A positioning and locking device

Abstract

This invention relates to a positioning and locking device, comprising a positioning part and a locking part. The positioning part includes a positioning seat, locking rod I, and locking rod II. The positioning seat is fixed to one of the two connecting parts to be locked. The locking part includes a locking seat, a housing, positioning pins, a locking screw, a screw support frame, a limiting block, a locking block, a spring, and a spring seat. The locking seat is fixed to the other part to be locked. When the positioning and locking device is in the locked state, positioning surface I on the positioning seat contacts positioning surface II on the locking seat, and the three positioning pins are respectively inserted into the three positioning holes. The two locking rods I and locking rod II are respectively inserted into the three locking holes on the locking seat. The locking block moves to the lower working position, and the locking action surface on the locking block is inserted into the locking grooves on locking rods I and II. The lower end of the locking screw is connected to the threaded hole on the limiting block. This invention can achieve rapid locking and accurate positioning.

Description

Technical Field

[0001] This invention belongs to the field of mechanical device technology, specifically relating to a positioning and locking device that can quickly and accurately lock two parts together. Background Technology

[0002] For ease of transport, large-scale measurement systems requiring field operations often employ a modular structure. This involves dividing the entire system into several parts, packing each part into a transport box, and then transporting them to the site by means of transport or by personnel. Finally, the various parts are joined and locked together to complete the assembly of the entire system. To ensure the effectiveness of measurement accuracy and the consistency of measurement results, strict requirements are placed on the relative installation positions of the various sensors installed on the measurement system, demanding high repeatability of installation across all parts of the system. Currently, the docking and locking process for the various parts of the measurement system often uses simple face pins for positioning to ensure repeatability, followed by screws for locking. Finally, to ensure that the relative installation positions of the sensors have not changed, calibration is required. This method is time-consuming and inefficient. Therefore, the development of a docking and locking mechanism that is fast, accurate in positioning, and compact in structure is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a positioning and locking device that can achieve rapid locking, accurate positioning, and compact structure.

[0004] The above-mentioned objective of this invention is achieved through the following technical solution:

[0005] A positioning and locking device includes a positioning part and a locking part;

[0006] The positioning part includes a positioning seat, locking rod I, and locking rod II. A positioning surface I and a positioning hole are provided on the front of the positioning seat. A through-hole is provided at the center of the positioning seat and on each of its left and right sides. There are three positioning holes, evenly distributed around the center of the positioning seat. There are two locking rods I, vertically inserted and fixed into the left and right through-holes. Each locking rod I has a single-sided locking groove. Locking rod II is vertically inserted and fixed into the central through-hole. Each locking rod II has symmetrical locking grooves on both sides. A threaded hole is provided on the side of the positioning seat, and a mounting screw is used to fix it to one of the two locking connectors.

[0007] The locking mechanism includes a locking seat, a housing, a positioning pin, a locking screw, a screw support frame, a limiting block, a locking block, a spring, and a spring seat. The front of the locking seat has a positioning surface II, which corresponds to multiple positioning surfaces I. The locking seat has a locking hole at its center and on each of its left and right sides. The two left and right locking holes correspond to the left and right locking rods I, respectively, and the middle locking hole corresponds to the locking rod II. The housing is fixedly connected to the back of the locking seat. Two limiting blocks are located in the upper part of the housing and fixedly connected to the top of the housing. Threaded holes are located in the middle of the two limiting blocks. The spring seat is located in the lower part of the housing and fixedly connected to the bottom of the housing. Next, a locking block is slidably connected vertically between the two limiting blocks and the spring seat inside the housing. Locking surfaces are provided on the lower left and right sides and the middle of the locking block. The locking surfaces on the left and right sides match the shape of the single-sided locking grooves on the two locking rods I, respectively. The locking surfaces in the middle are symmetrically arranged and match the shape of the two-sided locking grooves on the locking rod II. A spring is press-fitted between the lower end of the locking block and the upper end of the spring seat. The screw support frame is fixed to the upper end of the locking block. A locking screw is threadedly connected to the screw support frame at the corresponding threaded hole positions on the two limiting blocks. A threaded hole is provided on the side of the locking seat, which is fixed to the other component of the two locking connectors by a mounting screw.

