A trapezoidal thread wear detection device

Abstract

The present invention provides a trapezoidal thread wear detection device, including a lifting rod, a positioning assembly and a measuring assembly; the lifting rod is provided with an external thread for connecting the positioning assembly and the measuring assembly; the positioning assembly includes a positioning workbench, the positioning workbench is screwed to the lifting rod along the longitudinal direction, and the positioning workbench is sleeved with a positioning device in the transverse direction, and the positioning device is used to locate the position of the lifting rod between two adjacent trapezoidal threads; the measuring assembly is sleeved on the lifting rod and arranged below the positioning assembly, and the two ends of the measuring assembly are respectively pressed against the inner side surfaces of two adjacent trapezoidal threads, and are used to measure the wear of the trapezoidal threads. The detection device in the present invention is accurately positioned. After the position and height of the detection device are positioned, it only needs to be moved along the spiral line to detect the wear of the thread. The operation is simple, a lot of time is saved, and no cumbersome equipment disassembly is required.

Description

Technical Field

[0001] The invention belongs to the field of trapezoidal thread detection, and in particular relates to a trapezoidal thread wear detection device. Background Art

[0002] In metallurgical equipment, some large-tonnage or high-torque transmission equipment uses trapezoidal thread screws for transmission, which has the advantages of stable transmission and large torque transmission. However, the trapezoidal thread will wear during use. The wear of the thread may significantly reduce the strength of the threaded connection, which will affect the transmission stability in the later stage. Therefore, it is necessary to detect the wear degree of the trapezoidal thread.

[0003] In the prior art, the wear degree of trapezoidal threads can be detected by machine tool metering. The equipment needs to be disassembled during the detection process. Due to the large size of metallurgical equipment and cumbersome disassembly, the detection of trapezoidal threads is costly, time-consuming and labor-intensive, and affects the working efficiency of the equipment.

[0004] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a trapezoidal thread wear detection device, which moves along the spiral line of the thread and is used for online detection of the wear of the trapezoidal thread, so as to at least solve the problems of cumbersome disassembly of the equipment and high detection cost when detecting the degree of wear of the trapezoidal thread in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A trapezoidal thread wear detection device, the detection device comprising a lifting rod, a positioning assembly and a measuring assembly;

[0008] The lifting rod is provided with an external thread for connecting the positioning assembly and the measuring assembly;

[0009] The positioning assembly comprises a positioning workbench, the positioning workbench is screwed onto the lifting rod in the longitudinal direction, and a positioning device is sleeved on the positioning workbench in the transverse direction, and the positioning device is used to position the lifting rod between two adjacent trapezoidal threads;

[0010] The measuring component is sleeved on the lifting rod and arranged below the positioning component. The two ends of the measuring component respectively abut against the inner side surfaces of two adjacent trapezoidal threads to measure the wear of the trapezoidal threads.

[0011] As a preferred embodiment of the trapezoidal thread wear detection device as described above, the positioning device includes a positioning rod, one end of which is transversely sleeved in the positioning workbench, and the length of the positioning rod extending into the positioning workbench is adjustable;

[0012] The other end of the positioning rod is connected to a positioning plate, and the positioning plate clamps the two side surfaces of the trapezoidal thread and is used for continuous positioning of the detection device during the detection process along the spiral line of the trapezoidal thread.

[0013] As a preferred embodiment of the trapezoidal thread wear detection device as described above, a first rotating nut is threadedly connected to the positioning rod, the first rotating nut is engaged with a stopper at a lateral port of the positioning workbench, and is rotatably arranged on the positioning workbench;

[0014] A first cavity is formed along the length direction of one end of the positioning rod away from the positioning workbench, the first cavity is used to accommodate at least a part of the positioning plate, and a first stop plate is provided at the outer edge of the opening of the first cavity;

[0015] Preferably, the first stop plate and the positioning rod are integrally formed.

