Accurate positioning gear assembling device

Abstract

The utility model provides an accurate positioning gear assembly device, which relates to the technical field of gear assembly, and comprises a crankshaft timing gear guide sleeve, a positioning pin, a timing gear and a guide positioning component, the positioning pin is fixed on the crankshaft timing gear guide sleeve; a positioning pin hole matched with the positioning pin is formed in one end of the timing gear, and the timing gear can be arranged on an engine crankshaft in a sleeving mode through the crankshaft timing gear guide sleeve. The guiding and positioning component is detachably fixed to the crankshaft timing gear guiding sleeve and used for guiding the timing gear to be precisely arranged on an engine crankshaft in a sleeving mode. According to the crankshaft timing gear guide sleeve, the timing gear is inserted into the crankshaft timing gear guide sleeve through cooperation of the positioning pin and the positioning pin hole, then the positioning and guiding functions of the guiding and positioning component are utilized, the stability is higher when an operator holds the crankshaft timing gear guide sleeve by hand to install the timing gear on an engine crankshaft, the assembly difficulty is lowered, and the assembly efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of gear assembly, and in particular to an accurate positioning gear assembly device. Background Art

[0002] The timing gear is a gear that plays a role in time scale positioning in mechanical devices to complete related control functions. The timing gear is installed on the engine crankshaft. The assembly method is to heat the gear and press it into the small end of the crankshaft. Due to the working characteristics of its location, the gear has strict requirements on the circumferential position of the crankshaft connecting rod neck.

[0003] The positioning gear assembly device in the related technology is usually provided with a gear positioning pin, and a positioning pin hole adapted to the positioning pin is usually provided at the corresponding position of the timing gear. The timing gear can be plugged and installed on the end of the positioning gear assembly device by utilizing the cooperation of the gear positioning pin and the positioning pin hole.

[0004] However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application found that the above technology has at least the following technical problems:

[0005] The above scheme usually requires a handheld positioning gear assembly device to insert and position the timing gear on the engine crankshaft. However, when simply hand-holding the insertion and positioning, the assembly difficulty is difficult to reduce due to poor stability. Summary of the invention

[0006] In order to overcome the deficiency in the related art that the positioning gear assembly device can only be held by hand to assist the insertion of the timing gear onto the engine crankshaft, an embodiment of the present application provides an accurate positioning gear assembly device, and adds a guiding positioning component to the gear assembly device, so that the movement stability of the gear assembly device is improved, and the difficulty of assembling the timing gear onto the engine crankshaft is reduced.

[0007] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0008] An accurate positioning gear assembly device comprises a crankshaft timing gear guide sleeve, a positioning pin, a timing gear and a guide positioning component;

[0009] The positioning pin is fixed on the crankshaft timing gear guide sleeve;

[0010] A positioning pin hole adapted to the positioning pin is provided at one end of the timing gear, and the timing gear can be sleeved on the engine crankshaft through the crankshaft timing gear guide sleeve;

[0011] The guide positioning component is detachably fixed on the crankshaft timing gear guide sleeve and is used to guide the timing gear to be accurately sleeved on the engine crankshaft.

[0012] Furthermore, the outer wall of the timing gear is provided with a smooth section, and the positioning pin hole is designed close to the smooth section.

[0013] Furthermore, the crankshaft timing gear guide sleeve includes a sleeve shell and a handle fixed at its rear end, an inner wall of an opening at one end of the sleeve shell away from the handle is provided with an annular step groove, and the positioning pin is arranged at the annular step groove of the sleeve shell. When the smooth section of the timing gear is inserted into the annular step groove, the positioning pin is just inserted into the positioning pin hole.

[0014] Furthermore, the outer wall of the handle is provided with anti-slip patterns.

[0015] Furthermore, the guiding and positioning component includes an arc-shaped sleeve and a positioning block fixed at its opening. After being fixed, the inner walls of the arc-shaped sleeve and the positioning block form a circular cavity which can be mounted on the outer wall of the sleeve shell. The positioning block can be detachably installed on the outer wall of the sleeve shell. A guide hole is opened on the positioning block, and a guide rod is inserted through the guide hole, and one end of the guide rod is fixed on the engine.

[0016] Furthermore, the longitudinal section of the guide rod is non-circular in design.

[0017] Furthermore, a T-shaped plug-in rail is provided at the lower part of the positioning block, and a plug-in component which is plugged and fixed with the housing is provided in the plug-in rail;

[0018] The plug-in connector comprises a shifting block slidably connected to the plug-in rail, a spring is fixed between the shifting block and the inner top of the plug-in rail, and a docking hole matched with the shifting block is provided on the sleeve shell.

[0019] Furthermore, the shift block is designed to be L-shaped, and when the spring is in an extended state, two ends of the shift block respectively protrude to two surfaces of the corresponding positioning block.

