Self-locking safety coupling

Abstract

The utility model relates to the technical field of couplings, and provides a self-locking type safety coupler which comprises a linkage shaft, connecting seats are fixedly connected to the two ends of the linkage shaft, connecting holes which are evenly distributed are formed in one side of each connecting seat, linkage assemblies are arranged in the connecting holes, and the linkage assemblies are fixedly connected with the linkage shaft. The linkage assembly is arranged in the connecting base, the linkage assembly is arranged in the connecting base, sliding holes which are symmetrical up and down are formed in the opposite sides of the connecting base, limiting assemblies which can prevent the linkage assembly from displacing are arranged in the sliding holes, and a supporting assembly which can stably install the whole device is arranged in the middle of the linkage shaft. The rotating shaft and the coupler can be connected, the linkage assembly can be limited and fixed through the limiting assembly, relative rotation between the linkage assembly and the connecting base is prevented, self-locking of the coupler can be achieved, and the problem that self-locking between an existing coupler and the rotating shaft is not convenient is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coupling technical field, specifically, relates to a self -locking safety coupling. BACKGROUND

[0002] Coupling refers to the coupling of two shafts or shafts and rotary parts, rotates together in the process of transmitting motion and power, and does not separate under normal circumstances. Sometimes it is used as a safety device to prevent the connected parts from bearing excessive load, and plays the role of overload protection.

[0003] Through the search, the self-locking telescopic coupling of the announcement number CN204127143U, including spline shaft, left section fork, right section fork, left side fork and right side fork, the spline shaft sleeve has spline sleeve, the right end of left section fork and spline shaft, the left end of right section fork and spline shaft are fixed through connecting shaft respectively, the left side fork and left section fork, right side fork and right section fork are respectively positioned through the sliding block, the right side fork is sleeved with steel sleeve, a pair of opposite steel balls are arranged in the right side fork, the left side fork and right side fork are respectively provided with assembly hole, the displacement sensor is arranged in the assembly hole. The self-locking telescopic coupling has simple structure, high assembly precision and long service life.

[0004] However, the above-mentioned coupling still has the following problems: the coupling is inconvenient to connect with the rotary shaft, cannot be self-locked, and is inconvenient to disassemble and maintain the inside. UTILITY MODEL CONTENTS

[0005] The utility model provides a self-locking safety coupling, solve the problem that the coupling is inconvenient to self-lock between the rotary shaft and the inside is inconvenient to disassemble and maintain.

[0006] The technical scheme of the utility model is as follows: a self-locking safety coupling, including linkage shaft, the both ends of linkage shaft are fixedly connected with connecting seat, the side of connecting seat is equipped with the connecting hole that is evenly distributed, the inside of connecting hole is provided with linkage assembly, the opposite side of connecting seat is equipped with the symmetrical sliding hole of up and down, the inside of sliding hole is provided with the limiting component that can prevent the displacement of linkage assembly, the middle part of linkage shaft is provided with the support assembly that can play stable installation to whole device.

[0007] Preferably, the support assembly includes a support frame, the support frame is sleeved on the outside of the middle part of the linkage shaft, an installation slot is formed in the inside of the support frame, a support bearing is fixedly connected in the inside of the installation slot, and the inner ring of the support bearing is fixedly connected to the outside of the middle part of the linkage shaft.

[0008] Preferably, the limiting assembly comprises a fixed plate, the fixed plate is slidably connected to the upper and lower sides inside the connecting seat, the opposite sides of the fixed plate are fixedly connected with limiting plates, the inside of the limiting plates is provided with uniformly distributed limiting grooves, and the opposite sides of the fixed plate are fixedly connected with supporting springs.

[0009] Preferably, the inside of the sliding hole is slidably connected with an adjusting block, and the adjusting block is fixedly connected with the limiting plates.

[0010] Preferably, the two sides of the inner wall of the connecting seat are vertically fixedly connected with guide frames, and the two ends of the fixed plate are fixedly connected with guide blocks.

[0011] Preferably, the linkage assembly comprises a driving shaft, the driving shaft is movably connected to one side of the connecting seat, the driving shaft is fixedly connected with a driving disc on one side, the driving disc is fixedly connected with uniformly distributed fixed columns on one side, the fixed columns are slidably connected inside the limiting grooves, and the fixed columns are fixedly connected with limiting blocks on one side.

[0012] Preferably, the top end of the supporting frame is fixedly connected with a hydraulic rod, and the top end of the hydraulic rod is fixedly connected with a mounting plate.

[0013] The utility model discloses a beneficial effect is:

[0014] 1. In the utility model, the linkage assembly is inserted in the connecting seat, the rotary shaft and the coupling are connected, the linkage assembly is fixed by the limiting assembly, the relative rotation between the linkage assembly and the connecting seat is prevented, the coupling is self-locked, and the problem that the existing coupling and the rotary shaft are not self-locked is solved.