[0016] As the trapezoidal thread wear detection device described above, as a preferred embodiment, a second stop plate is provided at one end of the positioning plate, and the other end is sleeved in the first cavity; the length of the positioning plate extending into the first cavity is adjustable, and the second stop plate and the first stop plate are clamped on the inner and outer side surfaces of the trapezoidal thread;

[0017] Preferably, a first slot is formed on the outer wall of the first cavity and extends through the end surface of the outer wall along the length direction;

[0018] The positioning plate is provided with a first guide key along the length direction, the first guide key is clamped in the first clamping slot, and the positioning plate slides in the first clamping slot through the first guide key to adjust the width between the second stop plate and the first stop plate;

[0019] More preferably, the first guide key is provided with a plurality of bolt holes spaced apart along the length direction, and bolts are passed through the bolt holes to fasten the positioning plate and the positioning rod to position the width between the second stop plate and the first stop plate;

[0020] More preferably, the second stop plate and the positioning plate are formed integrally.

[0021] The trapezoidal thread wear detection device as described above is a preferred embodiment.

[0022] The measuring assembly comprises a measuring workbench and a measuring device;

[0023] The measuring workbench comprises a connecting part and a measuring part; the connecting part is sleeved on the lifting rod, and the height of the measuring assembly on the lifting rod is adjusted by the connecting part; two measuring parts are provided, and the two measuring parts are respectively provided at the two lateral ends of the connecting part;

[0024] The measuring device comprises a measuring rod and a measuring head, one end of the measuring rod is transversely sleeved in the measuring part, and the length of the measuring rod extending into the measuring part is adjustable; a back plate is arranged at one end of the measuring rod away from the measuring part, the back plate is arranged along the length direction of the measuring rod, and a scale value is arranged on the back plate;

[0025] The measuring head is connected to one end of the measuring rod away from the measuring part, at least a part of the measuring head is slidably sleeved inside the measuring rod, and one end of the measuring head away from the measuring rod is pressed against the inner side surfaces of two adjacent trapezoidal threads, and the scale value on the back plate is indicated by the movement of the measuring head, so as to measure the wear of the trapezoidal threads;

[0026] Preferably, the connecting portion and the measuring portion are integrally formed.

[0027] As a preferred embodiment of the trapezoidal thread wear detection device as described above, a positioning nut is rotatably connected above the connecting portion, and the positioning nut is threaded on the lifting rod to adjust and position the height position of the measuring workbench on the lifting rod.

[0028] As a preferred embodiment of the trapezoidal thread wear detection device as described above, a second rotating nut is threadedly connected to the measuring rod, the second rotating nut is engaged with a stopper at the port of the measuring part, and is rotatably arranged on the measuring workbench;

[0029] A second cavity is formed at one end of the measuring rod away from the measuring portion, and the second cavity is used to accommodate the measuring head.

[0030] The trapezoidal thread wear detection device as described above is, as a preferred embodiment, a reset spring is arranged between the measuring head and the measuring rod, one end of the reset spring is fixedly connected to the bottom end of the second cavity, and the other end is fixedly connected to an end of the measuring head close to the measuring rod; the reset spring is used to automatically adjust the length of the measuring head extending into the measuring rod.

[0031] As a preferred embodiment of the trapezoidal thread wear detection device described above, a second inner groove is provided on the inner wall of the second cavity in parallel along the length direction, a second outer groove is provided on the outer wall of the second cavity in parallel along the length direction, and a slot is provided on the outer wall corresponding to the second outer groove;

[0032] The measuring head is provided with a second guide key and a raised base, the second guide key is connected with the second inner slot in a sliding cooperation manner, and the base is free to move along the length direction of the slot hole.

[0033] The trapezoidal thread wear detection device as described above is a preferred embodiment.

[0034] The back plate is mounted on the second external card slot;

[0035] A pointer is installed on the base, and the pointer indicates the scale value on the back plate as the base moves, so as to measure the wear value of the trapezoidal thread.

[0036] Compared with the closest prior art, the technical solution provided by the present invention has the following excellent effects:

[0037] The detection device in the present invention mainly includes a lifting rod, a positioning workbench and a measuring workbench. The height of the positioning workbench on the lifting rod can be freely adjusted. A positioning rod is connected to one side of the positioning workbench. A thread is provided on the positioning rod. The length of the positioning rod is adjusted by a first rotating nut. The positioning plate on the positioning rod is used to clamp the two side surfaces of the trapezoidal thread. The trapezoidal thread is clamped by adjusting the width of the positioning plate, thereby positioning the detection device between the pitches of two adjacent trapezoidal threads.

