Crankshaft chain wheel assembling device

Abstract

The invention discloses a crankshaft chain wheel assembling device, which relates to the technical field of crankshaft chain wheel installation, and adopts the technical scheme that the crankshaft chain wheel assembling device comprises a workbench which is a square mechanism, a positioning mechanism which is arranged at the top of the workbench and is used for positioning a crankshaft body, and an assembling mechanism, the assembling mechanism is arranged at the top of the workbench, located on one side of the positioning mechanism, used for assembling the crankshaft chain wheel and comprises a transverse plate, the transverse plate is fixedly connected to the top of the workbench, one side of the transverse plate is fixedly connected with a hydraulic rod, one end of the hydraulic rod is fixedly connected with a moving plate, and the top of the moving plate is fixedly connected with a mounting disc; the crankshaft chain wheel assembling device has the beneficial effects that the crankshaft chain wheel assembling efficiency is greatly improved, meanwhile, the device adopts an advanced heating mode to enable an inner ring of a chain wheel to expand, the chain wheel can be arranged on the outer side of a crankshaft in a sleeving mode more conveniently, and the chain wheel is prevented from deforming.

Description

Technical Field

[0001] The invention relates to the technical field of crankshaft sprocket installation, and in particular to a crankshaft sprocket assembly device. Background Art

[0002] In the past, in an internal combustion engine such as a vehicle engine, a crankshaft penetrates the main body of the internal combustion engine including a cylinder block, and one axial end of the crankshaft protrudes outside the cylinder block. In addition, a cylinder head is installed on the upper part of the cylinder block. An intake camshaft and an exhaust camshaft are arranged on the cylinder head. And each camshaft is driven to rotate by the crankshaft through a camshaft driving mechanism.

[0003] During the installation of existing crankshaft sprockets, the sprocket is generally squeezed to the outside of the crankshaft manually or hydraulically. However, the strong external force may cause the sprocket to deform, affecting the use of subsequent products. At the same time, the strong extrusion may also cause damage to the crankshaft surface, causing economic losses to the producer. Summary of the invention

[0004] To this end, the present invention provides a crankshaft sprocket assembly device, wherein the user places the crankshaft body between two positioning fixtures, wherein the transmission motor works and the crankshaft is positioned by the positioning mechanism. After the positioning is completed, the crankshaft sprocket is sleeved on the outside of the connecting shaft, and the inner ring is heated by a heating component to soften and expand, and then the crankshaft sprocket is sleeved on the crankshaft surface by the assembly mechanism, thereby achieving the effect of stable assembly, so as to solve the problem that strong external force extrusion may cause the sprocket to deform, affecting the use of subsequent products, and at the same time, strong extrusion may also cause damage to the crankshaft surface, causing economic losses to the producer.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a crankshaft sprocket assembly device, comprising

[0006] A workbench, wherein the workbench is configured as a square structure;

[0007] A positioning mechanism, which is arranged on the top of the workbench and is used to position the crankshaft body;

[0008] An assembly mechanism, which is arranged on the top of the workbench and located on one side of the positioning mechanism, and is used to assemble the crankshaft sprocket;

[0009] The assembly mechanism includes a horizontal plate, which is fixedly connected to the top of the workbench. A hydraulic rod is fixedly connected to one side of the horizontal plate, and a movable plate is fixedly connected to one end of the hydraulic rod. A mounting plate is fixedly connected to the top of the movable plate, and heating components are arranged on both sides of the mounting plate.

[0010] Preferably, the positioning mechanism includes a transmission motor, a positioning plate is fixedly connected to the top of the workbench, the transmission motor is arranged on one side of the positioning plate, the output end of the transmission motor is fixedly connected to a transmission shaft, and two threaded rods are fixedly sleeved on the outer side of the transmission shaft, and the threads of the two threaded rods are in opposite directions.

[0011] Preferably, sliding blocks are sleeved on the outer sides of the two threaded rods, the two sliding blocks are configured as square structures, one side of the two sliding blocks is fitted with the positioning plate, and the tops of the two sliding blocks are fixedly connected with telescopic rods.