[0020] The advantages of the embodiments of the present application are:

[0021] A guide positioning member is added to the crankshaft timing gear guide sleeve. Specifically, the timing gear is inserted into the crankshaft timing gear guide sleeve by the cooperation of the positioning pin and the positioning pin hole, and then the positioning and guiding function of the guide positioning member is utilized, so that the operator can hold the crankshaft timing gear guide sleeve to install the timing gear on the engine crankshaft with higher stability, lower assembly difficulty, and improved assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a gear assembly device for accurate positioning provided in an embodiment of the present application;

[0023] Figure 2A schematic diagram of the state structure of the accurate positioning gear assembly device provided in the embodiment of the present application when the timing gear is installed on the engine crankshaft;

[0024] Figure 3 A schematic diagram of the crankshaft timing gear guide sleeve structure provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the timing gear structure provided in an embodiment of the present application;

[0026] Figure 5 A schematic structural diagram of the connection relationship between the positioning block and the connector provided in an embodiment of the present application.

[0027] In the figure: 1-crankshaft timing gear guide sleeve; 11-sleeve shell; 111-annular stepped groove; 112-docking hole; 12-handle; 121-anti-slip pattern; 2-locating pin; 3-guide positioning member; 31-arc sleeve; 32-locating block; 321-guide hole; 322-plug-in rail; 33-guide rod; 34-plug-in component; 341-spring; 342-shift block; 4-timing gear; 41-smooth section; 42-locating pin hole. DETAILED DESCRIPTION

[0028] The technical solution in the embodiment of the present application is to solve the deficiency that the positioning gear assembly device in the related art can only be simply handheld to assist the timing gear in inserting into the engine crankshaft. The overall idea is as follows:

[0029] Embodiment 1:

[0030] like Figure 1-Figure 5 A gear assembly device for accurately positioning a gear includes a crankshaft timing gear guide sleeve 1, a positioning pin 2, a timing gear 4 and a guide positioning member 3;

[0031] The positioning pin 2 is fixed on the crankshaft timing gear guide sleeve 1;

[0032] A positioning pin hole 42 adapted to the positioning pin 2 is provided at one end of the timing gear 4, and the timing gear 4 can be sleeved onto the engine crankshaft through the crankshaft timing gear guide sleeve 1;

[0033] The guide positioning member 3 is detachably fixed on the crankshaft timing gear guide sleeve 1 and is used to guide the timing gear 4 to be accurately sleeved on the engine crankshaft.

[0034] In this embodiment, the timing gear 4 is inserted into the crankshaft timing gear guide sleeve 1 by the cooperation of the locating pin 2 and the locating pin hole 42, and then the positioning and guiding function of the guide positioning member 3 is utilized, so that the operator can hold the crankshaft timing gear guide sleeve 1 to install the timing gear 4 on the engine crankshaft with higher stability, reduced assembly difficulty, and improved assembly efficiency.

[0035] like Figure 4 As shown, the outer wall of the timing gear 4 is provided with a smooth section 41, and the positioning pin hole 42 is designed near the smooth section 41. The design of the smooth section 41 allows the timing gear 4 to be inserted into the annular stepped groove 111 of the crankshaft timing gear guide sleeve 1, and the cooperation of the positioning pin hole 42 and the positioning pin 2 can make the timing gear 4 and the crankshaft timing gear guide sleeve 1 more stable when plugged.

[0036] like Figure 1 As shown, the crankshaft timing gear guide sleeve 1 includes a sleeve shell 11 and a handle 12 fixed at its rear end. An annular step groove 111 is provided on the inner wall of the opening at one end of the sleeve shell 11 away from the handle 12. The positioning pin 2 is arranged at the annular step groove 111 of the sleeve shell 11. When the smooth section 41 of the timing gear 4 is inserted into the annular step groove 111, the positioning pin 2 is just inserted into the positioning pin hole 42.

[0037] like Figure 3 As shown, the outer wall of the handle 12 is provided with anti-skid lines 121. The design of the anti-skid lines 121 can increase the stability of the operator holding the handle 12.

[0038] like Figure 1 , Figure 3 and Figure 5 As shown, the guide positioning member 3 includes an arc sleeve 31 and a positioning block 32 fixed at its opening. The inner walls of the fixed arc sleeve 31 and the positioning block 32 form a circular cavity that can be sleeved on the outer wall of the sleeve shell 11. The positioning block 32 is detachably installed on the outer wall of the sleeve shell 11. A guide hole 321 is opened on the positioning block 32, and a guide rod 33 is inserted through the guide hole 321, and one end of the guide rod 33 is fixed on the engine. Among them, a screw hole (not shown) can be designed at the installation position of the guide rod 33 on the engine, and a screw rod (not shown) corresponding to the screw hole can be designed at the end of the guide rod 33, so as to quickly fix the guide rod 33 on the engine.

[0039] In this embodiment, one end of the guide rod 33 is fixed to the engine in advance, and then the guide rod 33 can be optionally inserted into the guide hole 321. During the assembly process, the timing gear 4 is slid toward the engine crankshaft along the guide rod 33 by pushing the crankshaft timing gear guide sleeve 1 forward, so that the timing gear 4 is inserted into the engine crankshaft. After cooling, the accurate assembly of the timing gear 4 is completed.