[0015] 2. In the utility model, the linkage shaft is supported by the supporting assembly, so that the coupling can be stably kept, the coupling can be freely rotated, the height of the coupling can be adjusted by the hydraulic rod, the coupling and the rotary shaft can be disassembled and assembled by the limiting assembly, the coupling can be maintained and repaired, and the problem that the existing coupling is not disassembled and assembled is solved. ACCURATE DRAWINGS

[0016] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0017] Figure 1 The structure schematic view of the utility model is provided.

[0018] Figure 2 The structure schematic view of the supporting assembly of the utility model is provided.

[0019] Figure 3 The utility model provides a limiting assembly structure schematic drawing is provided for the utility model,

[0020] Figure 4 The utility model provides a linkage assembly structure schematic drawing is provided for the utility model,

[0021] In the drawing: 1, linkage shaft, 2, connecting seat, 3, connecting hole, 4, hydraulic rod, 5, mounting plate, 6, support assembly, 61, support frame, 62, mounting groove, 63, support bearing, 7, sliding hole, 8, limiting assembly, 81, fixed plate, 82, limiting plate, 83, limiting slot, 84, adjusting block, 85, support spring, 86, guide frame, 87, guide block, 9, linkage assembly, 91, drive shaft, 92, drive disc, 93, fixed column, 94, limiting block. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor are involved in the protection scope of the utility model.

[0023] Please refer to Figure 1 The utility model provides a kind of self-locking safety coupling technical scheme: a kind of self-locking safety coupling, including linkage shaft 1, the both ends of linkage shaft 1 are fixedly connected with connecting seat 2, the side of connecting seat 2 is evenly distributed and is equipped with connecting hole 3, the inside of connecting hole 3 is provided with linkage assembly 9, the side opposite to connecting seat 2 is equipped with the sliding hole 7 that is symmetrical up and down, the inside of sliding hole 7 is provided with the limiting assembly 8 that can prevent linkage assembly 9 displacement, the middle part of linkage shaft 1 is provided with the support assembly 6 that can be installed to the whole device Stable, support frame 61 top is fixedly connected with hydraulic rod 4, the top of hydraulic rod 4 is fixedly connected with mounting plate 5, by controlling the telescopic length of hydraulic rod 4, can drive coupling to move up and down, it is convenient to adjust the height of coupling.

[0024] Please refer to Figure 2 Support assembly 6 includes support frame 61, support frame 61 is sleeved in the outside of the middle part of linkage shaft 1, installation groove 62 is equipped in the inside of support frame 61, support bearing 63 is fixedly connected in the inside of installation groove 62, the inner ring of support bearing 63 is fixedly connected in the outside of the middle part of linkage shaft 1, by the action of support frame 61 and support bearing 63, the whole linkage shaft 1 can be stably supported.

[0025] Please refer to Figure 3The limiting assembly 8 comprises a fixed plate 81 slidably connected to the upper and lower sides inside the connecting seat 2, and the opposite sides of the fixed plate 81 are fixedly connected with limiting plates 82, the inside of each limiting plate 82 is provided with uniformly distributed limiting clamping grooves 83, the opposite sides of the fixed plate 81 are fixedly connected with supporting springs 85, the inside of the sliding hole 7 is slidably connected with adjusting blocks 84, one side of each adjusting block 84 is fixedly connected with the limiting plate 82, the two sides of the inner wall of the connecting seat 2 are vertically fixedly connected with guide frames 86, and the two ends of the fixed plate 81 are fixedly connected with guide blocks 87, the guide blocks 87 are slidably connected inside the guide frames 86, the fixed plate 81 is pushed to the two sides by the supporting springs 85, which can drive the limiting plates 82 to move to the two sides, so that the fixed column 93 can be inserted into the limiting clamping groove 83, the limiting block 94 is moved to one side of the limiting plate 82, which can limit the fixed column 93, prevent the fixed column 93 from moving out of the inside of the connecting seat 2, complete the connection and fixation between the shaft coupling and the rotary shaft, and the adjusting blocks 84 are simultaneously pushed to the middle, which can drive the fixed plates 81 to move close to each other, thereby driving the guide blocks 87 to stably slide inside the guide frames 86, so that the fixed column 93 is moved out of the limiting clamping groove 83, the fixing of the fixed column 93 is released, then the fixed column 93 is moved out of the inside of the connecting hole 3, and the shaft coupling can be disassembled and repaired.

