Worm gear and worm center distance measuring device

Abstract

The invention relates to the technical field of measuring devices, and provides a worm gear and worm center distance measuring device which comprises a detection platform, the top of the detection platform is fixedly connected with a fixed table, the top of the detection platform is fixedly connected with a constant temperature box, and the top of the detection platform is provided with a meshing device; the constant temperature device comprises a fixing table, a meshing device is arranged in the fixing table, the meshing device comprises a motor, the side face of the motor is fixedly connected to the side face of the fixing table, a rotating shaft is fixedly connected to an output shaft of the motor, and a sliding groove is formed in the top of the detection platform. When the motor is started, the rotating shaft rotates, the collision rod collides with the collision block, the collision block slides downwards to collide with the trigger button when collided, the constant-temperature lamp is started when the trigger button is touched, the constant-temperature effect is achieved, and the problem of worm and gear center distance measurement in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring devices, and in particular to a device for measuring the center distance of a worm gear. Background Art

[0002] Worm gear transmission is a common structure in machinery. It has the advantages of compact structure, high transmission ratio, and staggered shaft transmission. However, it also has disadvantages such as high axial stress, strong tooth surface friction, high heat generation, and high lubrication requirements. Moreover, it is difficult to process due to its complex shape. In addition to ensuring that the end face modulus of the worm wheel is equal to the axial face modulus of the worm and the end face pressure angle of the worm wheel is equal to the axial face pressure angle of the worm, it is also important to ensure the meshing center distance between the two. Incorrect meshing center distance will affect the strength, heat generation, lubrication, etc. of the teeth, and thus the results and life of the worm gear transmission cannot be guaranteed.

[0003] According to a measuring device disclosed (publication number: CN 112304194 A), it includes a ruler sleeve, a length measuring device, an angle measuring device, an inner and outer diameter measuring device, and a soft ruler device. The ruler sleeve includes a horizontal ruler sleeve, a vertical ruler sleeve and a rotating shaft. The angle measuring device includes a semicircular ruler. The inner and outer diameter measuring device includes a vernier. The vernier is slidably matched with the outer surface of the horizontal ruler sleeve. The soft ruler device includes a tape measure, which is installed on the peripheral side of the rotating shaft. The measuring device of the present invention is provided with a ruler sleeve to facilitate the protection of the measuring tool. The horizontal ruler and the vertical ruler can measure data from two directions and can also detect the verticality of the object. The semicircular ruler and the semicircular ruler compound ruler adopt a nested structure to greatly save space. The inner and outer diameter measuring device can measure the data of the object in space, and the tape measure makes the measurement more flexible.

[0004] In the above application, the horizontal ruler and the vertical ruler assembly cannot be used to heat or cool the object being measured to maintain a constant temperature, which may lead to inaccurate measurement of the object being measured due to temperature, and the effect is not ideal. Summary of the invention

[0005] The present invention provides a device for measuring the center distance of a worm gear, which solves the problems raised in the above documents.

[0006] The technical solution of the present invention is as follows: The present invention is a device for measuring the center distance of a worm gear, comprising a detection platform, the top of the detection platform is fixedly connected to a fixed table, the top of the detection platform is fixedly connected to a constant temperature box, and the top of the detection platform is provided with a meshing device; The meshing device includes a motor, a side surface of the motor is fixedly connected to the side surface of the fixed platform, a rotating shaft is fixedly connected to the output shaft of the motor, a slide groove is provided on the top of the detection platform, a movable platform is slidably connected inside the slide groove, a worm is rotatably connected inside the fixed platform, a worm wheel is rotatably connected inside the movable platform, a gear is fixedly passed through the circumferential surface of the rotating shaft, a rack is fixedly connected to the top of the movable platform, and the circumferential surface of the gear meshes with the side surface of the rack.

[0007] Furthermore, the movable table is internally rotatably connected to a bearing, the circumferential surface of the worm is rotatably connected to the inside of the bearing, the side of the fixed table is fixedly connected to a sealing cover, the internal thread of the fixed table is fixed with a screw, and the side of the screw is fixedly connected to the side of the sealing cover. This design is conducive to preventing the worm from running out during measurement through the sealing cover.

[0008] Furthermore, a disassembly plate is fixedly connected to the side of the thermostatic box, a fastening screw is rotatably connected inside the thermostatic box, a side of the fastening screw is fixedly connected to the side of the disassembly plate, a baffle groove is provided on the top of the thermostatic box, a baffle is slidably connected inside the baffle groove, and a handle is fixedly connected to the side of the baffle. This design is conducive to fixing the disassembly plate by fastening screws.

