Assembly lifting appliance for engine camshaft

Abstract

The utility model relates to the technical field of lifting appliances, and provides an assembly lifting appliance for an engine camshaft, which comprises a support and a clamping unit, the clamping unit comprises a fixed seat, a plurality of clamping jaws and an abutting block, and the support is used for being fixedly connected with hoisting equipment; the fixed seat is fixedly arranged on the bracket; the clamping jaw is rotationally arranged on the fixed seat; the abutting block is fixedly arranged at the end, close to the clamping jaws, of the fixing base, an abutting groove is formed in the side, away from the fixing base, of the abutting block, and when the multiple clamping jaws clamp the cam shaft, one end of the cam shaft is clamped in the abutting groove. According to the assembly lifting appliance, the abutting block is arranged, the abutting groove is formed in the abutting block, the camshaft can be abutted and fixed through clamping of the abutting block and the end of the camshaft, axial movement of the camshaft in the assembly process is avoided, and therefore the fixing firmness degree of the assembly lifting appliance is improved, and normal operation of the assembly lifting appliance is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hangers, in particular to an assembly hanger for an engine camshaft. Background Art

[0002] The engine camshaft is heavy and long, which can be more than 2 meters long. During the engine assembly process, in order to safely, efficiently and accurately assemble the camshaft and the engine block, an industrial transfer assembly system is usually used with corresponding assembly hoists to transport the camshaft.

[0003] The invention patent with the patent publication number CN112917420B discloses a forklift half-axle assembly fixture, which relates to the field of fixture technology, and specifically includes a top mounting plate, an assembly arm and a top plate. The left end of the assembly arm is fixedly connected with a connection seat A for connection, and the connection seat A is internally rotatably connected with a floating cylinder A. The top of the floating cylinder A is rotatably connected with the bottom of the top plate, and the bottom of the top plate is fixedly connected with a vertical lifting structure, and the vertical lifting structure includes a floating cylinder B, a positioning plate, a guide block, a guide groove and a movable column. By setting the floating cylinder A, the pitch cylinder, the hand-cranked reduction mechanism and the clamping gripper structure, the effect of easily completing the assembly of the forklift half-axle by one person is achieved. Through the vertical lifting structure, the effect of improving the assembly efficiency is achieved, and the traditional manual assembly is solved. Because the half-axle is heavy and the assembly space is compact, it requires three to four people to complete it together, the work labor intensity is large, the efficiency is low, and safety accidents are prone to occur, and the assembly problems caused by the height difference are also solved.

[0004] In the above technical solution, a gripper is provided for transporting the half-shaft. However, when the half-shaft is assembled, the end of the half-shaft away from the gripper will be subjected to a resisting force, which may cause the half-shaft to slide with the gripper. This not only affects the firmness of fixation and assembly accuracy of the half-shaft, but may even damage the clamping cylinder, affecting the normal use of the device. Utility Model Content

[0005] In view of this, the utility model proposes an assembly hanger for an engine camshaft, which can support the end of the camshaft and improve the fixing firmness of the assembly fixture.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides an assembly hanger for an engine camshaft, comprising a bracket and a clamping unit, wherein the clamping unit comprises a fixing seat, a plurality of clamping claws and a holding block, wherein:

[0007] The bracket is used for fixed connection with the lifting equipment;

[0008] The fixing seat is fixedly arranged on the bracket;

[0009] The clamping jaw is rotatably arranged on the fixing seat;

[0010] The abutment block is fixedly arranged at one end of the fixing seat close to the clamping claw, and abutment groove is provided on one side away from the fixing seat. When the plurality of clamping claws clamp the camshaft, one end of the camshaft is clamped in the abutment groove.

[0011] On the basis of the above technical solution, preferably, the abutting groove includes a reducing groove and a constant diameter groove, wherein:

[0012] The inner diameter of the variable diameter groove gradually increases from the direction from the end close to the fixing seat to the end away from the fixing seat;

[0013] The equal-diameter groove is located at one end of the variable-diameter groove close to the fixing seat and is communicated with the fixing seat.