[0012] Preferably, a connecting rod is fixedly connected to one side of the top of the two telescopic rods, a connecting groove is opened on the outer side of the positioning plate, the two connecting rods pass through the connecting groove, and two connecting blocks are provided on the other side of the positioning plate, and the two connecting blocks are fixedly connected to the two connecting rods respectively.

[0013] Preferably, the positioning mechanism also includes two positioning clamps, which are respectively fixedly connected to the two connecting blocks, and a connecting shaft is fixedly provided on the other side of the positioning plate. The bottom ends of the two positioning clamps are both sleeved on the outside of the connecting shaft and movably connected to the connecting shaft through hinges.

[0014] Preferably, the heating assembly includes a movable shaft, which is arranged inside the mounting disk and slides with the mounting disk. A baffle is provided on the outer fixed sleeve of one end of the movable shaft, and an electric heater is fixedly embedded on the other end of the movable shaft. The input end of the electric heater extends into the interior of the movable shaft. A heating ring is provided at one end of the electric heater, and the heating ring is arranged on one side of the baffle.

[0015] Preferably, the assembly mechanism also includes a movable plate, which is arranged on one side of the electric heater, and movable blocks are fixedly connected on both sides of the movable plate, and limiting rods are embedded in the two movable blocks. The movable blocks slide with the limiting rods, and springs are fixedly connected on one side of the two movable blocks, and the two springs are respectively mounted on the outside of the two limiting rods.

[0016] Preferably, the assembly mechanism also includes two stabilizing plates, the two stabilizing plates are fixedly connected to one side of the mounting plate, the top and bottom of the two stabilizing plates are fixedly connected to electric push rods, the outer ends of multiple electric push rods are fixedly connected to lifting plates, two lifting rods are fixedly connected between the multiple lifting plates, two lifting slots are provided inside the mounting plate, the two lifting rods respectively pass through the two lifting slots, two lifting blocks are provided on the other side of the mounting plate, and the two lifting blocks are respectively fixed to one end of the two lifting rods.

[0017] Preferably, two arc grooves are provided on one side of the two lifting blocks, and movable rods are embedded in the arc grooves. The movable rods slide with the two lifting blocks respectively, and the movable rods are designed to be embedded, so they will not be separated. One end of the movable rods is fixedly connected to a moving rod;

[0018] The multiple movable rods can only slide forward and backward with the lifting block and will not slide horizontally left and right, so the multiple movable rods will not fall off the lifting block.

[0019] Preferably, positioning strips are provided on the top and bottom of the connecting shaft, and the two positioning strips are made of rubber material. Meshing racks are fixedly embedded in the two positioning strips, and two limiting slide rails are fixedly connected to the outside of the two positioning strips. Limiting sliders are embedded in multiple limiting slide rails, and multiple limiting sliders are fixedly connected to multiple moving rods respectively.

[0020] The beneficial effects of the present invention are:

[0021] The user places the crankshaft body between two positioning fixtures, wherein the transmission motor works, and the crankshaft is positioned by the positioning mechanism. After the positioning is completed, the crankshaft sprocket is sleeved on the outside of the connecting shaft, and the inner ring is softened and expanded by the heating component, and then the crankshaft sprocket is sleeved on the crankshaft surface by the assembly mechanism, which has the effect of stable assembly, so as to solve the problem that strong external force extrusion may cause the sprocket to deform, affecting the use of subsequent products, and strong extrusion may also cause damage to the crankshaft surface, causing economic losses to the producer. The present invention greatly improves the efficiency of crankshaft sprocket assembly, and at the same time, the device adopts the method of pre-heating to expand the inner ring of the sprocket, which is more convenient for the sprocket to be sleeved on the outside of the crankshaft to prevent the sprocket from deformation. In addition, the device will not cause damage to the crankshaft surface, which greatly guarantees the quality of the product, reduces the loss of production cost, and brings great benefits to the producer.

