Engine balance shaft phase angle detection tool

Abstract

The invention discloses an engine balance shaft phase angle detection tool, and relates to the technical field of angle detection.The engine balance shaft phase angle detection tool comprises a base, a clamping assembly, a supporting assembly and a measuring assembly, the clamping assembly is arranged on the base and used for axially fixing a balance shaft, and the supporting assembly is arranged on the base; the supporting assembly is arranged on the base, located below the balance shaft and used for abutting against the plane of a balance shaft gear eccentric block, and the measuring assembly is arranged on the base, can horizontally slide on the base and is used for being attached to a tooth groove of the balance shaft so as to measure the phase angle of the tooth groove of the balance shaft. The phase angle of the balance shaft can be detected without using a three-coordinate measuring instrument, the phase angle of the balance shaft can be detected in real time on a processing site, the operation is simple, the detection efficiency is improved, and the detection cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of angle detection, and in particular to a tool for detecting the phase angle of an engine balance shaft. Background Art

[0002] The phase angle of the engine balance shaft is an important technical parameter for the installation of the balance shaft gear. After the master and slave balance shafts are installed, according to the technical conditions of the engine balance shaft assembly, the condition that the plane generated by the balance block and the center of the gear tooth groove need to meet is 0±1°. Therefore, detecting the phase angle of the balance shaft is an important task in the quality control of the engine balance shaft gear.

[0003] In the prior art, the phase angle of the balancing shaft is detected by using a three-coordinate measuring machine, but the three-coordinate measuring machine is large in size and difficult to detect in real time at the processing site, which reduces the detection efficiency. Summary of the invention

[0004] An embodiment of the present invention provides an engine balance shaft phase angle detection tool to solve the technical problem in the related art that when using a three-coordinate measuring machine to detect the balance shaft phase angle, the three-coordinate measuring machine is large in size and difficult to detect in real time at the processing site, thereby reducing the detection efficiency.

[0005] An embodiment of the present invention provides an engine balance shaft phase angle detection tool, comprising:

[0006] Base;

[0007] A clamping assembly, the clamping assembly is arranged on the base and is used to axially fix the balancing shaft;

[0008] A support assembly, the support assembly is arranged on the base and below the balancing shaft, and is used to abut against the plane of the eccentric block of the balancing shaft gear;

[0009] A measuring component is arranged on the base and can slide horizontally on the base, and is used to fit with the tooth groove of the balancing shaft to measure the phase angle of the tooth groove of the balancing shaft.

[0010] In some embodiments, the clamping assembly includes:

[0011] A left fixing seat, the left fixing seat being arranged on one side of the base;

[0012] A right fixing seat is arranged at the other side of the base, and a sliding rod is arranged inside the right fixing seat for cooperating with the left fixing seat to axially fix the balancing shaft.

[0013] In some embodiments, the clamping assembly further comprises:

[0014] A support frame is arranged on the base and located between the left fixing seat and the right fixing seat.

[0015] In some embodiments, the clamping assembly further comprises:

[0016] A gasket is arranged between the left fixing seat and the base, and is used for adjusting the height of the left fixing seat.

[0017] In some embodiments, the support assembly includes:

[0018] An eccentric wheel rod, wherein the eccentric wheel rod is arranged at the bottom of the base;

[0019] A lifting assembly, wherein the lifting assembly is arranged on the eccentric wheel rod, and the rotation of the eccentric wheel rod drives the lifting assembly to rise or fall in the vertical direction;

[0020] Two positioning ball heads are arranged at intervals on the lifting component, and the lifting component drives the two positioning ball heads to rise and abut against the plane of the eccentric block of the balance shaft gear.

[0021] In some embodiments, the lifting assembly includes:

[0022] A bottom plate, the bottom plate being arranged below the eccentric wheel rod;

[0023] Two push rods, the two push rods are arranged on the bottom plate at intervals in the vertical direction;

[0024] A top plate is arranged above the two push rods, and the rotation of the eccentric wheel rod drives the two push rods and the top plate to rise or fall in the vertical direction.

[0025] In some embodiments, two linear bearings are disposed on the base, and one of the push rods is correspondingly disposed in one of the linear bearings and can rise or fall in the linear bearing.

[0026] In some embodiments, a spring is provided on the base, and the spring is located between the two push rods and connected to the top plate.