[0038] In the present invention, a positioning nut is arranged above the measuring workbench, and the height of the measuring workbench on the lifting rod is adjusted and the position of the measuring workbench is locked by the positioning nut, thereby ensuring the accuracy of the position of the measuring workbench; two measuring rods are installed on the measuring workbench, one end of the measuring rod is provided with a thread, and the length of the measuring rod is adjusted by a second rotating nut, and the other end of the measuring rod is connected to a measuring head, and a reset spring is also arranged between the measuring head and the measuring rod, and the position of the measuring head is automatically adjusted by the reset spring.

[0039] During the movement of the detection device along the spiral line of the thread, the position of the detection device between the pitches of two adjacent trapezoidal threads remains unchanged. After the height of the measuring workbench is fixed, only the position of the measuring head changes with the change of thread wear. A back plate is installed on the measuring rod, and a scale value is set on the back plate. A pointer is installed on the measuring head. When the detection device is installed, the back plate is moved so that the scale indicated by the pointer is zero scale, and then the detection device is moved along the spiral line of the thread, and the wear condition of the thread is detected by the indication of the pointer.

[0040] The detection device in the present invention is accurately positioned. After the position and height of the detection device are located, the wear of the thread can be detected by moving it along the spiral line. The operation is simple, a lot of time is saved, and there is no need for cumbersome equipment disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0042] Figure 1 It is a structural schematic diagram of a detection device in a specific embodiment of the present invention;

[0043] Figure 2 It is a schematic diagram of the assembly structure of the positioning device in a specific embodiment of the present invention;

[0044] Figure 3 It is a structural schematic diagram of a measuring workbench in a specific embodiment of the present invention;

[0045] Figure 4 It is a structural schematic diagram of a measuring rod in a specific embodiment of the present invention;

[0046] Figure 5 It is a structural schematic diagram of a measuring head in a specific embodiment of the present invention;

[0047] Figure 6 It is a schematic diagram of the actual application of the detection device in a specific embodiment of the present invention.

[0048] In the figure: 1. lifting rod; 2. positioning workbench; 3. positioning rod; 31. first rotating nut; 32. first cavity; 321. first slot; 33. first stop plate; 4. positioning plate; 41. first guide key; 411. bolt hole; 42. second stop plate; 5. measuring workbench; 51. connecting part; 511. positioning nut; 52. measuring part; 6. measuring rod; 61. second rotating nut; 62. second cavity; 621. second inner slot; 6211. back plate; 622. second outer slot; 623. slot; 7. measuring head; 71. second guide key; 72. base; 721. pointer. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0050] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0051] The present invention provides a trapezoidal thread wear detection device, which mainly comprises a lifting rod 1, a positioning table 2 and a measuring table 5. The height of the positioning table 2 on the lifting rod 1 can be freely adjusted. A positioning rod 3 is connected to one side of the positioning table 2. The positioning rod 3 is provided with a thread. The length of the positioning rod 3 extending out of the positioning table 2 is adjusted by a first rotating nut 31. The positioning plate 4 on the positioning rod 3 is used to clamp the two side surfaces of the trapezoidal thread. The trapezoidal thread is clamped by adjusting the width of the positioning plate 4, so as to locate the position of the detection device between the pitches of two adjacent trapezoidal threads. A positioning nut 511 is arranged above the measuring table 5. The height of the measuring table 5 on the lifting rod 1 is adjusted by the positioning nut 511 and the position of the measuring table 5 is locked, thereby ensuring the accuracy of the position of the measuring table 5. Two measuring rods 6 are installed on the measuring table 5. One end of the measuring rod 6 is provided with a thread, and the length of the measuring rod 6 extending out of the measuring workbench 5 is adjusted by a second rotating nut 61. The other end of the measuring rod 6 is connected to a measuring head 7, and a reset spring is also provided between the measuring head 7 and the measuring rod 6, and the position of the measuring head 7 is automatically adjusted by the reset spring; during the movement of the detection device along the spiral line of the thread, the position of the detection device between the pitches of two adjacent trapezoidal threads remains unchanged, and after the height of the measuring workbench 5 is fixed, only the position of the measuring head 7 changes with the change of thread wear; a back plate 6211 is installed on the measuring rod 6, and a scale value is set on the back plate 6211, and a pointer 721 is installed on the measuring head 7. When the detection device is installed, the back plate 6211 is moved so that the scale indicated by the pointer 721 is zero scale, and then the detection device is moved along the spiral line of the thread, and the wear of the thread is detected by the indication of the pointer 721.