[0014] More preferably, the inner diameter of the variable diameter groove at one end close to the fixing seat is equal to the inner diameter of the equal diameter groove, and the two are coaxially arranged.

[0015] More preferably, the plurality of clamping jaws are arranged in a circular array about the center line of the equal-diameter groove.

[0016] More preferably, the clamping unit further comprises a clamping cylinder and a connecting rod, wherein:

[0017] The clamping cylinder is fixedly arranged in the fixing seat;

[0018] The two ends of the connecting rod are rotatably arranged on the output shaft of the clamping cylinder and one end of the clamping claw close to the fixing seat, and the connecting rod corresponds to the clamping claw one by one.

[0019] More preferably, the clamping unit further comprises a protective cover, the protective cover is fixedly disposed on the fixing seat, and one end of the clamping claw close to the fixing seat is located inside the protective cover.

[0020] On the basis of the above technical solution, preferably, the bracket includes a fixed arm and a rotating seat, and the rotating seat includes a fixed cylinder, a rotating shaft and a hand wheel, wherein:

[0021] One end of the fixed arm is used to be fixedly connected to the lifting equipment;

[0022] The fixing cylinder is fixedly arranged on the fixing arm;

[0023] The rotating shaft is disposed through the fixed cylinder and is rotatably connected thereto;

[0024] The fixing seat is fixedly arranged at one end of the rotating shaft, and the hand wheel is fixedly arranged at the other end of the rotating shaft.

[0025] More preferably, two limit plates are further included, and the two limit plates are respectively fixedly arranged on the fixed cylinder and the fixed seat, and the two limit plates are selectively abutted against each other.

[0026] More preferably, the fixed arm includes a flange bracket, a rotating bracket and a horizontal cylinder, wherein:

[0027] One end of the rotating bracket is rotatably arranged on the flange bracket, and the other end is connected to the rotating seat, and the rotating bracket rotates in a vertical plane relative to the flange bracket;

[0028] The horizontal cylinder is rotatably arranged on one of the flange bracket and the rotating bracket, and the output end of the horizontal cylinder is rotatably arranged on the other of the flange bracket and the rotating bracket.

[0029] More preferably, the fixed arm further comprises a connecting bracket and a positioning cylinder, wherein:

[0030] The connecting bracket is rotatably arranged on the flange bracket, and the two are coaxially arranged;

[0031] The positioning cylinder is fixedly arranged on the connecting bracket, and the output end thereof selectively abuts against the peripheral side of the flange bracket.

[0032] The utility model of an assembly hanger for an engine camshaft has the following beneficial effects compared with the prior art:

[0033] (1) By providing a supporting block and opening a supporting groove on the supporting block, the camshaft can be supported and fixed by clamping the supporting block with the end of the camshaft to prevent the camshaft from axially moving during the assembly process, thereby improving the fixing firmness of the assembly hanger and ensuring the normal operation of the assembly hanger;

[0034] (2) By setting a rotating seat, the position of the clamping unit can be adjusted according to actual needs, and by setting a limit plate, the rotation angle of the rotating seat can be limited to avoid repeated rotation of the rotating seat;

[0035] (3) By arranging the flange bracket, the rotating bracket and the horizontal cylinder, the center of gravity of the clamping unit can be adjusted to prevent the assembly sling from tipping over due to unstable center of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a front view of an assembly hanger for an engine camshaft of the utility model;

[0038] Figure 2 It is a three-dimensional view of a clamping unit in an assembly hanger for an engine camshaft of the utility model;

[0039] Figure 3 It is a cross-sectional view of a supporting block in an assembly hanger for an engine camshaft of the utility model;

[0040] Figure 4 It is a three-dimensional view of the rotating seat in the assembly hanger for the engine camshaft of the utility model;

[0041] Figure 5 It is a three-dimensional view of the connecting rod of an assembly hanger for an engine camshaft of the utility model;

[0042] Figure 6 The utility model is a front view of a fixed arm of an assembly hanger for an engine camshaft.

