Quick release coupling

Abstract

A quick-release coupling comprises two half-couplings, a latch and an elastic locking member, wherein the half-coupling comprises a first end face and a second end face, wherein a snap-in groove extending radially along the half-coupling is arranged on the first end face, wherein the snap-in groove extends from one side of the half-coupling to the other side, wherein the snap-in groove comprises a bottom wall and two side walls extending from both sides of the bottom wall to the first end face respectively, wherein the side walls gradually approach the middle of the snap-in groove in the direction from the bottom wall to the first end face, wherein the first end faces of the two half-couplings are butted against each other, wherein the snap-in grooves on the two first end faces jointly form a plug-in hole, wherein the latch is plugged into the plug-in hole, wherein the cross-sectional shape thereof matches the shape of the plug-in hole, wherein a stop block abutting against one side of the two half-couplings is fixed at one end of the latch, wherein the elastic locking member is connected to the other end of the latch and abutting against the other side of the two half-couplings. The invention can realize the quick disassembly and installation of the two half-couplings, thereby realizing the quick replacement of equipment components.

Description

Technical Field

[0001] The invention relates to the technical field of transmission, and in particular to a quick-release coupling. Background Art

[0002] When a motor or reducer fails, in order to ensure normal production, it is usually necessary to disassemble the coupling at the power output end and replace it with a new motor or reducer. The existing coupling is relatively complicated in the disassembly process and takes a long time to disassemble, which cannot achieve the purpose of quickly replacing the motor or reducer, thus affecting production efficiency. Summary of the invention

[0003] In view of the deficiencies of the prior art, an object of the present invention is to provide a quick-release coupling that can be quickly disassembled to facilitate rapid replacement of equipment components.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] The quick-release coupling comprises two half-couplings, a latch and an elastic locking piece. The half-coupling comprises a first end face and a second end face. A snap-in groove extending radially along the half-coupling is arranged on the first end face. The snap-in groove extends from one side of the half-coupling to the other side. The snap-in groove comprises a bottom wall and two side walls extending from both sides of the bottom wall to the first end face respectively. The side walls gradually approach the middle of the snap-in groove in the direction from the bottom wall toward the first end face. The first end faces of the two half-couplings are butted against each other. The snap-in grooves on the two first end faces jointly form a plug-in hole. The latch is plugged into the plug-in hole. Its cross-sectional shape matches the shape of the plug-in hole. A limit block abutting against one side of the two half-couplings is fixed at one end of the latch. The elastic locking piece is connected to the other end of the latch and abuts against the other side of the two half-couplings.

[0006] The latch includes two first mating surfaces that are oppositely arranged and respectively affixed to the bottom walls of the two snap-fitting grooves, and a second mating surface that is oppositely arranged and connected between the two first mating surfaces. A recess is formed in the middle of the second mating surface, and the parts of the second mating surface located on both sides of the recess respectively form a snap-fitting surface. The snap-fitting surface and the connection with the first mating surface form a first snap-fitting portion, and the side wall of the snap-fitting groove and the first end face are connected to form a second snap-fitting portion. The second snap-fitting portion confines the first snap-fitting portion within the snap-fitting groove.

[0007] The elastic locking piece is a spring sheet, which comprises a fixed end connected to the latch and a free end opposite to the fixed end, wherein the free end abuts against the other side of the two half coupling shafts.

[0008] The side surface of the other end of the latch is provided with an escape recess for escaping the spring sheet.

[0009] The other end of the latch is provided with a necking section, and an avoidance recess is formed on both sides of the necking section respectively. The elastic locking member comprises two spring plates, and the two spring plates are respectively placed on both sides of the necking section.

[0010] A fixing plate is connected between the fixed ends of the two spring pieces. The fixing plate is fixed to the end surface of the necking section by a bolt. The fixing plate and the two spring pieces are formed in one piece.

[0011] A lubricating oil groove which is recessed toward the inside of the half-coupling is also arranged at the junction of the bottom wall and the side wall of the clamping groove.