[0022] In addition, the device adopts meshing positioning rubber strips, so that the sprocket will not rotate during installation, which greatly ensures the stability of the crankshaft sprocket assembly and makes the product work more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0024] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0025] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0026] Figure 2 A right-side stereoscopic schematic diagram of the overall structure provided by the present invention;

[0027] Figure 3 A schematic diagram of the three-dimensional structure of the positioning mechanism provided by the present invention;

[0028] Figure 4 The present invention provides Figure 3 A in the enlarged view;

[0029] Figure 5 A schematic diagram of the three-dimensional structure of the heating assembly provided by the present invention;

[0030] Figure 6 A schematic diagram of the three-dimensional structure of the partial assembly mechanism provided by the present invention;

[0031] Figure 7 The present invention provides Figure 6 The enlarged view of point B in the figure;

[0032] In the figure: 1 workbench; 2 horizontal plate; 3 hydraulic rod; 4 movable plate; 5 mounting plate; 6 transmission motor; 7 positioning plate; 8 transmission shaft; 9 threaded rod; 10 sliding block; 11 telescopic rod; 12 connecting rod; 13 connecting groove; 14 connecting block; 15 positioning fixture; 16 connecting shaft; 17 movable shaft; 18 baffle; 19 electric heater; 20 heating ring; 21 movable plate; 22 movable block; 23 limiting rod; 24 spring; 25 stabilizing plate; 26 electric push rod; 27 lifting plate; 28 lifting rod; 29 lifting groove; 30 lifting block; 31 arc groove; 32 movable rod; 33 moving rod; 34 positioning rubber strip; 35 meshing rack; 36 limiting slide rail; 37 limiting slider. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0034] See attached Figure 1 -Attached Figure 7 The present invention provides a crankshaft sprocket assembly device, comprising:

[0035] Workbench 1, workbench 1 is set as a square structure;

[0036] A positioning mechanism, which is arranged on the top of the workbench 1 and is used to position the crankshaft body;

[0037] An assembly mechanism, which is arranged on the top of the workbench 1 and located on one side of the positioning mechanism, and is used to assemble the crankshaft sprocket;

[0038] The assembly mechanism includes a horizontal plate 2, which is fixedly connected to the top of the workbench 1, a hydraulic rod 3 is fixedly connected to one side of the horizontal plate 2, a movable plate 4 is fixedly connected to one end of the hydraulic rod 3, a mounting plate 5 is fixedly connected to the top of the movable plate 4, and heating components are arranged on both sides of the mounting plate 5;

[0039] In this embodiment, the user places the crankshaft body between the two positioning fixtures 15, wherein the transmission motor 6 is working, and the crankshaft is positioned by the positioning mechanism. After the positioning is completed, the crankshaft sprocket is sleeved on the outside of the connecting shaft 16, and the inner ring is heated by the heating component to soften and expand, and then the crankshaft sprocket is sleeved on the crankshaft surface by the assembly mechanism, which has the effect of stabilizing the assembly;

[0040] Among them, in order to achieve the purpose of crankshaft positioning, the present device adopts the following technical solutions: the positioning mechanism includes a transmission motor 6, a positioning plate 7 is fixedly connected to the top of the workbench 1, the transmission motor 6 is arranged on one side of the positioning plate 7, and a transmission shaft 8 is fixedly connected to the output end of the transmission motor 6. Two threaded rods 9 are fixedly sleeved on the outer side of the transmission shaft 8. The threads of the two threaded rods 9 are in opposite directions. Sliding blocks 10 are sleeved on the outer sides of the two threaded rods 9. The two sliding blocks 10 are both set as square structures. One side of the two sliding blocks 10 is in contact with the positioning plate 7. The tops of the two sliding blocks 10 are fixedly connected with telescopic Rod 11, one side of the top of the two telescopic rods 11 is fixedly connected with a connecting rod 12, a connecting groove 13 is opened on the outer side of the positioning plate 7, and the two connecting rods 12 are penetrated into the connecting groove 13, and two connecting blocks 14 are provided on the other side of the positioning plate 7, and the two connecting blocks 14 are respectively fixedly connected to the two connecting rods 12. The positioning mechanism also includes two positioning fixtures 15, and the two positioning fixtures 15 are respectively fixedly connected to the two connecting blocks 14. A connecting shaft 16 is fixedly provided on the other side of the positioning plate 7, and the bottom ends of the two positioning fixtures 15 are both sleeved on the outer side of the connecting shaft 16 and are movably connected to the connecting shaft 16 through a hinge;

