fixedly sleeved on the output shaft (21) in a circumferential and radial direction; a circular arc-shaped notch is provided on the cover plate (3); the inner wall of the notch is fitted with the outer circumferential surface of the sleeve (4); the sleeve (4) and the cover plate (3) are respectively arranged at intervals from the fixed base (6); and an adjusting bolt (5) is also included; a through hole is provided on the cover plate (3); a threaded hole is provided on the fixed base (6); a rod of the adjusting bolt (5) passes through the through hole (33) and then matches with the threaded hole, and the head of the adjusting bolt (5) abuts against the cover plate (3); and a line connecting the two ends of the circular arc-shaped notch is perpendicular to the center line of the adjusting bolt (5).

2. The gearbox loading test device according to claim 1, characterized in that: The central angle of the arc-shaped notch is 120°-180°.

3. The gearbox loading test device according to claim 1, characterized in that: The output shaft (21) and the sleeve (4) are connected via a key (7).

4. The gearbox loading test device according to claim 1, characterized in that: It comprises two groups of adjusting bolts (5), through holes (33) and bolt holes symmetrically arranged on both sides of the output shaft (21); the cover plate (3) is Ω-shaped, comprising a C-shaped plate (31) fitted with the sleeve (4) and supporting ears (32) connected to both ends of the C-shaped plate (31), and any one of the supporting ears (32) is provided with the through hole (33).

5. The gearbox loading test device according to claim 4, characterized in that: The two through holes (33) are both waist holes, and the length directions of the two through holes are perpendicular to the length direction of the output shaft (21).

6. The gearbox loading test device according to claim 1, characterized in that: It also includes a horizontal test bench, on which the bottom of the gear box (2) and the fixed base (6) are fixed, the motor (1) is mounted on the top of the gear box (2), one end of the output shaft (21) extends out of the housing of the gear box (2) in a horizontal direction, and the sleeve (4) is sleeved on the extended end of the output shaft (21).

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