[0012] The beneficial effects of the present invention are:

[0013] Compared with the existing couplings, the present invention utilizes a transversely inserted pin to connect the two half-couplings. The pin and the half-coupling are matched by mortise and tenon joints, and an elastic locking piece is provided on the pin to abut against the half-coupling, which can realize the rapid disassembly and installation of the two half-couplings, and then realize the rapid replacement of equipment components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is the installation schematic diagram of the present invention;

[0016] Figure 3 for Figure 2 Schematic diagram of the structure of the middle half coupling;

[0017] Figure 4 It is a cross-sectional view of the present invention. DETAILED DESCRIPTION

[0018] Below, in conjunction with the accompanying drawings and specific embodiments, the present invention is further described:

[0019] like Figure 1 , 2, 3, and 4 show a quick-release coupling of the present invention, which includes a half-coupling 10, a half-coupling 20, a latch 30, and an elastic locking member; the half-coupling 10 includes a first end face 12 and a second end face, and similarly, the half-coupling 20 also includes a first end face 22 and a second end face. When the half-coupling 10 and the half-coupling 20 are connected, the first end face 12 and the first end face 22 are butted against each other, and the second end faces of the half-coupling 10 and the half-coupling 20 are end faces of the two that are away from each other; a snap-fit ​​groove 11 is provided on the first end face 12, and the snap-fit ​​groove 11 extends along the radial direction of the half-coupling 10, and is formed by The side of the half coupling 10 penetrates to the other side of the half coupling 10, and the cross section of the clamping groove 11 is trapezoidal. Specifically, the clamping groove 11 includes a bottom wall 111 and two side walls 112, wherein the two side walls 112 respectively extend from the two sides of the bottom wall 111 to the first end surface 12, and the two side walls 112 are inclined, and the angle between the side wall 112 and the bottom wall 111 is less than 90°, that is, the side wall 112 gradually approaches the middle of the clamping groove 11 in the direction from the bottom wall 111 toward the first end surface 12, so that the width of the opening part of the clamping groove 11 is smaller than the width at the bottom wall 111; see Figure 3Similarly, a snap-in groove 21 is provided on the first end face 22 of the half coupling 20. The snap-in groove 21 has the same structure as the above-mentioned snap-in groove 11, and includes a bottom wall 211 and two side walls 212. The two side walls 212 and the bottom wall 211 form a structure with a trapezoidal cross section as described above, and no repeated description is made here. After the first end faces 12 and the first end faces 22 of the half coupling 10 and the half coupling 20 are butt-jointed with each other, the snap-in groove 11 and the snap-in groove 21 on the two together constitute a plug-in hole. After the side walls 112 and the side walls 212 are butt-jointed, the two form a protrusion protruding toward the center of the plug-in hole in the middle of the side of the plug-in hole. The cross-sectional shape of the latch 30 is consistent with that of the plug-in hole, and the latch 30 is matched and plugged into the plug-in hole. The outer peripheral surface of the latch 30 is respectively fitted to the bottom wall 111, the bottom wall 211, and the side walls of the plug-in hole formed by the side walls 112 and the side walls 212 on both sides. In this way, the latch 30 is used as a tenon placed in the clamping groove 11 and the clamping groove 21 to connect the half coupling 10 and the half coupling 20 together to limit the axial freedom of the half coupling 10 and the half coupling 20. In addition, a limit block 31 is provided at one end of the latch 30, and an elastic locking member is installed at the other end of the latch 30. After the latch 30 is embedded in the clamping groove 11 and the clamping groove 12, the limit block 31 abuts against the half coupling 10 and the half coupling 20. On one side of the coupling 20, the elastic locking piece abuts against the other side of the half coupling 10 and the half coupling 20. In this way, the two ends of the pin 30 are limited by the limit block 31 and the elastic locking piece, and the pin 30 cannot move radially between the half coupling 10 and the half coupling 20, thereby preventing the pin 30 from detaching from the side of the half coupling 10 and the half coupling 20 from the engaging groove 11 and the engaging groove 21, thereby connecting the half coupling 10 and the half coupling 20 together. During disassembly, the elastic locking piece is triggered to deform and detach from the other side of the half coupling 10 and the half coupling 20, so that the pin 30 can be pulled out from the engaging groove 11 and the engaging groove 21 from one end of the limit block 31, thereby realizing the rapid disassembly of the half coupling 10 and the half coupling 20.