[0052] like Figure 1 to Figure 6 As shown, the present invention provides a trapezoidal thread wear detection device, which includes a lifting rod 1, a positioning component and a measuring component.

[0053] like Figure 1 It is a schematic diagram of the structure of the detection device in a specific embodiment of the present invention. The lifting rod 1 is provided with an external thread for connecting the positioning component and the measuring component.

[0054] In a specific embodiment of the present invention, a handle is provided at the top of the lifting rod 1. By holding the handle, the detection device moves along the spiral line of the trapezoidal thread to detect the wear condition of the trapezoidal thread.

[0055] Preferably, the handle and the lifting rod 1 are integrally formed.

[0056] The positioning assembly includes a positioning table 2, which is screwed to the lifting rod 1 in the longitudinal direction, and a positioning device is sleeved on the positioning table 2 in the transverse direction, and the positioning device is used to position the lifting rod 1 between two adjacent trapezoidal threads. The trapezoidal thread structure includes a thread with a trapezoidal cross-sectional shape, the cross-section of a standard trapezoidal thread is an isosceles trapezoid, the thread angle is 30°, the thread includes a top surface, two side surfaces and a valley, and the detection device is arranged on the screw or lead screw between the two trapezoidal threads, and the lifting rod 1 is positioned between the pitches of the two trapezoidal threads through the positioning device, and is used to monitor the wear of the side surfaces of the trapezoidal threads.

[0057] In a specific embodiment of the present invention, a threaded hole is longitudinally opened inside the positioning workbench 2, which is screwed to the external thread on the lifting rod 1 through the threaded hole, and the height of the positioning workbench 2 on the lifting rod 1 and the position of the positioning workbench 2 can be adjusted by rotation; in a specific embodiment, a first accommodating cavity is transversely opened inside the positioning workbench 2, and the first accommodating cavity is used to accommodate the positioning device, and the length of the positioning device extending into the first accommodating cavity can be freely adjusted and positioned.

[0058] In another specific embodiment, a second positioning nut (not shown in the figure) is rotatably connected above the positioning workbench 2. The specific structural schematic diagram of the second positioning nut is shown in the attached figure. Figure 1 The positioning nut 511 in the figure; a connecting piece is welded on the positioning workbench 2, and the second positioning nut is rotatably connected to the connecting piece. One end of the second positioning nut is screwed on the lifting rod 1, and the other end is rotatably connected to the positioning workbench 1 through the connecting piece. The height position of the positioning workbench on the lifting rod 1 is fine-tuned by screwing the second positioning nut.

[0059] In a specific embodiment of the present invention, the positioning device includes a positioning rod 3, one end of which is transversely sleeved in the positioning workbench 2, and the length of the positioning rod 3 extending into the positioning workbench 2 is adjustable; that is, the positioning rod 3 is sleeved in the first accommodating cavity of the positioning workbench 2, and the length of the positioning rod 3 extending into the first accommodating cavity can be freely adjusted.

[0060] The other end of the positioning rod 3 is connected to a positioning plate 4, which clamps the two side surfaces of the trapezoidal thread and is used for continuous positioning of the detection device during the detection process along the spiral line of the trapezoidal thread.

[0061] In a specific embodiment of the present invention, a first rotating nut 31 is threadedly connected to the positioning rod 3, the first rotating nut 31 is engaged with a stopper at a lateral port of the positioning workbench 2, and is rotatably disposed on the positioning workbench 2, and the length of the positioning rod 3 extending into the positioning workbench 2 is positioned and adjusted by the first rotating nut 31. That is, the first rotating nut 31 only rotates but does not move linearly, and its rotational movement drives the positioning rod 3 to move linearly, thereby adjusting the length of the positioning rod 3 extending into the positioning workbench 2.