[0009] Furthermore, the number of the screws is set to six and arranged in a circular array on the side of the sealing cover, and the number of the fastening screws is set to four and symmetrical along the vertical center axis of the disassembly plate. This design is conducive to preventing the sealing cover from falling off by using multiple screws.

[0010] Furthermore, a measuring device is provided on the top of the fixed platform, and the measuring device includes a connecting frame, a connecting shaft is rotatably connected inside the connecting frame, a driving bevel gear is fixedly penetrated on the circumferential surface of the rotating shaft, a driven bevel gear is fixedly penetrated on the circumferential surface of the connecting shaft, the circumferential surface of the driving bevel gear is meshed with the circumferential surface of the driven bevel gear, a supporting plate is fixedly connected to the top of the fixed platform, a screw box is fixedly connected to the side of the supporting plate, a bidirectional threaded rod is rotatably connected inside the screw box, a first belt groove is provided on the circumferential surface of the connecting shaft, and the circumference of the bidirectional threaded rod A second belt groove is provided on the surface, a belt is transmission-connected on the circumferential surface of the first belt groove, the inner side surface of the belt is on the circumferential surface of the second belt groove, a first threaded sleeve is threadedly connected on the circumferential surface of the bidirectional threaded rod, a first collision plate is fixedly connected on the circumferential surface of the first threaded sleeve, a second threaded sleeve is threadedly connected on the circumferential surface of the bidirectional threaded rod, and a second collision plate is fixedly connected on the circumferential surface of the second threaded sleeve. This design is conducive to driving the connecting shaft to rotate when the rotating shaft rotates through the transmission of the bevel gear, and driving the bidirectional threaded rod to rotate when the connecting shaft rotates through the transmission of the belt.

[0011] Furthermore, the interior of the screw box is rotatably connected to a first limit rod, the interior of the screw box is rotatably connected to a second limit rod, the top of the screw box is fixedly connected to a display screen, and the side of the fixed platform is fixedly connected to a scale plate. This design is conducive to limiting the bidirectional threaded rod through the limit rod, and displaying the measured center distance through the display screen.

[0012] Furthermore, the worm is located on the displacement track of the first collision plate, and the worm wheel is located on the displacement track of the second collision plate. This design is conducive to measuring the worm wheel through the first collision plate and the second collision plate.

[0013] Furthermore, a constant temperature device is provided on the top of the detection platform, and the constant temperature device includes a limit block, a limit groove is provided on the side of the limit block, a collision block is slidably connected inside the limit groove, a collision rod is fixedly connected to the circumferential surface of the rotating shaft, a constant temperature lamp is fixedly connected to the side of the constant temperature box, and a trigger button is provided on the side of the constant temperature lamp. Such a design is conducive to starting the constant temperature lamp by triggering the trigger button to maintain a constant temperature inside the device.

[0014] Furthermore, a spring is fixedly connected to the top of the detection platform, and one end of the spring away from the detection platform is fixedly connected to the bottom of the collision block. Such a design is conducive to resetting the collision block through the spring.

[0015] Furthermore, the collision block is located on the displacement track of the collision rod, the trigger button is located on the displacement track of the collision block, and the bottom of the collision block is elastically connected to the top of the detection platform through a spring. This design is conducive to the collision of the collision block through the collision rod, so that the collision block collides with the trigger button to start the constant temperature lamp.

[0016] The working principle and beneficial effects of the present invention are: 1. In the present invention, by the mutual cooperation among the components such as the motor, the rotating shaft, the movable table, the worm wheel, the worm, the gear and the rack inside the meshing device, when the motor is started, the rotating shaft rotates, the gear and the rack are meshed, and the movable table is moved. When the movable table moves to the left, the worm wheel on the movable table meshes with the worm in the fixed table, so that the center distance is accurate during measurement, and the effect of meshing the worm wheel and the worm is achieved.