[0027] In some embodiments, the measuring component comprises:

[0028] A measuring seat, which is arranged on the base and can slide horizontally on the base;

[0029] A measuring head, which is arranged at the top of the measuring seat and is used to fit with the tooth groove of the balancing shaft;

[0030] An elastic block, the elastic block is arranged in the measuring seat and connected to the measuring head;

[0031] A dial indicator is arranged above the measuring seat and connected to the elastic block, and is used to obtain the phase angle of the tooth groove of the balancing shaft.

[0032] In some embodiments, the engine balance shaft phase angle detection tool further includes:

[0033] A telescopic rod, which is arranged on the base and connected to the measuring seat;

[0034] A guide rail is arranged at the bottom of the measuring seat, and the telescopic rod drives the measuring seat to slide on the guide rail.

[0035] The beneficial effects brought about by the technical solution provided by the present invention include:

[0036] An embodiment of the present invention provides an engine balance shaft phase angle detection tool, comprising a base, a clamping assembly, a supporting assembly and a measuring assembly, wherein the clamping assembly is arranged on the base and is used to axially fix the balance shaft, the supporting assembly is arranged on the base and is located below the balance shaft, and is used to abut against the plane of the eccentric block of the balance shaft gear, the measuring assembly is arranged on the base and can slide horizontally on the base, and is used to fit with the tooth groove of the balance shaft to measure the phase angle of the tooth groove of the balance shaft. The phase angle of the balance shaft can be detected without using a three-coordinate measuring machine, and the phase angle of the balance shaft can be detected in real time at the processing site, the operation is simple, the detection efficiency is improved, and the detection cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the overall structure of an engine balance shaft phase angle detection tool provided by an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the side structure of an engine balance shaft phase angle detection tool provided by an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of the structure of a support assembly provided by an embodiment of the present invention;

[0041] Figure 4 A schematic diagram of the cross-sectional structure of the eccentric block of the balance shaft gear provided by an embodiment of the present invention;

[0042] Figure 5A schematic diagram of the structure of a measurement component provided by an embodiment of the present invention;

[0043] Reference numerals:

[0044] 1. Base; 11. Linear bearing; 12. Spring;

[0045] 2. Clamping assembly; 21. Left fixing seat; 22. Right fixing seat; 221. Sliding rod; 2211. First handle; 23. Support frame; 231. V-shaped support block; 24. Gasket;

[0046] 3. Support assembly; 31. Eccentric wheel rod; 311. Second handle; 32. Lifting assembly; 321. Bottom plate; 322. Push rod; 323. Top plate; 33. Positioning ball head;

[0047] 4. Measuring assembly; 41. Measuring seat; 42. Measuring head; 43. Elastic block; 44. Dial indicator;

[0048] 5. Balance shaft;

[0049] 6. Telescopic rod; 61. Third handle;

[0050] 7. Guide rail. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] An embodiment of the present invention provides an engine balance shaft phase angle detection tool, which can solve the technical problem in the related art that when using a three-coordinate measuring instrument to detect the balance shaft phase angle, the three-coordinate measuring instrument is large in size and difficult to detect in real time at the processing site, thereby reducing the detection efficiency.

[0053] Figure 1 An engine balance shaft phase angle detection tool provided by an embodiment of the present invention comprises: a base 1, a clamping component 2, a supporting component 3 and a measuring component 4.

[0054] The clamping assembly 2 is arranged on the base 1, and is used to axially fix the balancing shaft 5. The supporting assembly 3 is arranged on the base 1 and is located below the balancing shaft 5, and is used to abut against the plane of the eccentric block of the gear of the balancing shaft 5. The measuring assembly 4 is arranged on the base 1 and can slide horizontally on the base 1, and is used to fit with the tooth groove of the balancing shaft 5 to measure the phase angle of the tooth groove of the balancing shaft 5.

[0055] An engine balance shaft phase angle detection tool provided in an embodiment of the present invention is provided with a base, a clamping assembly, a supporting assembly and a measuring assembly. The clamping assembly is arranged on the base and is used to axially fix the balance shaft to prevent the balance shaft from being displaced during detection. The supporting assembly is arranged on the base and is located below the balance shaft, and is used to abut against the plane of the eccentric block of the balance shaft gear. The eccentric block of the balance shaft is kept in a horizontal state during measurement by the supporting assembly, thereby improving the accuracy of measurement and positioning. The measuring assembly is arranged on the base and can slide horizontally on the base, and is used to fit with the tooth groove of the balance shaft to measure the phase angle of the tooth groove of the balance shaft. The phase angle of the balance shaft can be accurately measured by the measuring assembly without using a three-coordinate measuring instrument, and the phase angle of the balance shaft can be detected in real time at the processing site. The operation is simple, the detection efficiency is improved, and the detection cost is reduced.