[0041] The user places the crankshaft body inside the two positioning fixtures 15, and starts the transmission motor 6. The transmission motor 6 drives the transmission shaft 8 and the two threaded rods 9 to rotate. The rotation of the two threaded rods 9 drives the two sliding blocks 10 and the telescopic rod 11 to move. Since the threads of the two threaded rods 9 are in opposite directions, the two sliding blocks 10 move toward the middle. The movement of the two telescopic rods 11 drives the two connecting rods 12 and the connecting block 14 to move. The movement of the two connecting blocks 14 drives the two positioning fixtures 15 to rotate with the connecting shaft 16 as the center of the circle, so that the two positioning fixtures 15 are assembled to clamp and position the crankshaft body.

[0042] Among them, in order to achieve the purpose of assembly, the present device adopts the following technical solutions: the assembly mechanism also includes a movable plate 21, the movable plate 21 is arranged on one side of the electric heater 19, and movable blocks 22 are fixedly connected on both sides of the movable plate 21, and limit rods 23 are embedded in the two movable blocks 22. The movable blocks 22 slide with the limit rods 23, and one side of the two movable blocks 22 is fixedly connected with springs 24. The two springs 24 are respectively sleeved on the outside of the two limit rods 23. The assembly mechanism also includes two stabilizing plates 25, the two stabilizing plates 25 are fixedly connected to one side of the installation disk 5, and the top and bottom of the two stabilizing plates 25 are fixedly connected. The outer ends of the multiple electric push rods 26 are fixedly connected to lifting plates 27, and two lifting rods 28 are fixedly connected between the multiple lifting plates 27. Two lifting slots 29 are provided inside the installation disk 5, and the two lifting rods 28 pass through the two lifting slots 29 respectively. Two lifting blocks 30 are provided on the other side. The two lifting blocks 30 are respectively fixed on one end of the two lifting rods 28. Two arc grooves 31 are provided on one side of the two lifting blocks 30. A plurality of movable rods 32 are embedded inside the plurality of arc grooves 31. The plurality of movable rods 32 slide with the two lifting blocks 30 respectively. The plurality of movable rods 32 are all designed as embedded. They can only slide forward and backward with the lifting blocks 30 but not slide horizontally left and right. Therefore, they will not be separated. One end of the plurality of movable rods 32 is fixedly connected with a moving rod 33. Positioning rubber strips 34 are provided on the top and bottom of the connecting shaft 16. The two positioning rubber strips 34 are made of rubber material. Meshing racks 35 are fixedly embedded inside the two positioning rubber strips 34. Two limiting slide rails 36 are fixedly connected to the outer sides of the two positioning rubber strips 34. A limiting slider 37 is embedded inside the plurality of limiting slide rails 36. The plurality of limiting sliders 37 are respectively fixedly connected with the plurality of moving rods 33.

[0043] The user sets the crankshaft sprocket on the movable shaft 17, starts the multiple electric push rods 26 to work, and the multiple electric push rods 26 shrink to drive the two lifting rods 28 and the lifting block 30 to move toward the middle, and the lifting block 30 moves to drive the multiple movable rods 32 and the moving rod 33 to move downward, thereby driving the two positioning rubber strips 34 to move downward, so that the two positioning rubber strips 34 wrap the crankshaft sprocket. At this time, the two positioning rubber strips 34 are bent and deformed, and the meshing racks 35 inside the two positioning rubber strips 34 position and mesh with the sprocket, so that the sprocket structure is more stable. After the positioning is completed, the user controls the hydraulic rod 3 to extend so that the sprocket is set on the outside of the crankshaft, which has an assembly effect;