[0008] When the positioning and locking device is in the locked state, positioning surface I and positioning surface II form surface contact, and the three positioning pins respectively form positioning insertion fits with the three positioning holes; the two locking rods I and locking rod II respectively form insertion fits with the three locking holes on the locking seat; the locking block moves to the lower working position, and the locking action surface on the locking block forms insertion fits with the locking grooves on the locking rods I and II; the lower end of the locking screw forms a threaded connection with the threaded hole on the limiting block.

[0009] Furthermore, the positioning part also includes a set screw and a positioning ball; a positioning groove is also provided on the front side of the positioning seat, and there are three positioning grooves, which are evenly distributed in the circumferential direction with the center of the positioning seat as the center; two set screw mounting holes are provided on the back side of the positioning seat corresponding to the three positioning grooves, and the two set screw mounting holes are respectively connected to the corresponding positioning groove through a ball socket. A positioning ball is provided in each ball socket. By installing the set screw in the set screw mounting hole, the positioning ball is pressed and embedded in the corresponding ball socket, and the front part of the positioning ball extends into the positioning groove.

[0010] Furthermore, three positioning blocks are evenly distributed and fixed on the front of the locking seat along the circumference with the center of the locking seat as the center. The outer end face of the three positioning blocks is an arc surface. When the positioning and locking device is in the locked state, the three positioning blocks respectively form a positioning contact with the positioning steel balls in the three positioning grooves on the positioning seat.

[0011] Furthermore, a spring positioning groove is provided at the upper end of the spring seat, and a spring positioning boss is provided at the lower end of the locking block. The spring positioning boss forms a positioning fit with the upper end of the spring, and the spring positioning groove forms a positioning fit with the lower end of the spring.

[0012] Furthermore, the housing is provided with through holes that correspond one-to-one with the three locking holes on the locking seat.

[0013] Furthermore, a handwheel is fixedly installed at the upper end of the locking screw.

[0014] The advantages and positive effects of this invention are as follows:

[0015] 1. The positioning and locking device of the present invention adopts a modular design concept, dividing the overall device into two parts: a positioning part and a locking part. The two parts are respectively installed on the two connecting parts to be locked, which has the advantages of fast locking speed, accurate positioning and compact structure.

[0016] 2. The positioning and locking device of the present invention has a locking block, a locking rod I and a locking rod II, which can realize a quick locking function and improve installation efficiency; it has components such as a positioning rod, a positioning surface, a positioning block and a positioning steel ball, which can ensure the repeatability and installation accuracy of the locked object.

[0017] 3. The positioning and locking device of the present invention can be modified in shape according to actual working needs, so that the present invention has the versatility to adapt to a variety of working scenarios. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the structural composition of the present invention.

[0019] Appendix Figure 2 This is a schematic diagram of the positioning part structure of the present invention. Figure I

[0020] Appendix Figure 3 This is a schematic diagram of the positioning part structure of the present invention. Figure II

[0021] Appendix Figure 4 This is a schematic diagram of the AA section position in the rear view of the positioning part of the present invention.

[0022] Appendix Figure 5 A cross-sectional view of the positioning part AA of the present invention.

[0023] Appendix Figure 6This is a schematic diagram of the locking part structure of the present invention. Figure I

[0024] Appendix Figure 7 This is a schematic diagram of the locking part structure of the present invention. Figure II

[0025] Appendix Figure 8 This is a schematic diagram of the internal components of the locking part of the present invention.

[0026] Appendix Figure 9 This is a schematic diagram of the BB section position in the side view of the locking part of the present invention in the locked state.

[0027] Appendix Figure 10 This is a BB cross-sectional view of the locking part of the present invention in the locked state.

[0028] Appendix Figure 11 This is a schematic diagram of the CC section position of the locking part of the present invention in the side view when it is not locked.

[0029] Appendix Figure 12 This is a CC cross-sectional view of the locking part of the present invention in the non-locked state.