[0017] 2. In the present invention, by the mutual cooperation among the connecting frame, connecting shaft, active bevel gear, driven bevel gear, bidirectional threaded rod and belt components inside the measuring device, it is realized that when the motor is started, the rotating shaft rotates, and the meshing of the active bevel gear and the driven bevel gear causes the rotating shaft to rotate, and the bidirectional threaded rod is driven by the belt transmission when the connecting shaft rotates. When the bidirectional threaded rod rotates, the first threaded sleeve and the second threaded sleeve on the bidirectional threaded rod move, so that the first collision plate and the second collision plate clamp the worm gear, and the calculated center distance is displayed on the display screen, thereby achieving the measurement effect.

[0018] 3. In the present invention, by the mutual cooperation between the limit block, collision block, collision rod, constant temperature lamp, trigger button and spring and other components inside the constant temperature device, when the motor is started, the shaft rotates, causing the collision rod to collide with the collision block, and the collision block slides downward and collides with the trigger button when the collision is hit, and the constant temperature lamp is started when the trigger button is touched, thereby achieving a constant temperature effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 It is a structural schematic diagram of the three-dimensional appearance of the present invention; Figure 2 It is a schematic structural diagram of a three-dimensional cross-section of the present invention from a second viewing angle; Figure 3 It is a schematic diagram of the structure of the three-dimensional cross-section of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the three-dimensional enlarged structure of A in the middle; Figure 5 For the present invention Figure 3 Schematic diagram of the three-dimensional enlarged structure of B; Figure 6 For the present invention Figure 3 Schematic diagram of the three-dimensional enlarged structure of C in the middle; Figure 7 For the present invention Figure 3 Schematic diagram of the three-dimensional enlarged structure of D in the middle; Figure 8 For the present invention Figure 3 Schematic diagram of the three-dimensional enlarged structure of E.

[0021] In the figure: 1, detection platform; 2, fixed platform; 3, constant temperature box; 4, meshing device; 41, motor; 42, rotating shaft; 43, slide; 44, movable platform; 45, worm; 46, worm wheel; 47, gear; 48, rack; 49, bearing; 410, sealing cover; 411, screw; 412, disassembly plate; 413, fastening screw; 414, baffle groove; 415, baffle; 416, handle; 5, measuring device; 51, connecting frame; 52, connecting shaft; 53, driving bevel gear; 54, driven bevel gear; 5 5. Support plate; 56. Screw box; 57. Bidirectional threaded rod; 58. First belt groove; 59. Second belt groove; 510. Belt; 511. First threaded sleeve; 512. First collision plate; 513. Second threaded sleeve; 514. Second collision plate; 515. First limit rod; 516. Second limit rod; 517. Display screen; 518. Scale plate; 6. Constant temperature device; 61. Limit block; 62. Limit groove; 63. Collision block; 64. Collision rod; 65. Constant temperature lamp; 66. Trigger button; 67. Spring. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1 like Figure 1 to Figure 8 As shown, this embodiment proposes a worm gear center distance measuring device, including a detection platform 1, a fixing table 2 is fixedly connected to the top of the detection platform 1, a constant temperature box 3 is fixedly connected to the top of the detection platform 1, and a meshing device 4 is arranged on the top of the detection platform 1; The meshing device 4 includes a motor 41, the side of the motor 41 is fixedly connected to the side of the fixed platform 2, a rotating shaft 42 is fixedly connected to the output shaft of the motor 41, a slide groove 43 is provided on the top of the detection platform 1, a movable platform 44 is slidably connected inside the slide groove 43, a worm 45 is rotatably connected inside the fixed platform 2, a worm wheel 46 is rotatably connected inside the movable platform 44, a gear 47 is fixedly passed through the circumferential surface of the rotating shaft 42, a rack 48 is fixedly connected to the top of the movable platform 44, and the circumferential surface of the gear 47 meshes with the side of the rack 48.

[0024] The movable table 44 is internally rotatably connected to a bearing 49, the circumferential surface of the worm 45 is rotatably connected to the inside of the bearing 49, the side of the fixed table 2 is fixedly connected to a sealing cover 410, the internal thread of the fixed table 2 is fixed with a screw 411, and the side of the screw 411 is fixedly connected to the side of the sealing cover 410. This design is conducive to preventing the worm 45 from running out during measurement through the sealing cover 410.

[0025] A disassembly plate 412 is fixedly connected to the side of the thermostatic box 3, a fastening screw 413 is rotatably connected inside the thermostatic box 3, the side of the fastening screw 413 is fixedly connected to the side of the disassembly plate 412, a baffle groove 414 is provided on the top of the thermostatic box 3, a baffle 415 is slidably connected inside the baffle groove 414, and a handle 416 is fixedly connected to the side of the baffle 415. This design is conducive to fixing the disassembly plate 412 by the fastening screw 413.