[0044] In order to achieve the purpose of heating the inner ring of the sprocket, the device adopts the following technical solutions: the heating component includes a movable shaft 17, the movable shaft 17 is arranged inside the mounting plate 5, the movable shaft 17 slides with the mounting plate 5, a baffle 18 is fixedly sleeved on the outer side of one end of the movable shaft 17, an electric heater 19 is fixedly embedded at the other end of the movable shaft 17, the input end of the electric heater 19 extends to the inside of the movable shaft 17, a heating ring 20 is arranged at one end of the electric heater 19, and the heating ring 20 is arranged on one side of the baffle 18;

[0045] The user starts the electric heater 19 to make the heating ring 20 heat the inner ring of the crankshaft sprocket at a high temperature, so that the inner ring of the crankshaft sprocket softens and expands, which is convenient for the next installation work.

[0046] The use process of the present invention is as follows: the user places the crankshaft body inside the two positioning fixtures 15, starts the transmission motor 6, the transmission motor 6 drives the transmission shaft 8 and the two threaded rods 9 to rotate, the two threaded rods 9 rotate to drive the two sliding blocks 10 and the telescopic rod 11 to move, because the threads of the two threaded rods 9 are in opposite directions, the two sliding blocks 10 move toward the middle, the movement of the two telescopic rods 11 drives the two connecting rods 12 and the connecting block 14 to move, the movement of the two connecting blocks 14 drives the two positioning fixtures 15 to rotate with the connecting shaft 16 as the center, so that the two positioning fixtures 15 are assembled to clamp and position the crankshaft body, the user sets the crankshaft sprocket on the movable shaft 17, starts the multiple electric push rods 26 to work, The contraction of multiple electric push rods 26 drives the two lifting rods 28 and the lifting block 30 to move toward the middle. The movement of the lifting block 30 drives the multiple movable rods 32 and the movable rod 33 to move downward, thereby driving the two positioning strips 34 to move downward, so that the two positioning strips 34 wrap the crankshaft sprocket. At this time, the two positioning strips 34 are bent and deformed, and the meshing racks 35 inside the two positioning strips 34 position and mesh the sprocket, making the sprocket structure more stable. The user starts the electric heater 19 to make the heating ring 20 heat the inner ring of the crankshaft sprocket at a high temperature, so that the inner ring of the crankshaft sprocket softens and expands, which is convenient for the next installation work. After the positioning is completed, the user controls the hydraulic rod 3 to extend so that the sprocket sleeve is arranged on the outside of the crankshaft, which has the effect of assembly.

[0047] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A crankshaft sprocket assembly device, characterized in that: include A workbench (1), wherein the workbench (1) is configured as a square structure; A positioning mechanism, the positioning mechanism being arranged on the top of the workbench (1) and being used for positioning the crankshaft body; An assembly mechanism, the assembly mechanism is arranged on the top of the workbench (1) and located on one side of the positioning mechanism, and the assembly mechanism is used to assemble the crankshaft sprocket; The assembly mechanism comprises a horizontal plate (2), the horizontal plate (2) is fixedly connected to the top of the workbench (1), a hydraulic rod (3) is fixedly connected to one side of the horizontal plate (2), a movable plate (4) is fixedly connected to one end of the hydraulic rod (3), a mounting plate (5) is fixedly connected to the top of the movable plate (4), and heating components are provided on both sides of the mounting plate (5).

2. A crankshaft sprocket assembly device according to claim 1, characterized in that: The positioning mechanism comprises a transmission motor (6), a positioning plate (7) is fixedly connected to the top of the workbench (1), the transmission motor (6) is arranged on one side of the positioning plate (7), the output end of the transmission motor (6) is fixedly connected to a transmission shaft (8), and two threaded rods (9) are fixedly sleeved on the outside of the transmission shaft (8), and the threads of the two threaded rods (9) are in opposite directions.