[0043] Among them: 1. bracket; 11. fixed arm; 111. flange bracket; 112. rotating bracket; 113. horizontal cylinder; 114. connecting bracket; 115. positioning cylinder; 12. rotating seat; 121. fixed cylinder; 122. rotating shaft; 123. hand wheel; 2. clamping unit; 21. fixed seat; 22. clamping claw; 23. holding block; 24. clamping cylinder; 25. connecting rod; 26. protective cover; 201. holding groove; 2011. reducing groove; 2012. equal diameter groove; 3. limit plate. DETAILED DESCRIPTION

[0044] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] like Figure 1-6 As shown, an assembly hanger for an engine camshaft of the utility model comprises a bracket 1, a clamping unit 2 and two limit plates 3.

[0046] The bracket 1 is used to support other components and to be fixedly connected to a lifting device.

[0047] As a preferred embodiment, the bracket 1 includes a fixed arm 11 and a rotating base 12 .

[0048] like Figure 6 As shown, the fixed arm 11 includes a flange bracket 111, a rotating bracket 112, a horizontal cylinder 113, a connecting bracket 114 and a positioning cylinder 115, wherein one end of the rotating bracket 112 is rotatably set on the flange bracket 111, and the other end is connected to the rotating seat 12, and the rotating bracket 112 rotates in a vertical plane relative to the flange bracket 111; the horizontal cylinder 113 is rotatably set on one of the flange bracket 111 and the rotating bracket 112, and its output end is rotatably set on the other of the flange bracket 111 and the rotating bracket 112. When the output end of the horizontal cylinder 113 is extended and retracted, the rotating bracket 112 can be driven to rotate, thereby driving The position and angle of the clamping unit 2 move, which can not only adjust the clamping position of the camshaft, but also adjust the center of gravity of the assembly sling to ensure the stability of the assembly sling; the connecting bracket 114 is rotatably set on the flange bracket 111, and the two are coaxially set; the positioning cylinder 115 is fixedly set on the connecting bracket 114, and its output end selectively abuts against the peripheral side of the flange bracket 111, and the connecting bracket 114 is fixedly connected to the lifting equipment. When the flange bracket 111 is rotated to a suitable position, the output end of the positioning cylinder 115 can be controlled to extend to abut against the connecting bracket 114, thereby preventing the connecting bracket 114 from rotating relative to the lifting equipment.

[0049] The rotating seat 12 includes a fixed cylinder 121, a rotating shaft 122 and a hand wheel 123. The fixed cylinder 121 is fixedly arranged on the fixed arm 11; the rotating shaft 122 is arranged through the fixed cylinder 121 and is rotatably connected thereto; the hand wheel 123 is fixedly arranged at one end of the rotating shaft 122, and the other end of the rotating shaft 122 is fixed to the clamping unit 2. At this time, the hand wheel 123 can be used to rotate the rotating shaft 122 and the clamping unit 2, so that the camshaft can adapt to the assembly environment.

[0050] The clamping unit 2 is used for clamping and fixing the camshaft, and the clamping unit 2 includes a fixed seat 21, a plurality of clamping jaws 22 and a holding block 23, wherein the fixed seat 21 is fixedly arranged on the bracket 1; the clamping jaws 22 are rotatably arranged on the fixed seat 21, and the rotation of the clamping jaws 22 is utilized to realize the opening and closing of the plurality of clamping jaws 22 so as to clamp and fix the camshaft; the holding block 23 is fixedly arranged at one end of the fixed seat 21 close to the clamping jaws 22, and its position is approximately located in the middle of the clamping jaws 22, and a holding groove 201 is provided on the side of the holding block 23 away from the fixed seat 21. When the plurality of clamping jaws 22 clamp the camshaft, one end of the camshaft is clamped in the holding groove 201. During the assembly process of the camshaft, even if the camshaft is subjected to axial thrust, it will not slide with the clamping jaws 22, thereby improving the fixing firmness of the clamping unit 2 and the assembly accuracy of the camshaft.