[0026] The number of screws 411 is set to six, and they are arranged in a circular array on the side of the sealing cover 410. The number of fastening screws 413 is set to four, and they are symmetrical with each other along the vertical center axis of the disassembly plate 412. This design is conducive to preventing the sealing cover 410 from falling off by using multiple screws 411.

[0027] A measuring device 5 is provided on the top of the fixed platform 2. The measuring device 5 includes a connecting frame 51. A connecting shaft 52 is rotatably connected inside the connecting frame 51. A driving bevel gear 53 is fixedly penetrated on the circumferential surface of the rotating shaft 42. A driven bevel gear 54 is fixedly penetrated on the circumferential surface of the connecting shaft 52. The circumferential surface of the driving bevel gear 53 meshes with the circumferential surface of the driven bevel gear 54. A supporting plate 55 is fixedly connected to the top of the fixed platform 2. A screw box 56 is fixedly connected to the side of the supporting plate 55. A bidirectional threaded rod 57 is rotatably connected inside the screw box 56. A first belt groove 58 is provided on the circumferential surface of the connecting shaft 52. A second belt groove 59 is provided on the circumferential surface of the bidirectional threaded rod 57. 9. A belt 510 is transmission-connected on the circumferential surface of the first belt groove 58, and the inner side surface of the belt 510 is on the circumferential surface of the second belt groove 59. A first threaded sleeve 511 is threadedly connected on the circumferential surface of the bidirectional threaded rod 57, and a first collision plate 512 is fixedly connected on the circumferential surface of the first threaded sleeve 511. A second threaded sleeve 513 is threadedly connected on the circumferential surface of the bidirectional threaded rod 57, and a second collision plate 514 is fixedly connected on the circumferential surface of the second threaded sleeve 513. This design is conducive to driving the connecting shaft 52 to rotate when the rotating shaft 42 rotates through the transmission of the bevel gear, and driving the bidirectional threaded rod 57 to rotate when the connecting shaft 52 rotates through the transmission of the belt 510.

[0028] The internal rotation of the screw box 56 is connected to a first limit rod 515, the internal rotation of the screw box 56 is connected to a second limit rod 516, the top of the screw box 56 is fixedly connected to a display screen 517, and the side of the fixed platform 2 is fixedly connected to a scale plate 518. This design is conducive to limiting the bidirectional threaded rod 57 through the limit rod, and displaying the measured center distance through the display screen 517.

[0029] The worm 45 is located on the displacement track of the first collision plate 512 , and the worm wheel 46 is located on the displacement track of the second collision plate 514 . This design is conducive to measuring the worm wheel 46 and the worm 45 through the first collision plate 512 and the second collision plate 514 .

[0030] A constant temperature device 6 is arranged on the top of the detection platform 1, and the constant temperature device 6 includes a limit block 61, a limit groove 62 is provided on the side of the limit block 61, a collision block 63 is slidably connected inside the limit groove 62, a collision rod 64 is fixedly connected to the circumferential surface of the rotating shaft 42, a constant temperature lamp 65 is fixedly connected to the side of the constant temperature box 3, and a trigger button 66 is arranged on the side of the constant temperature lamp 65. This design is conducive to starting the constant temperature lamp 65 by triggering the trigger button 66 to maintain a constant temperature inside the device.

[0031] A spring 67 is fixedly connected to the top of the detection platform 1 , and one end of the spring 67 away from the detection platform 1 is fixedly connected to the bottom of the collision block 63 . This design is conducive to resetting the collision block 63 through the spring 67 .

[0032] The collision block 63 is located on the displacement track of the collision rod 64, the trigger button 66 is located on the displacement track of the collision block 63, and the bottom of the collision block 63 is elastically connected to the top of the detection platform 1 through a spring 67. This design is conducive to the collision of the collision block 63 through the collision rod 64, so that the collision block 63 collides with the trigger button 66, and the constant temperature lamp 65 is started.