[0040] like Figure 1 The guide rod 33 has a non-circular longitudinal section. The non-circular guide rod 33 can prevent the crankshaft timing gear guide sleeve 1 from causing the timing gear 4 to deflect at an angle, thereby effectively improving the assembly accuracy of the timing gear 4.

[0041] like Figure 5As shown, a T-shaped plug-in rail 322 is provided at the lower portion of the positioning block 32, and a plug-in member 34 is provided in the plug-in rail 322 to be plugged and fixed with the housing 11;

[0042] The plug connector 34 includes a shift block 342 slidably connected to the plug rail 322 , a spring 341 is fixed between the shift block 342 and the inner top of the plug rail 322 , and a docking hole 112 matched with the shift block 342 is formed on the housing 11 .

[0043] In this embodiment, the upper shift block 342 compresses the spring 341, and the inner walls of the arc sleeve 31 and the positioning block 32 form a circular cavity that is sleeved on the outer wall of the sleeve shell 11. When the bottom end of the shift block 342 is facing the docking hole 112, the spring 341 restores the elastic force, and the shift block 342 automatically moves into the docking hole 112. In this way, the detachable installation of the guide positioning member 3 is completed, which reduces the replacement cost when the present application is damaged.

[0044] like Figure 5 As shown, the shift block 342 is designed in an L shape, and when the spring 341 is in an extended state, the two ends of the shift block 342 protrude to the two surfaces of the corresponding positioning block 32. The shift block 342 protrudes to the two surfaces of the corresponding positioning block 32, which makes it easy for the shift block 342 to be inserted into the docking hole 112, and also makes it easy for the operator to shift the shift block 342 when installing the guide positioning member 3.

[0045] When using this application:

[0046] One end of the guide rod 33 is fixed to the engine in advance, and then the guide rod 33 can be optionally inserted into the guide hole 321, and then the smooth section 41 of the heated timing gear 4 is inserted into the annular step groove 111, and at the same time, the locating pin 2 is ensured to be inserted into the locating pin hole 42, and the timing gear 4 is slid toward the engine crankshaft along the guide rod 33, so that the timing gear 4 is inserted into the engine crankshaft. After cooling, the accurate assembly of the timing gear 4 is completed.

[0047] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present application, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present application.

Claims

1. An accurate positioning gear assembly device, characterized in that: include: Crankshaft timing gear guide sleeve (1); A positioning pin (2) fixed on the crankshaft timing gear guide sleeve (1); A timing gear (4) having a positioning pin hole (42) adapted to the positioning pin (2) at one end, and the timing gear (4) can be sleeved onto the engine crankshaft through the crankshaft timing gear guide sleeve (1); The guiding and positioning component (3) is detachably fixed on the crankshaft timing gear guide sleeve (1) and is used to guide the timing gear (4) to be accurately sleeved on the engine crankshaft.

2. The accurate positioning gear assembly device according to claim 1, characterized in that: The outer wall of the timing gear (4) is provided with a smooth section (41), and the positioning pin hole (42) is designed close to the smooth section (41).

3. The accurate positioning gear assembly device according to claim 2, characterized in that: The crankshaft timing gear guide sleeve (1) comprises a sleeve shell (11) and a handle (12) fixed at the rear end thereof. An inner wall of an opening at one end of the sleeve shell (11) away from the handle (12) is provided with an annular stepped groove (111). The positioning pin (2) is arranged at the annular stepped groove (111) of the sleeve shell (11). When the smooth section (41) of the timing gear (4) is inserted into the annular stepped groove (111), the positioning pin (2) is just inserted into the positioning pin hole (42).

4. The accurate positioning gear assembly device according to claim 3, characterized in that: The outer wall of the handle (12) is provided with anti-slip patterns (121).

5. The accurate positioning gear assembly device according to claim 3, characterized in that: The guiding and positioning member (3) comprises an arc-shaped sleeve (31) and a positioning block (32) fixed at an opening thereof; the inner walls of the arc-shaped sleeve (31) and the positioning block (32) after being fixed form a circular cavity which can be sleeved on the outer wall of the sleeve shell (11); the positioning block (32) is detachably mounted on the outer wall of the sleeve shell (11); a guiding hole (321) is opened on the positioning block (32); a guiding rod (33) is inserted through the guiding hole (321); and one end of the guiding rod (33) is fixed on the engine.

6. The accurate positioning gear assembly device according to claim 5, characterized in that: The longitudinal section of the guide rod (33) is non-circular in design.

7. The accurate positioning gear assembly device according to claim 5, characterized in that: A T-shaped plug-in rail (322) is provided at the lower portion of the positioning block (32), and a plug-in component (34) plugged and fixed to the housing (11) is provided in the plug-in rail (322); The plug-in connector (34) comprises a shifting block (342) slidably connected to the plug-in rail (322), a spring (341) is fixed between the shifting block (342) and the inner top of the plug-in rail (322), and a docking hole (112) adapted to the shifting block (342) is provided on the housing (11).

8. The accurate positioning gear assembly device according to claim 7, characterized in that: The shift block (342) is designed to be L-shaped, and when the spring (341) is in an extended state, two ends of the shift block (342) respectively protrude to two surfaces of the corresponding positioning block (32).

Images