[0030] Appendix Figure 13 This is a schematic diagram of the DD section position in the side view of the present invention in the locked state.

[0031] Appendix Figure 14 This is a cross-sectional view of the present invention in the locked state.

[0032] Appendix Figure 15 This is a schematic diagram of the EE section position in the side view of the present invention in the non-locked state.

[0033] Appendix Figure 16 This is a cross-sectional view of the EE in the non-locked state of the present invention. Detailed Implementation

[0034] The structure of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that these embodiments are descriptive and not limiting.

[0035] A positioning and locking device, please refer to Figures 1-16 The invention features a positioning part 1 and a locking part 2.

[0036] See appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5The positioning part 1 mainly includes a positioning seat 1-1, a locking rod I 1-2, a set screw 1-3, a positioning steel ball 1-6, and a locking rod II 1-7. The positioning seat 1-1 serves as the mounting base for the other components in the positioning part 1. The front of the positioning seat 1-1 is provided with structural features such as a positioning surface I 1-4, a positioning groove 1-5, and a positioning hole 1-8. A through hole for a rod is provided at the center and on each of the left and right sides of the positioning seat.

[0037] Preferably, there are three positioning slots 1-5 and three positioning holes 1-8. The three positioning slots are evenly distributed circumferentially with the center of the positioning seat as the center, and the three positioning holes are evenly distributed circumferentially with the center of the positioning seat as the center. The end of the locking rod I 1-2 is provided with a flange 1-2-1, and a single-sided locking slot 1-2-2 is provided on the rod body. The two locking rods I are respectively installed in the left and right through holes on the positioning seat with the flanges located on the back of the positioning seat, and are vertically fixed to the positioning seat by screws connected to the flanges. The end of the locking rod II 1-7 is provided with a flange 1-7-1, and locking slots 1-7-2 are symmetrically provided on both sides of the rod body. The locking rod II is respectively installed in the central through hole on the positioning seat with the flanges located on the back of the positioning seat, and is vertically fixed to the positioning seat by screws connected to the flanges. The locking grooves on both sides of the locking rod II are symmetrically arranged with the single-sided locking grooves on both sides of the locking rod I.

[0038] Two set screw mounting holes are provided on the back of the positioning seat at the positions corresponding to the three positioning slots. The two set screw mounting holes are connected to the corresponding positioning slots through a ball socket. A positioning steel ball is provided in each ball socket. The positioning steel ball is pressed and embedded in the corresponding ball socket by the set screw installed in the set screw mounting hole, and the front part of the positioning steel ball extends into the positioning slot.

[0039] A threaded hole is provided on the side of the positioning seat, which is fixed to one of the two locking connectors by a mounting screw.

[0040] See appendix Figure 6 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9 Appendix Figure 10 Appendix Figure 11 Appendix Figure 12 The locking part includes a locking seat 2-1, a housing 2-2, a positioning block 2-3, a positioning post 2-6, a locking screw 2-7, a screw support frame 2-8, a limiting block 2-9, a locking block 2-10, a spring 2-11, and a spring seat 2-12.

[0041] The locking seat 2-1 serves as the mounting base for the remaining components of the locking part 2. The front of the locking seat 2-1 has a positioning surface II 2-4. Positioning surface II and positioning surface I are multiple and correspond one-to-one. When the positioning part and the locking part are in the locked state, positioning surface I and positioning surface II form a one-to-one positioning contact. The locking seat has a locking hole 2-5 at its center and on each of its left and right sides. The two left and right locking holes correspond to the two left and right locking rods I, respectively, and the middle locking hole corresponds to the locking rod II. Three positioning blocks 2-3 are evenly distributed and fixed on the front of the locking seat, centered on the center, along the circumference. The outer end faces of the three positioning blocks are arc surfaces, and each positioning block contacts a steel ball in one of the three positioning grooves on the positioning seat, providing precise centering control. Three positioning post mounting holes are evenly distributed on the front of the locking seat, centered on the center, along the circumference. On the back of the locking seat, corresponding to the position of each positioning post mounting hole, a countersunk hole is provided that is coaxially connected. The system comprises three positioning pins, each with a tapered front end and a small-diameter external threaded end. The three positioning pins extend vertically towards the front of the locking seat and are respectively inserted into the three positioning pin mounting holes. Nuts, located within countersunk holes and connected to the external threaded ends at the rear, secure the three positioning pins vertically to the locking seat. The insertion and engagement of the three positioning pins with the three positioning holes on the positioning seat serves to limit the movement of the positioning and locking parts in the planar direction of the contact surface and to limit their rotation perpendicular to the contact surface.