[0033] A specific application of this embodiment is: when measurement is required, the worm wheel 46 and worm 45 need to be meshed first to ensure that the measurement is accurate. First, pull the handle 416 to open the baffle 415, place the worm wheel 46 in the movable table 44, place the worm 45 in the fixed table 2, and then start the motor 41. When the motor 41 is started, the shaft 42 on the output shaft of the motor 41 rotates clockwise. When the shaft 42 rotates clockwise, the gear 47 on the shaft 42 meshes with the rack 48 on the movable table 44, causing the movable table 44 to slide and the worm wheel 46 and worm 45 to mesh, so as to ensure accurate measurement. When the measurement is completed, the shaft 42 rotates counterclockwise, the gear 47 on the shaft 42 meshes with the rack 48 on the movable table 44, causing the movable table 44 to slide and the worm wheel 46 and worm 45 to separate.

[0034] After the meshing is completed, it is necessary to measure the center distance of the worm wheel 46 and the worm 45. First, the motor 41 is started. When the motor 41 is started, the shaft 42 on the output shaft of the motor 41 rotates clockwise. When the shaft 42 rotates clockwise, the active bevel gear 53 on the shaft 42 meshes with the driven bevel gear 54 on the connecting shaft 52, so that the connecting shaft 52 rotates counterclockwise. When the connecting shaft 52 rotates counterclockwise, the belt 510 is driven to drive the bidirectional threaded rod 57 to rotate counterclockwise when the connecting shaft 52 rotates counterclockwise. When the bidirectional threaded rod 57 rotates counterclockwise, the first threaded sleeve 511 and the second threaded sleeve 513 on the bidirectional threaded rod 57 move inward. When the first threaded sleeve 511 and the second threaded sleeve 513 move inward, the first collision plate 512 and the second collision plate 514 on the circumferential surfaces of the first threaded sleeve 511 and the second threaded sleeve 513 impact the worm wheel 46 and the worm 45. The measurement is performed, and the data after the measurement is calculated is displayed on the display screen 517. After the measurement is completed, the worm wheel 46 and the worm 45 need to be taken out. When the rotating shaft 42 rotates counterclockwise, the active bevel gear 53 on the rotating shaft 42 meshes with the driven bevel gear 54 on the connecting shaft 52, so that the connecting shaft 52 rotates clockwise. When the connecting shaft 52 rotates clockwise, the belt 510 is used to drive the bidirectional threaded rod 57 to rotate clockwise when the connecting shaft 52 rotates clockwise. When the bidirectional threaded rod 57 rotates clockwise, the first threaded sleeve 511 and the second threaded sleeve 513 on the bidirectional threaded rod 57 move outward. When the first threaded sleeve 511 and the second threaded sleeve 513 move outward, the first collision plate 512 and the second collision plate 514 on the circumferential surfaces of the first threaded sleeve 511 and the second threaded sleeve 513 loosen the worm wheel 46 and the worm 45. At this time, the worm wheel 46 and the worm 45 can be taken out.

[0035] In order to prevent temperature from causing measurement errors of the worm gear 46 and worm 45, it is necessary to ensure constant temperature during measurement. First, start the motor 41. When the motor 41 is started, the shaft 42 on the output shaft of the motor 41 rotates clockwise. When the shaft 42 rotates clockwise, the collision rod 64 on the shaft 42 collides with the collision block 63. When the collision block 63 is collided, it moves downward and collides with the trigger button 66. When the trigger button 66 is touched, the constant temperature lamp 65 is turned on to ensure the measured temperature. When the shaft 42 rotates counterclockwise, the collision rod 64 on the shaft 42 collides with the collision block 63. When the collision block 63 is collided, it moves downward and collides with the trigger button 66. When the trigger button 66 is touched, the constant temperature lamp 65 is turned on to ensure the measured temperature.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for measuring the center distance of a worm gear, characterized in that: It comprises a detection platform (1), the top of the detection platform (1) is fixedly connected to a fixing table (2), the top of the detection platform (1) is fixedly connected to a constant temperature box (3), and the top of the detection platform (1) is provided with a meshing device (4); The meshing device (4) comprises a motor (41), the side of the motor (41) is fixedly connected to the side of the fixed platform (2), the output shaft of the motor (41) is fixedly connected to a rotating shaft (42), the top of the detection platform (1) is provided with a slide groove (43), the interior of the slide groove (43) is slidably connected to a movable platform (44), the interior of the fixed platform (2) is rotatably connected to a worm (45), the interior of the movable platform (44) is rotatably connected to a worm wheel (46), a gear (47) is fixedly passed through the circumferential surface of the rotating shaft (42), the top of the movable platform (44) is fixedly connected to a rack (48), and the circumferential surface of the gear (47) meshes with the side of the rack (48).