[0020] More specifically, the above-mentioned latch 30 includes two opposite first mating surfaces 34 and two opposite second mating surfaces 33, the two first mating surfaces 34 are respectively fitted with the bottom wall 111 and the bottom wall 211, and the two second mating surfaces 33 are respectively connected between the two sides of the two first mating surfaces 34, wherein a concave position is formed in the middle of the second mating surface 33, and a clamping surface 331 is formed on both sides of the concave position, and the two clamping surfaces 331 form a V shape, and the angle between the two is the same as the angle between the side wall 112 and the side wall 212 after docking, and a first clamping portion is formed at the position where the clamping surface 331 and the first mating surface 34 are connected, thereby forming a first clamping portion at the four corners of the latch 30. The clamping portion, on the half-coupling 10, a second clamping portion is formed at the junction of the side wall 112 of the clamping groove 11 and the first end face 12, that is, a second clamping portion is formed on both sides of the opening of the clamping groove 11, and on the half-coupling 20, a second clamping portion is formed at the junction of the side wall 212 of the clamping groove 21 and the first end face 22, and a second clamping portion is formed on both sides of the opening of the clamping groove 21, and the first clamping portions located on both sides of one of the first mating surfaces 34 of the latch 30 are respectively confined in the clamping groove 11 by the second clamping portions on both sides of the opening of the clamping groove 11, and the first clamping portions located on both sides of the other first mating surface 34 of the latch are respectively confined in the clamping groove 21 by the second clamping portions on both sides of the opening of the clamping groove 21.

[0021] It should be noted that the side walls 112 and 212 are both configured as inclined planes. In fact, the side walls 112 and 212 may also be configured as arcuate surfaces, and the second mating surface 33 may also be configured as an arcuate surface accordingly.

[0022] See also Figure 1In a preferred embodiment of the present invention, the elastic locking member is a spring sheet 40, one end of the spring sheet 40 is a fixed end 42, and the other end is a free end 41 opposite to the fixed end 42, wherein the fixed end 42 is connected to the latch 30, and the free end 41 abuts against the other side of the half coupling 10 and the half coupling 20, and cooperates with the limit block 31 to clamp the half coupling 10 and the half coupling 20. When disassembly is required, an external force is applied to the free end 41 of the spring sheet 40 to deform it to separate from the other side surface of the half coupling 10 and the half coupling 20, and then the latch 40 can be pulled out; in order to further improve the efficiency of quick disassembly and the convenience of operation, an avoidance recess 321 is provided on the side surface of the other end of the latch 30, and the avoidance recess 321 is used to avoid the spring sheet 40. Specifically, the fixed end 42 of the spring sheet 40 is connected to the end surface of the other end of the latch 30, and the spring sheet 40 The free end of the spring sheet 40 is located outside the avoidance recess 321 and abuts against the half coupling 10 and the half coupling 20. When disassembly is required, the free end 41 of the spring sheet 40 is pressed toward the inside of the avoidance recess 321 so that the free end 41 of the spring sheet 40 is accommodated in the avoidance recess 321. At this time, the free end 41 of the spring sheet 40 will not protrude from the outermost side of the latch 30. In this way, the latch 30 can be pulled out from the half coupling 10 and the half coupling 20. During assembly, the end of the spring sheet 40 installed by the latch 30 is inserted into the plug-in hole formed by the butt joint of the half-coupling 10 and the half-coupling 20, and the free end 41 of the spring sheet 40 is squeezed and accommodated in the avoidance recess 321. When the limit block 31 abuts against the half-coupling 10 and the half-coupling 20, the free end 41 of the spring sheet 40 passes through the plug-in hole and is placed outside the avoidance recess 321 after rebounding to abut against the half-coupling 10 and the half-coupling 20. In order to ensure balanced forces on both sides, the present invention provides avoidance recesses on both sides of the latch 30. Specifically, a necking section 32 is provided at the other end of the latch 30. The width of the necking section 32 is smaller than the width of other parts of the latch 30. An avoidance recess 321 is formed on both sides of the necking section 32. The elastic locking member is two spring plates 40. The two spring plates 40 are respectively located on both sides of the necking section 32. In this way, a spring plate 40 is provided on both sides of the latch 30, so that both sides of the latch 30 apply the same elastic preload force to the half coupling 10 and the half coupling 20 to ensure balanced forces.