[0062] The positioning rod 3 is sleeved on the positioning workbench 2, and the length of the positioning rod 3 extending into the positioning workbench 2 is adjusted according to the length required in actual application. When it is necessary to increase the length of the positioning rod 3 extending into the positioning workbench 2, the first rotating nut 31 is rotated in the direction away from the positioning workbench 2, so that the positioning rod 3 is pushed into the positioning workbench 2 to the required length, and then the first rotating nut 31 on the positioning rod 3 is adjusted so that the first rotating nut 31 just stops and cooperates with the port of the positioning workbench 2, ensuring that the length of the positioning rod 3 extending into the positioning workbench 2 remains unchanged; when it is necessary to shorten the length of the positioning rod 3 extending into the positioning workbench 2, the first rotating nut 31 is rotated in the direction close to the positioning workbench 2, the positioning rod 3 is moved in the direction away from the positioning workbench 2 to the required length, and then the first rotating nut 31 on the positioning rod 3 is adjusted so that the first rotating nut 31 just stops and cooperates with the port of the positioning workbench 2, ensuring that the length of the positioning rod 3 extending into the positioning workbench 2 remains unchanged.

[0063] like Figure 2 The figure is a schematic diagram of the assembly structure of the positioning device in a specific embodiment of the present invention. A first cavity 32 is provided along the length direction at one end of the positioning rod 3 away from the positioning workbench 2. The first cavity 32 is used to accommodate at least a portion of the positioning plate 4. A first stop plate 33 is provided at the outer edge of the opening of the first cavity 32.

[0064] Preferably, the first stop plate 33 and the positioning rod 3 are integrally formed.

[0065] In a specific embodiment of the present invention, a second stop plate 42 is provided at one end of the positioning plate 4, and the other end is sleeved in the first cavity 32; the length of the positioning plate 4 extending into the first cavity 32 is adjustable, and the second stop plate 42 and the first stop plate 33 are clamped on the inner and outer sides of the trapezoidal thread.

[0066] Among them, adjusting the length of the positioning plate 4 extending into the first cavity 32 is actually to adjust the distance between the first stop plate 33 and the second stop plate 42, clamp the trapezoidal thread between the first stop plate 33 and the second stop plate 42, and then adjust the length of the positioning plate 4 extending into the first cavity 32 so that the first stop plate 33 and the second stop portion clamp the trapezoidal thread.

[0067] Preferably, a first slot 321 is provided on the outer wall of the first cavity 32 along the length direction from the end surface of the outer wall. The first slot 321 penetrates the outer wall in the radial direction and has an opening at one end close to the positioning plate. Figure 2 The left end of .

[0068] The positioning plate 4 is provided with a first guide key 41 along the length direction. The first guide key 41 is clamped in the first clamping groove 321 . The positioning plate 4 slides in the first clamping groove 321 through the first guide key 41 to adjust the width between the second stop plate 42 and the first stop plate 33 .

[0069] More preferably, the first guide key 41 is provided with a plurality of bolt holes 411 spaced apart along the length direction, and the bolts pass through the bolt holes 411 to fasten the positioning plate 4 and the positioning rod 3, thereby positioning the width between the second stop plate 42 and the first stop plate 33; wherein, the bolts installed on the bolt holes 411 play a positioning role and can be used to fine-tune the spacing between the second stop plate 42 and the first stop plate 33; the hexagonal nut above the bolt is clamped on the outer edge of the first clamping groove 321, and the width between the second stop plate 42 and the first stop plate 33 can be adjusted by loosening the bolt. After tightening the bolt, it is equivalent to fixing the position of the positioning plate 4 and the positioning rod 3, that is, positioning the width between the second stop plate 42 and the first stop plate 33.

[0070] More preferably, the second stop plate 42 and the positioning plate 4 are formed integrally.

[0071] The measuring assembly is sleeved on the lifting rod 1 and arranged below the positioning assembly. The two ends of the measuring assembly are respectively pressed against the inner side surfaces of two adjacent trapezoidal threads to measure the wear of the trapezoidal threads.

[0072] In a specific embodiment of the present invention, the measuring assembly includes a measuring workbench 5 and a measuring device.

[0073] like Figure 3 The figure is a schematic diagram of the structure of the measuring workbench in a specific embodiment of the present invention, the measuring workbench 5 includes a connecting portion 51 and a measuring portion 52; the connecting portion 51 is sleeved on the lifting rod 1, and the height of the measuring component on the lifting rod 1 is adjusted by the connecting portion 51; there are two measuring portions 52, and the two measuring portions 52 are respectively arranged at the left and right ends of the connecting portion 51; in actual application, the connecting portion 51 is provided with a longitudinal hole in the longitudinal direction, and the measuring portion 52 is provided with a transverse hole in the transverse direction, and the longitudinal hole and the transverse holes on both sides may be connected or not connected.