[0042] The housing 2-2 is fixed to the back of the locking seat 2-1 by screws. Two limiting blocks 2-9 are located in the upper part of the housing and are fixed to the top of the housing by screws. A threaded hole is provided in the middle of each limiting block. The spring seat 2-12 is located in the lower part of the housing and is fixed to the bottom of the housing by screws. Two spring positioning grooves are provided on the upper surface of the two spring seats. The locking block is slidably connected vertically between the two limiting blocks and the spring seats inside the housing. Locking surfaces are provided on the lower left and right sides and in the middle of the locking block. The locking surfaces on the left and right sides match the shape of the single-sided locking grooves on the two locking rods I, and the locking surface in the middle is symmetrically arranged and matches the shape of the two side locking grooves on the locking rod II. A spring 2-11 is press-fitted between the lower end of the locking block and the two spring positioning grooves of the spring seat. A spring positioning boss can be provided at the lower end of the locking block to form a positioning fit with the upper end of the spring. The screw support frame consists of a vertical side and an upper horizontal side. The screw support frame is fixed to the upper end of the locking block via the vertical side (the two are connected by screws). A threaded hole is provided on the horizontal side of the screw support, corresponding to the position above each of the two limiting blocks. There are two locking screws, which are connected to the two threaded holes on the screw support frame. A handwheel is fixedly installed at the upper end of each locking screw for convenient rotation.

[0043] The housing has through holes that correspond one-to-one with the three locking holes on the locking seat, making it easy to observe the mating position of the locking action surface and the corresponding locking groove.

[0044] A threaded hole is provided on the side of the locking seat, which is fixed to the other part of the two locking connectors by a mounting screw.

[0045] See appendix Figure 13 Appendix Figure 14 Appendix Figure 15 Appendix Figure 16 The working principle of a positioning and locking device is as follows:

[0046] The positioning and engagement process of the positioning part 1 and the locking part 2 is as follows: the positioning pin 2-6 is inserted into the positioning hole 1-8 of the positioning seat 1-1, and at the same time, the locking rod I 1-2 and the locking rod II 1-7 are inserted into the locking hole 2-5. The positioning block 2-3 enters the positioning groove 1-5 of the positioning seat 1-1 and contacts the positioning ball 1-6. The positioning surface I 1-4 and the positioning surface II 2-4 are in contact. At this time, the positioning and engagement of the positioning part 1 and the locking part 2 are completed.

[0047] The locking process of the positioning part 1 and the locking part 2 is as follows: After the positioning part 1 and the locking part 2 are positioned, the locking block 2-10 is compressed and moved downward by pressing down the screw support frame 2-8, so that it contacts the locking groove 1-9 of the locking rod I1-2 and the locking rod II1-7. At this time, by rotating the locking screw 2-7, the external thread structure of the locking screw 2-7 is engaged with the internal thread structure of the limiting block 2-9, so as to achieve the function of tightening the contact state between the locking block 2-10 and the locking groove. At this time, the locking process of the positioning part 1 and the locking part 2 is completed.

[0048] Rotating the locking screw 2-7 in the opposite direction will cause the locking block 2-10 to disengage from the locking groove under the elastic force of the spring 2-11, thus completing the process of releasing the positioning part 1 from the locking part 2.