[0026] Please refer to Figure 4 The linkage assembly 9 comprises a driving shaft 91 movably connected to one side of the connecting seat 2, the driving shaft 91 is fixedly connected with a driving disc 92 on one side, the driving disc 92 is fixedly connected with uniformly distributed fixed columns 93 on one side, the fixed columns 93 are slidably connected inside the limiting clamping grooves 83, and the limiting blocks 94 are fixedly connected on one side of the fixed columns 93. The driving disc 92 on one side of the driving shaft 91 is butt jointed with the connecting seat 2, so that the fixed columns 93 together with the limiting blocks 94 are inserted into the inside of the connecting hole 3, the fixed plate 81 is pushed to the two sides by the supporting springs 85, which can drive the limiting plates 82 to move to the two sides, so that the fixed columns 93 can be inserted into the limiting clamping groove 83, and the rotary shaft and the shaft coupling can be connected and fixed.

[0027] The working principle and use process of the utility model are as follows: by simultaneously pushing the adjusting block 84 to the middle part, the fixed plate 81 can be driven to move close to each other, thereby driving the guide block 87 to stably slide in the inside of the guide frame 86, then the driving disc 92 on one side of the driving shaft 91 is butted with the connecting seat 2, the fixed column 93 together with the limiting block 94 are respectively inserted in the inside of the connecting hole 3, the fixed plate 81 is pushed to the two sides by the supporting spring 85, the limiting plate 82 can be driven to move to the two sides, thereby the fixed column 93 can be inserted in the inside of the limiting clamping groove 83, the limiting block 94 is moved to one side of the limiting plate 82, the fixed column 93 can be limited, the fixed column 93 is prevented from moving out from the inside of the connecting seat 2, the connection and fixation between the coupling and the rotary shaft are completed, by installing the mounting plate 5 in the specified position, the extension length of the hydraulic rod 4 is controlled, the coupling can be driven to move up and down, the height of the coupling is conveniently adjusted, when the coupling needs to be maintained, the adjusting block 84 is extruded to the middle part, the fixed plate 81 is driven to move, the fixed column 93 is moved out from the inside of the limiting clamping groove 83, the fixed column 93 is fixed, then the fixed column 93 is moved out from the inside of the connecting hole 3, the coupling can be disassembled and maintained.

[0028] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A self-locking safety coupling, comprising a linkage shaft (1), characterized in that, Both ends of the linkage shaft (1) are fixedly connected to connecting seats (2). Each side of the connecting seat (2) is provided with evenly distributed connecting holes (3). The connecting holes (3) are provided with linkage components (9). Each side of the connecting seat (2) is provided with symmetrical sliding holes (7). Each sliding hole (7) is provided with a limiting component (8) that can prevent the linkage component (9) from shifting. The middle part of the linkage shaft (1) is provided with a support component (6) that can stably install the entire device.

2. The self-locking safety coupling according to claim 1, characterized in that, The support assembly (6) includes a support frame (61), which is fitted on the outer side of the middle part of the linkage shaft (1). The support frame (61) has an installation groove (62) inside, and a support bearing (63) is fixedly connected inside the installation groove (62). The inner ring of the support bearing (63) is fixedly connected to the outer side of the middle part of the linkage shaft (1).

3. A self-locking safety coupling according to claim 1, characterized in that, The limiting component (8) includes a fixing plate (81), which is slidably connected to the upper and lower sides inside the connecting seat (2). A limiting plate (82) is fixedly connected to the opposite side of the fixing plate (81). The limiting plate (82) has evenly distributed limiting slots (83) inside. A support spring (85) is fixedly connected to the opposite side of the fixing plate (81).

4. A self-locking safety coupling according to claim 3, characterized in that, An adjusting block (84) is slidably connected inside the sliding hole (7), and one side of the adjusting block (84) is fixedly connected to the limiting plate (82).

5. A self-locking safety coupling according to claim 3, characterized in that, Guide frames (86) are vertically fixedly connected to both sides of the inner wall of the connecting seat (2), and guide blocks (87) are fixedly connected to both ends of the fixing plate (81). The guide blocks (87) are slidably connected inside the guide frames (86).

6. A self-locking safety coupling according to claim 3, characterized in that, The linkage component (9) includes a drive shaft (91), which is movably connected to one side of the connecting seat (2). A drive disk (92) is fixedly connected to one side of the drive shaft (91), and a uniformly distributed fixing column (93) is fixedly connected to one side of the drive disk (92). The fixing column (93) is slidably connected inside the limiting slot (83), and a limiting block (94) is fixedly connected to one side of the fixing column (93).

7. A self-locking safety coupling according to claim 2, characterized in that, A hydraulic rod (4) is fixedly connected to the top of the support frame (61), and a mounting plate (5) is fixedly connected to the top of the hydraulic rod (4).

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