[0074] Preferably, the connecting portion 51 and the measuring portion 52 are integrally formed.

[0075] The measuring device includes a measuring rod 6 and a measuring head 7. One end of the measuring rod 6 is transversely sleeved in the measuring part 52, and the length of the measuring rod 6 extending into the measuring part 52 is adjustable. A back plate 6211 is provided at one end of the measuring rod 6 away from the measuring part 52. The back plate 6211 is arranged along the length direction of the measuring rod 6, and scale values ​​are provided on the back plate 6211.

[0076] The measuring head 7 is connected to one end of the measuring rod 6 away from the measuring part 52. At least a part of the measuring head 7 is slidably sleeved inside the measuring rod 6. One end of the measuring head 7 away from the measuring rod 6 is pressed against the inner side surfaces of two adjacent trapezoidal threads. The movement of the measuring head 7 indicates the scale value on the back plate 6211, which is used to measure the wear condition of the trapezoidal thread.

[0077] In a specific embodiment of the present invention, a positioning nut 511 is rotatably connected above the connecting portion 51, and the positioning nut 511 is screwed onto the lifting rod 1, and is used to adjust and position the height position of the measuring workbench 5 on the lifting rod 1. Among them, a connecting piece (not marked in the figure) is welded on the measuring workbench 5, and the positioning nut 511 is rotatably connected to the connecting piece. One end of the positioning nut 511 is screwed onto the lifting rod 1, and the other end is connected to the measuring workbench 5 through the connecting piece. By adjusting the position of the positioning nut 511 on the lifting rod 1, the measuring workbench 5 is driven to move upward or downward on the lifting rod 1. That is, when the positioning nut 511 rotates, the measuring workbench 5 does not rotate with the positioning nut 511. When the positioning nut 511 moves along the lifting rod 1, it will drive the measuring workbench 5 to move along the lifting rod 1.

[0078] In a specific embodiment of the present invention, the measuring rod 6 includes a second threaded section and a second polished rod section. The outer surface of the second threaded section is provided with an external thread. The outer surface of the second polished rod section has a smooth structure. The second threaded section is sleeved in the measuring part 52 .

[0079] In a specific embodiment of the present invention, a second rotating nut 61 is screwed onto the measuring rod 6, and the second rotating nut 61 is engaged with the port of the measuring part 52 and is rotatably arranged on the measuring workbench 5. When in use, the second rotating nut 31 only rotates and does not move linearly, and its rotational movement drives the measuring rod 6 to move linearly, thereby adjusting the length of the measuring rod 3 extending into the measuring part 52.

[0080] In actual applications, the length of the measuring rod 6 extending into the measuring part 52 can be freely adjusted. When the length of the measuring rod 6 extending into the measuring part 52 needs to be increased, the second rotating nut is directly turned to move the measuring rod 6 toward the measuring part 52; when the length of the measuring rod 6 extending into the measuring part 52 needs to be shortened, the second rotating nut 61 is rotated toward the measuring part 52, and the measuring rod 6 is moved to the desired length in the direction away from the measuring part 52, and then the second rotating nut 61 on the measuring rod 6 is adjusted so that the second rotating nut 61 just stops and fits into the port of the measuring part 52, thereby ensuring that the length of the measuring rod 6 extending into the measuring part 52 remains unchanged.

[0081] like Figure 4The figure shows a schematic diagram of the structure of the measuring rod in a specific embodiment of the present invention, wherein a second cavity 62 is provided at one end of the measuring rod 6 away from the measuring portion 52, and the second cavity 62 is used to accommodate the measuring head 7. That is, the second straight section of the measuring rod 6 is provided with the second cavity 62, and the opening of the second cavity 62 is located at the end of the measuring rod 6 away from the measuring portion 52, and at least a part of the measuring head 7 is accommodated in the second cavity 62.

[0082] Therein, a boss is provided at the bottom of the second cavity 62 of the measuring rod 6 .

[0083] like Figure 5 The figure is a schematic diagram of the structure of the measuring head in a specific embodiment of the present invention. The measuring head 7 includes a top and a bottom. The top is in a triangular cone shape and the bottom is in a cylindrical shape. A dome is provided on the top, and the dome is used to press against the side of the trapezoidal thread. The bottom is sleeved in the second cavity 62, and a bottom tube is also provided on the bottom.