3. A crankshaft sprocket assembly device according to claim 2, characterized in that: The outer sides of the two threaded rods (9) are sleeved with sliding blocks (10), the two sliding blocks (10) are both arranged in a square structure, one side of the two sliding blocks (10) is in contact with the positioning plate (7), and the tops of the two sliding blocks (10) are fixedly connected with telescopic rods (11).

4. A crankshaft sprocket assembly device according to claim 3, characterized in that: A connecting rod (12) is fixedly connected to one side of the top of the two telescopic rods (11); a connecting groove (13) is provided on the outer side of the positioning plate (7); the two connecting rods (12) pass through the connecting groove (13); two connecting blocks (14) are provided on the other side of the positioning plate (7); the two connecting blocks (14) are fixedly connected to the two connecting rods (12) respectively.

5. A crankshaft sprocket assembly device according to claim 4, characterized in that: The positioning mechanism further comprises two positioning fixtures (15), the two positioning fixtures (15) are respectively fixedly connected to the two connecting blocks (14), a connecting shaft (16) is fixedly provided on the other side of the positioning plate (7), the bottom ends of the two positioning fixtures (15) are both sleeved on the outside of the connecting shaft (16) and are movably connected to the connecting shaft (16) through a hinge.

6. A crankshaft sprocket assembly device according to claim 1, characterized in that: The heating component comprises a movable shaft (17), the movable shaft (17) is arranged inside the mounting plate (5), the movable shaft (17) and the mounting plate (5) slide with each other, a baffle (18) is fixedly sleeved on the outer side of one end of the movable shaft (17), an electric heater (19) is fixedly embedded at the other end of the movable shaft (17), the input end of the electric heater (19) extends into the interior of the movable shaft (17), a heating ring (20) is provided at one end of the electric heater (19), and the heating ring (20) is arranged on one side of the baffle (18).

7. A crankshaft sprocket assembly device according to claim 2, characterized in that: The assembly mechanism further comprises a movable plate (21), the movable plate (21) being arranged on one side of the electric heater (19), movable blocks (22) being fixedly connected to both sides of the movable plate (21), limiting rods (23) being embedded inside the two movable blocks (22), the movable blocks (22) slidingly sliding with the limiting rods (23), springs (24) being fixedly connected to one side of the two movable blocks (22), and the two springs (24) being respectively sleeved on the outsides of the two limiting rods (23).

8. A crankshaft sprocket assembly device according to claim 4, characterized in that: The assembly mechanism further comprises two stabilizing plates (25), the two stabilizing plates (25) are fixedly connected to one side of the mounting plate (5), the top and bottom of the two stabilizing plates (25) are fixedly connected to electric push rods (26), the outer ends of the plurality of electric push rods (26) are fixedly connected to lifting plates (27), two lifting rods (28) are fixedly connected between the plurality of lifting plates (27), two lifting slots (29) are provided inside the mounting plate (5), the two lifting rods (28) respectively penetrate the two lifting slots (29), and two lifting blocks (30) are provided on the other side of the mounting plate (5), the two lifting blocks (30) are respectively fixed to one end of the two lifting rods (28).

9. A crankshaft sprocket assembly device according to claim 8, characterized in that: Two arc grooves (31) are provided on one side of the two lifting blocks (30), and movable rods (32) are embedded in the arc grooves (31). The movable rods (32) slide with the two lifting blocks (30) respectively, and the movable rods (32) are all designed as embedded, and one end of the movable rods (32) is fixedly connected to a moving rod (33).

10. The crankshaft sprocket assembly device according to claim 5, characterized in that: The top and bottom of the connecting shaft (16) are both provided with positioning rubber strips (34), the two positioning rubber strips (34) are both made of rubber material, the inside of the two positioning rubber strips (34) are both fixedly embedded with meshing racks (35), the outsides of the two positioning rubber strips (34) are both fixedly connected with two limiting slide rails (36), the insides of the plurality of limiting slide rails (36) are both embedded with limiting sliders (37), and the plurality of limiting sliders (37) are respectively fixedly connected to the plurality of moving rods (33).

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