[0051] With regard to the shape of the supporting groove 201, it is preferred that the supporting groove 201 include a reducing groove 2011 and a constant diameter groove 2012, wherein the inner diameter of the reducing groove 2011 gradually increases from its end close to the fixing seat 21 to its end away from the fixing seat 21; the constant diameter groove 2012 is located at the end of the reducing groove 2011 close to the fixing seat 21 and is connected thereto, that is, the inner diameter of the reducing groove 2011 gradually decreases from the outside to the inside, and when the inner diameter of the constant diameter groove 2012 is equal to the outer diameter of the camshaft, the reducing groove 2011 can allow the end of the camshaft to be more easily inserted into the constant diameter groove 2012; at the same time, the reducing groove 2011 can also be adapted to camshafts of different specifications, thereby being clamped to camshafts of different outer diameters.

[0052] like Figure 3 As shown, it is preferred that the inner diameter of the reducing groove 2011 near one end of the fixing seat 21 is equal to the inner diameter of the equal diameter groove 2012, and the two are coaxially arranged so that the two are continuous and coaxial so that the camshaft end can be clamped therewith.

[0053] Correspondingly, it is preferred that a plurality of clamping jaws 22 are arranged in a circular array about the center line of the equal-diameter groove 2012, and the number of the clamping jaws 22 is preferably set to 3, so as to better clamp the camshaft.

[0054] The clamping unit 2 also includes a clamping cylinder 24, a connecting rod 25 and a protective cover 26, wherein the clamping cylinder 24 is fixedly arranged in the fixed seat 21; the two ends of the connecting rod 25 are rotatably arranged on the output shaft of the clamping cylinder 24 and the end of the clamping jaw 22 close to the fixed seat 21, respectively, and the connecting rod 25 corresponds to the clamping jaw 22 one by one; when the output end of the clamping cylinder 24 is extended and retracted, the clamping jaw 22 can be driven to rotate by the transmission of the connecting rod 25, thereby realizing the automatic opening and closing of multiple clamping jaws 22; the protective cover 26 is fixedly arranged on the fixed seat 21, and the end of the clamping jaw 22 close to the fixed seat 21 is located in the protective cover 26, such as Figure 2 As shown, the protective cover 26 can prevent impurities from entering the connection between the clamping jaw 22 and the fixing seat 21 , and can also prevent the clamping jaw 22 from opening and closing at a large angle, thereby providing a certain protective effect on the clamping jaw 22 .

[0055] The limit plate 3 is used to limit the rotation angle of the rotating seat 12. The two limit plates 3 are respectively fixed on the fixed cylinder 121 and the fixed seat 21, and the two limit plates 3 are selectively abutted against each other. Figure 4 As shown, at this time, the two limit plates 3 are against each other. When the hand wheel 123 is rotated to move the limit plate 3 on the rotating shaft 122 upward, the two limit plates 3 are against each other, so that the hand wheel 123 cannot be rotated, but the hand wheel 123 can be rotated in the opposite direction until the limit plate 3 on the rotating shaft 122 is against the other end of the limit plate 3 on the fixed cylinder 121. The setting of the limit plate 3 allows the rotating shaft 122 to only rotate back and forth, but not to rotate infinitely in one direction, which is beneficial to reduce the wear of the rotating shaft 122.

[0056] The method of using the assembly hanger for an engine camshaft of the utility model is as follows:

[0057] The assembly sling is installed on the lifting device. First, the clamping cylinder 24 is controlled to extend to open the multiple jaws 22. Then, the jaws 22 are moved to the end of the camshaft by the movement of the lifting device and the rotation of the rotating bracket 112 and the flange bracket 111. The clamping cylinder 24 is controlled to contract so that the jaws 22 clamp the end of the camshaft and allow this end to be stuck in the supporting groove 201. Finally, the lifting and movement of the lifting device is coordinated with the rotation of the rotating bracket 112 and the flange bracket 111 to move the camshaft to the position of the engine cylinder block for assembly. During this period, the center of gravity of the assembly sling can also be adjusted by controlling the horizontal cylinder 113 to ensure the stability of the camshaft transfer operation.

[0058] 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 should be included in the protection scope of the present invention.