[0084] In a specific embodiment of the present invention, a reset spring is arranged between the measuring head 7 and the measuring rod 6, one end of the reset spring is fixedly connected to the bottom end of the second cavity 62, and the other end is fixedly connected to one end of the measuring head 7 close to the measuring rod 6; the reset spring is used to automatically adjust the length of the measuring head 7 extending into the measuring rod 6.

[0085] In practical applications, one end of the return spring is disposed on the bottom tube, and the other end is disposed on the boss at the bottom of the second cavity 62 .

[0086] In a specific embodiment of the present invention, a second inner slot 621 is provided on the inner wall of the second cavity 62 in parallel along the length direction, a second outer slot 622 is provided on the outer wall of the second cavity 62 in parallel along the length direction, and a slot hole 623 is provided on the outer wall corresponding to the second outer slot 622.

[0087] The measuring head 7 is provided with a second guide key 71 and a protruding base 72 . The second guide key 71 is connected to the second inner slot 621 in a sliding fit, and the base 72 is free to move along the length direction of the slot 623 .

[0088] In a specific embodiment of the present invention, a back plate 6211 is mounted on the second external card slot 622 , and scale values ​​are arranged on the back plate 6211 .

[0089] A pointer 721 is installed in the base 72. The pointer 721 indicates the scale value on the back plate 6211 as the base 72 moves, and is used to measure the wear value of the trapezoidal thread.

[0090] In order to better understand the trapezoidal thread wear detection device of the present invention, as Figure 6 The figure shows a schematic diagram of the actual application of the detection device in a specific embodiment of the present invention. The present invention also provides a method for using the trapezoidal thread wear detection device, comprising the following steps:

[0091] S1. Assemble the components of the detection device;

[0092] S2. Hold the handle to adjust the height and direction of the positioning workbench 2, then adjust the length of the positioning rod 3 and position it, and then adjust the length of the positioning plate 4 so that the second stop plate 42 and the first stop plate 33 clamp the trapezoidal thread;

[0093] S3. According to the actual position to be measured, the measuring table 5 is driven to move on the lifting rod by rotating the height of the positioning nut 511 on the lifting rod, and then the measuring rods 6 at the lateral ends of the measuring table 5 are adjusted to a suitable length;

[0094] S4. Move the back plate 6211 so that the pointer 721 points to the zero scale, then hold the handle to move the detection device along the spiral line of the trapezoidal thread. The position of the measuring head 7 changes with the change of thread wear, and the thread wear is detected by the indication of the pointer 721.

[0095] The order of the above steps S2 and S3 is determined according to personal operating habits and is not limited in the specific embodiment of the present invention. In other embodiments, another positioning nut can be rotatably provided on the positioning workbench, and the positioning workbench is threadedly connected to the lifting rod 1 through the other positioning nut.

[0096] In summary, the detection device in the present invention is accurately positioned. After the position and height of the detection device are located, the wear of the thread can be detected by moving it along the spiral line. The operation is simple, saves a lot of time, and does not require cumbersome equipment disassembly.