[0049] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A positioning and locking device, characterized in that: Includes a positioning part and a locking part; The positioning part includes a positioning seat, locking rod I, and locking rod II. A threaded hole is provided on the side of the positioning seat, which is fixed to one of the two locking connectors by mounting screws. A positioning surface I and a positioning hole are provided on the front of the positioning seat. A through-hole is provided at the center of the positioning seat and on each of its left and right sides. There are three positioning holes, evenly distributed around the center of the positioning seat. There are two locking rods I, which are vertically inserted and fixed into the left and right through-holes. A locking groove is provided on one side of the rod body of the locking rod I. The locking rod II is vertically inserted and fixed into the central through-hole. Locking grooves are symmetrically provided on both sides of the rod body of the locking rod II. The locking part includes a locking seat, a housing, a positioning pin, a locking screw, a screw support frame, a limiting block, a locking block, a spring, and a spring seat; a threaded hole is provided on the side of the locking seat, which is fixed to the other part of the two locking connecting parts by a mounting screw; The locking seat has a positioning surface II on its front side. Positioning surfaces II and I are multiple and correspond one-to-one. The locking seat has a locking hole at its center and on each of its left and right sides. The two left and right locking holes correspond to the left and right locking rods I, respectively, and the middle locking hole corresponds to the locking rod II. The housing is fixedly connected to the back of the locking seat. Two limiting blocks are provided, located in the upper part of the housing and fixedly connected to the top of the housing. Threaded holes are provided in the middle of the two limiting blocks. The spring seat is located in the lower part of the housing and fixedly connected to the bottom of the housing. The locking block is slidably connected vertically between the two limiting blocks and the spring seat inside the housing. Locking surfaces are provided on the lower left and right sides and the middle of the locking block. The locking surfaces on the left and right sides match the shape of the single-sided locking grooves on the two locking rods I, respectively. The locking surfaces in the middle are symmetrically arranged and match the shape of the two locking grooves on the locking rod II. The spring is press-fitted between the lower end of the locking block and the upper end of the spring seat. The screw support frame is fixed to the upper end of the locking block. A locking screw is threadedly connected to the screw support frame at the corresponding threaded hole positions on the two limiting blocks. When the positioning and locking device is in the locked state, positioning surface I and positioning surface II form surface contact, and the three positioning pins respectively form positioning insertion fits with the three positioning holes; the two locking rods I and locking rod II respectively form insertion fits with the three locking holes on the locking seat; the locking block moves to the lower working position, and the locking action surface on the locking block forms insertion fits with the locking grooves on the locking rods I and II; the lower end of the locking screw forms a threaded connection with the threaded hole on the limiting block.

2. The positioning and locking device according to claim 1, characterized in that: The positioning part also includes a set screw and a positioning ball; a positioning groove is also provided on the front side of the positioning seat, and there are three positioning grooves, which are evenly distributed in the circumferential direction with the center of the positioning seat as the center; two set screw mounting holes are provided on the back side of the positioning seat corresponding to the three positioning grooves, and the two set screw mounting holes are respectively connected to the corresponding positioning groove through a ball socket. A positioning ball is provided in each ball socket. The positioning ball is pressed and embedded in the corresponding ball socket by the set screw installed in the set screw mounting hole, and the front part of the positioning ball extends into the positioning groove.

3. The positioning and locking device according to claim 2, characterized in that: Three positioning blocks are evenly distributed and fixed on the front of the locking seat along the circumference with the center of the locking seat as the center. The outer end face of the three positioning blocks is an arc surface. When the positioning and locking device is in the locked state, the three positioning blocks respectively form a positioning contact with the positioning steel balls in the three positioning grooves on the positioning seat.

4. The positioning and locking device according to claim 1, characterized in that: A spring positioning groove is provided at the upper end of the spring seat, and a spring positioning boss is provided at the lower end of the locking block. The spring positioning boss and the upper end of the spring form a positioning fit, and the spring positioning groove and the lower end of the spring form a positioning fit.

5. The positioning and locking device according to claim 1, characterized in that: The housing has through holes that correspond one-to-one with the three locking holes on the locking seat.

6. The positioning and locking device according to claim 1, characterized in that: A handwheel is fixedly installed at the upper end of the locking screw.

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