[0023] The two spring pieces 40 can be an integral structure formed by bending a metal plate. A fixing plate 44 is connected between the fixed ends 42 of the two spring pieces 40. The fixing plate 44 is attached to the end surface of the necked section 32. A bolt 43 passes through the fixing plate 44 and is screwed to the necked section 32 to connect the two spring pieces 40 to the pin 30.

[0024] In addition, in order to enable the latch 30 to slide smoothly in the engaging groove 11 and the engaging groove 21 to ensure that the latch 30 can be quickly withdrawn or inserted, a lubricating oil groove is provided in the engaging groove 11 and the engaging groove 21. Figure 3As shown, taking the half coupling 20 as an example, a lubricating oil groove 23 is formed at the junction of the bottom wall 211 and the side wall 212, which is recessed toward the inside of the half coupling 20. Lubricating oil is injected into the lubricating oil groove 23 to reduce the friction between the latch 30 and the half coupling 20. The lubricating oil groove in the clamping groove 11 of the half coupling 10 is the same as described above and will not be repeated here.

[0025] It should be noted that, in the above-mentioned embodiment of the present invention, only the spring sheet 40 is used as a preferred solution to illustrate the elastic locking member of the present invention. In fact, the elastic locking member of the present invention may also be other structures, for example, a spring pin or an elastic limit block installed on the latch 30. When disassembly is required, the spring pin or the elastic limit block is pressed inward to be accommodated in the latch 30. After the installation is completed, the spring pin or the elastic fiber block pops out to abut against the half-coupling 10 and the half-coupling 20.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Quick release coupling, characterized in that: The locking device comprises two half-couplings, a latch and an elastic locking piece. The half-coupling comprises a first end face and a second end face. A snap-fit ​​groove extending radially along the half-coupling is arranged on the first end face. The snap-fit ​​groove extends from one side of the half-coupling to the other side. The snap-fit ​​groove comprises a bottom wall and two side walls extending from both sides of the bottom wall to the first end face respectively. The side walls gradually approach the middle of the snap-fit ​​groove in the direction from the bottom wall to the first end face. The first end faces of the two half-couplings are butted against each other. The snap-fit ​​grooves on the two first end faces jointly form an insertion hole. The latch is inserted into the insertion hole, and its cross-sectional shape matches the shape of the insertion hole. A limit block abutting against one side of the two half-couplings is fixed at one end of the latch. The elastic locking piece is connected to the other end of the latch and abuts against the other side of the two half-couplings. The elastic locking piece is a spring sheet, which comprises a fixed end connected to the latch and a free end opposite to the fixed end, and the free end abuts against the other side of the two half-couplings.

2. The quick-release coupling according to claim 1, characterized in that: The latch includes two first mating surfaces that are oppositely arranged and respectively affixed to the bottom walls of the two snap-fitting grooves, and a second mating surface that is oppositely arranged and connected between the two first mating surfaces. A recess is formed in the middle of the second mating surface, and the parts of the second mating surface located on both sides of the recess respectively form a snap-fitting surface. The snap-fitting surface and the connection with the first mating surface form a first snap-fitting portion, and the side wall of the snap-fitting groove and the first end face are connected to form a second snap-fitting portion. The second snap-fitting portion confines the first snap-fitting portion within the snap-fitting groove.

3. The quick-release coupling according to claim 1, characterized in that: The side surface of the other end of the latch is provided with an escape recess for escaping the spring sheet.

4. The quick-release coupling according to claim 3, characterized in that: The other end of the latch is provided with a necked section, and an avoidance recess is formed on both sides of the necked section respectively. The elastic locking member comprises two spring plates, and the two spring plates are respectively placed on both sides of the necked section.

5. The quick-release coupling according to claim 4, characterized in that: A fixing plate is connected between the fixed ends of the two spring pieces. The fixing plate is fixed to the end surface of the necking section by a bolt. The fixing plate and the two spring pieces are formed in one piece.

6. The quick-release coupling according to claim 1, characterized in that: A lubricating oil groove which is recessed toward the inside of the half-coupling is also arranged at the junction of the bottom wall and the side wall of the clamping groove.

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