[0097] 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, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A trapezoidal thread wear detection device, characterized in that: The detection device includes a lifting rod, a positioning component and a measuring component; The lifting rod is provided with an external thread for connecting the positioning assembly and the measuring assembly; The positioning assembly comprises a positioning workbench, the positioning workbench is screwed onto the lifting rod in the longitudinal direction, and a positioning device is sleeved on the positioning workbench in the transverse direction, and the positioning device is used to position the lifting rod between two adjacent trapezoidal threads; The measuring assembly is sleeved on the lifting rod and arranged below the positioning assembly, and the two ends of the measuring assembly are respectively pressed against the inner side surfaces of two adjacent trapezoidal threads to measure the wear of the trapezoidal threads; The positioning device comprises a positioning rod, one end of which is transversely sleeved in the positioning workbench, and the length of the positioning rod extending into the positioning workbench is adjustable; The other end of the positioning rod is connected to a positioning plate, which clamps the two side surfaces of the trapezoidal thread and is used for continuous positioning of the detection device along the spiral line of the trapezoidal thread during detection; The measuring assembly comprises a measuring workbench and a measuring device; The measuring workbench comprises a connecting part and a measuring part; the connecting part is sleeved on the lifting rod, and the height of the measuring assembly on the lifting rod is adjusted by the connecting part; two measuring parts are provided, and the two measuring parts are respectively provided at the two lateral ends of the connecting part; The measuring device comprises a measuring rod and a measuring head, one end of the measuring rod is transversely sleeved in the measuring part, and the length of the measuring rod extending into the measuring part is adjustable; a back plate is arranged at one end of the measuring rod away from the measuring part, the back plate is arranged along the length direction of the measuring rod, and a scale value is arranged on the back plate; The measuring head is connected to one end of the measuring rod away from the measuring part, at least a part of the measuring head is slidably sleeved inside the measuring rod, one end of the measuring head away from the measuring rod abuts against the inner side surfaces of two adjacent trapezoidal threads, and the scale value on the back plate is indicated by the movement of the measuring head, so as to measure the wear condition of the trapezoidal threads; the connecting part and the measuring part are integrally formed; A positioning nut is rotatably connected to the top of the connecting portion, and the positioning nut is screwed onto the lifting rod and is used to adjust and position the height of the measuring workbench on the lifting rod; A second rotating nut is screwed onto the measuring rod, the second rotating nut is engaged with the stopper at the port of the measuring part, and is rotatably arranged on the measuring workbench; a second cavity is provided at one end of the measuring rod away from the measuring part, the second cavity is used to accommodate the measuring head; a reset spring is arranged between the measuring head and the measuring rod, one end of the reset spring is fixedly connected to the bottom end of the second cavity, and the other end is fixedly connected to one end of the measuring head close to the measuring rod; the reset spring is used to automatically adjust the length of the measuring head extending into the measuring rod; The inner wall of the second cavity is parallelly provided with a second inner slot along the length direction, the outer wall of the second cavity is parallelly provided with a second outer slot along the length direction, and a slot hole is opened on the outer wall corresponding to the second outer slot; the measuring head is provided with a second guide key and a raised base, the second guide key is slidably connected with the second inner slot, and the base is free to move along the length direction of the slot hole; The back plate is clamped on the second outer clamping slot; a pointer is installed on the base, and the pointer indicates the scale value on the back plate as the base moves, which is used to measure the wear value of the trapezoidal thread.

2. The trapezoidal thread wear detection device according to claim 1, characterized in that: A first rotating nut is threadedly connected to the positioning rod, the first rotating nut is engaged with a stopper at a transverse port of the positioning workbench, and is rotatably arranged on the positioning workbench; A first cavity is formed along the length direction of one end of the positioning rod away from the positioning workbench. The first cavity is used to accommodate at least a part of the positioning plate. A first stop plate is provided at the outer edge of the opening of the first cavity.

3. The trapezoidal thread wear detection device according to claim 2, characterized in that: The first stop plate and the positioning rod are integrally formed.

4. The trapezoidal thread wear detection device according to claim 2, characterized in that: A second stop plate is provided at one end of the positioning plate, and the other end is sleeved in the first cavity; the length of the positioning plate extending into the first cavity is adjustable, and the second stop plate and the first stop plate are clamped on the inner and outer sides of the trapezoidal thread.

5. The trapezoidal thread wear detection device according to claim 4, characterized in that: A first slot is formed on the outer wall of the first cavity and extends through the end surface of the outer wall along the length direction; The positioning plate is provided with a first guide key along the length direction, the first guide key is clamped in the first clamping slot, and the positioning plate slides in the first clamping slot through the first guide key to adjust the width between the second stop plate and the first stop plate.

6. The trapezoidal thread wear detection device according to claim 5, characterized in that: The first guide key is provided with a plurality of bolt holes spaced apart along the length direction, and bolts pass through the bolt holes to fasten the positioning plate and the positioning rod, thereby positioning the width between the second stop plate and the first stop plate.

7. The trapezoidal thread wear detection device according to claim 4, characterized in that: The second stop plate and the positioning plate are integrally formed.

8. The trapezoidal thread wear detection device according to claim 1, characterized in that: A positioning nut is rotatably connected above the connecting portion, and the positioning nut is threadedly connected to the lifting rod and is used to adjust and position the height position of the measuring workbench on the lifting rod.

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