Claims

1. An assembly hanger for an engine camshaft, characterized in that: The invention comprises a bracket (1) and a clamping unit (2), wherein the clamping unit (2) comprises a fixing seat (21), a plurality of clamping claws (22) and a holding block (23), wherein: The bracket (1) is used for fixed connection with the lifting equipment; The fixing seat (21) is fixedly arranged on the bracket (1); The clamping claw (22) is rotatably disposed on the fixing seat (21); The supporting block (23) is fixedly arranged at one end of the fixing seat (21) close to the clamping claw (22), and a supporting groove (201) is provided on a side away from the fixing seat (21). When a plurality of the clamping claws (22) clamp the camshaft, one end of the camshaft is clamped in the supporting groove (201).

2. An assembly hanger for an engine camshaft as claimed in claim 1, characterized in that: The abutting groove (201) comprises a reducing groove (2011) and a constant diameter groove (2012), wherein: The inner diameter of the variable diameter groove (2011) gradually increases along the direction from the end close to the fixing seat (21) to the end away from the fixing seat (21); The equal-diameter groove (2012) is located at one end of the variable-diameter groove (2011) close to the fixing seat (21) and is in communication therewith.

3. An assembly hanger for an engine camshaft as claimed in claim 2, characterized in that: The inner diameter of the variable diameter groove (2011) at one end close to the fixing seat (21) is equal to the inner diameter of the equal diameter groove (2012), and the two are coaxially arranged.

4. An assembly hanger for an engine camshaft as claimed in claim 3, characterized in that: The plurality of clamping jaws (22) are arranged in a circular array about the center line of the equal-diameter groove (2012).

5. An assembly hanger for an engine camshaft as claimed in claim 4, characterized in that: The clamping unit (2) further comprises a clamping cylinder (24) and a connecting rod (25), wherein: The clamping cylinder (24) is fixedly arranged in the fixing seat (21); The two ends of the connecting rod (25) are rotatably arranged on the output shaft of the clamping cylinder (24) and on one end of the clamping claw (22) close to the fixing seat (21), and the connecting rod (25) corresponds to the clamping claw (22) one by one.

6. The engine camshaft assembly hanger according to claim 4, characterized in that: The clamping unit (2) further comprises a protective cover (26), wherein the protective cover (26) is fixedly arranged on the fixing seat (21), and one end of the clamping jaw (22) close to the fixing seat (21) is located inside the protective cover (26).

7. The assembly hanger for an engine camshaft according to claim 1, characterized in that: The support (1) comprises a fixed arm (11) and a rotating seat (12), wherein the rotating seat (12) comprises a fixed cylinder (121), a rotating shaft (122) and a hand wheel (123), wherein: One end of the fixed arm (11) is used for fixed connection with the lifting equipment; The fixing cylinder (121) is fixedly arranged on the fixing arm (11); The rotating shaft (122) is disposed through the fixed cylinder (121) and is rotatably connected thereto; The fixing seat (21) is fixedly arranged at one end of the rotating shaft (122), and the hand wheel (123) is fixedly arranged at the other end of the rotating shaft (122).

8. An assembly hanger for an engine camshaft as claimed in claim 7, characterized in that: It also comprises two limit plates (3), the two limit plates (3) are respectively fixedly arranged on the fixing cylinder (121) and the fixing seat (21), and the two limit plates (3) are selectively abutted against each other.

9. An assembly hanger for an engine camshaft as claimed in claim 8, characterized in that: The fixed arm (11) comprises a flange bracket (111), a rotating bracket (112) and a horizontal cylinder (113), wherein: One end of the rotating bracket (112) is rotatably arranged on the flange bracket (111), and the other end is connected to the rotating seat (12), and the rotating bracket (112) rotates in a vertical plane relative to the flange bracket (111); The horizontal cylinder (113) is rotatably arranged on one of the flange bracket (111) and the rotating bracket (112), and its output end is rotatably arranged on the other of the flange bracket (111) and the rotating bracket (112).

10. An assembly hanger for an engine camshaft as claimed in claim 9, characterized in that: The fixed arm (11) further comprises a connecting bracket (114) and a positioning cylinder (115), wherein: The connecting bracket (114) is rotatably arranged on the flange bracket (111), and the two are coaxially arranged; The positioning cylinder (115) is fixedly arranged on the connecting bracket (114), and its output end selectively abuts against the peripheral side of the flange bracket (111).

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