2. A worm gear center distance measuring device according to claim 1, characterized in that: The movable platform (44) is rotatably connected to a bearing (49) inside, the circumferential surface of the worm (45) is rotatably connected to the inside of the bearing (49), the side of the fixed platform (2) is fixedly connected to a sealing cover (410), the internal thread of the fixed platform (2) is fixedly connected to a screw (411), and the side of the screw (411) is fixedly connected to the side of the sealing cover (410).

3. A worm gear center distance measuring device according to claim 2, characterized in that: A disassembly plate (412) is fixedly connected to the side of the thermostatic box (3); a fastening screw (413) is rotatably connected inside the thermostatic box (3); a side of the fastening screw (413) is fixedly connected to the side of the disassembly plate (412); a baffle groove (414) is provided on the top of the thermostatic box (3); a baffle (415) is slidably connected inside the baffle groove (414); and a handle (416) is fixedly connected to the side of the baffle (415).

4. A worm gear center distance measuring device according to claim 3, characterized in that: The number of the screws (411) is set to six and arranged in a circumferential array on the side of the sealing cover (410), and the number of the fastening screws (413) is set to four and arranged symmetrically along the vertical center axis of the disassembly plate (412).

5. A worm gear center distance measuring device according to claim 4, characterized in that: A measuring device (5) is arranged on the top of the fixed platform (2), and the measuring device (5) comprises a connecting frame (51), a connecting shaft (52) is rotatably connected inside the connecting frame (51), a driving bevel gear (53) is fixedly passed through the circumferential surface of the rotating shaft (42), a driven bevel gear (54) is fixedly passed through the circumferential surface of the connecting shaft (52), the circumferential surface of the driving bevel gear (53) meshes with the circumferential surface of the driven bevel gear (54), a supporting plate (55) is fixedly connected to the top of the fixed platform (2), a screw box (56) is fixedly connected to the side of the supporting plate (55), a bidirectional threaded rod (57) is rotatably connected inside the screw box (56), and the connecting shaft (51) is fixedly connected to the circumferential surface of the rotating shaft (42). A first belt groove (58) is provided on the circumferential surface of the bidirectional threaded rod (52), a second belt groove (59) is provided on the circumferential surface of the bidirectional threaded rod (57), a belt (510) is transmission-connected to the circumferential surface of the first belt groove (58), the inner side surface of the belt (510) is on the circumferential surface of the second belt groove (59), a first threaded sleeve (511) is threadedly connected to the circumferential surface of the bidirectional threaded rod (57), a first collision plate (512) is fixedly connected to the circumferential surface of the first threaded sleeve (511), a second threaded sleeve (513) is threadedly connected to the circumferential surface of the bidirectional threaded rod (57), and a second collision plate (514) is fixedly connected to the circumferential surface of the second threaded sleeve (513).

6. A worm gear center distance measuring device according to claim 5, characterized in that: The screw box (56) is rotatably connected to a first limit rod (515) inside, the screw box (56) is rotatably connected to a second limit rod (516) inside, the top of the screw box (56) is fixedly connected to a display screen (517), and the side of the fixed platform (2) is fixedly connected to a scale plate (518).

7. A worm gear center distance measuring device according to claim 6, characterized in that: The worm (45) is located on a displacement track of the first collision plate (512), and the worm wheel (46) is located on a displacement track of the second collision plate (514).

8. A worm gear center distance measuring device according to claim 7, characterized in that: A constant temperature device (6) is arranged on the top of the detection platform (1), and the constant temperature device (6) comprises a limit block (61), a limit groove (62) is provided on the side of the limit block (61), a collision block (63) is slidably connected inside the limit groove (62), a collision rod (64) is fixedly connected to the circumferential surface of the rotating shaft (42), a constant temperature lamp (65) is fixedly connected to the side of the constant temperature box (3), and a trigger button (66) is arranged on the side of the constant temperature lamp (65).

9. A worm gear center distance measuring device according to claim 8, characterized in that: A spring (67) is fixedly connected to the top of the detection platform (1), and one end of the spring (67) away from the detection platform (1) is fixedly connected to the bottom of the collision block (63).

10. A worm gear center distance measuring device according to claim 9, characterized in that: The collision block (63) is located on the displacement track of the collision rod (64), the trigger button (66) is located on the displacement track of the collision block (63), and the bottom of the collision block (63) is elastically connected to the top of the detection platform (1) via a spring (67).

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