[0056] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the clamping assembly 2 includes: a left fixing seat 21 and a right fixing seat 22, wherein the left fixing seat 21 is arranged on one side of the base 1, and the right fixing seat 22 is arranged on the other side of the base 1, and a sliding rod 221 is arranged in the right fixing seat 22 for cooperating with the left fixing seat 21 to axially fix the balancing shaft 5, and a first handle 2211 is arranged on the sliding rod 221, and the first handle 2211 is rotated to drive the sliding rod 221 to slide in the right fixing seat 22, so that the balancing shaft 5 is placed between the left fixing seat 21 and the right fixing seat 22. The left end of the balancing shaft 5 abuts against the left fixed seat 21, and the first handle 2211 is rotated to drive the sliding rod 221 to slide and approach the left fixed seat 21, so that the sliding rod 221 abuts against the right end of the balancing shaft 5 and clamps the balancing shaft 5 to prevent the balancing shaft 5 from falling or displacement. After the measurement is completed, the first handle 2211 is rotated to drive the sliding rod 221 to slide and move away from the left fixed seat 21, so that the balancing shaft 5 is separated from the left fixed seat 21 and the right fixed seat 22.

[0057] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the clamping assembly 2 also includes: a support frame 23, which is arranged on the base 1 and located between the left fixed seat 21 and the right fixed seat 22. A V-shaped support block 231 is also provided on the support frame 23, and the V-shaped support block 231 matches the shape of the balancing shaft 5. When the balancing shaft 5 is fixed between the left fixed seat 21 and the right fixed seat 22, the support frame 23 plays a supporting and fixing role under the balancing shaft 5, and the V-shaped support block 231 is used to limit the rotation of the balancing shaft 5.

[0058] As an optional implementation, in an embodiment of the invention, see Figure 1 and Figure 2 As shown, the clamping assembly 2 also includes: a gasket 24, which is arranged between the left fixed seat 21 and the base 1, and is used to adjust the height of the left fixed seat 21. The left fixed seat 21 and the base 1 are detachably connected. According to the fixed height of the balancing shaft 5, the height of the left fixed seat 21 can be adjusted by replacing the gasket 24 of different thicknesses. The operation is simple, and the fixed height of the left fixed seat 21 is matched with that of the balancing shaft 5.

[0059] As an optional implementation, in an embodiment of the invention, see Figure 2 and Figure 3 As shown, the support assembly 3 includes: an eccentric wheel rod 31, a lifting assembly 32 and two positioning ball heads 33. The eccentric wheel rod 31 is arranged at the bottom of the base 1, and the lifting assembly 32 is arranged on the eccentric wheel rod 31. The rotation of the eccentric wheel rod 31 drives the lifting assembly 32 to rise or fall in the vertical direction. The two positioning ball heads 33 are arranged on the lifting assembly 32 at intervals. The lifting assembly 32 drives the two positioning ball heads 33 to rise and abut against the plane of the eccentric block of the gear of the balance shaft 5. The top of the eccentric wheel rod 31 is provided with a second handle 311. The second handle is rotated 311 drives the eccentric wheel rod 31 to rotate. When the eccentric wheel rod 31 rotates, due to its eccentric design, a greater force will be applied on one side. This torque will push the lifting assembly 32 to slide up and down in the vertical direction, thereby controlling the two positioning ball heads 33 to rise or fall. When the eccentric wheel rod 31 is rotated counterclockwise, the eccentric wheel rod 31 pushes the lifting assembly 32 to rise and then drives the two positioning ball heads 33 to rise and press against the plane of the eccentric block of the gear of the balancing shaft 5. The plane of the eccentric block of the gear of the balancing shaft 5 is the Z reference of the balancing shaft 5. For details, see Figure 4 As shown, the two supporting points of the two positioning ball heads 33 are Z1 and Z2 respectively, the two points of the central axis after the two ends of the balancing shaft 5 are clamped are A and B, and the plane formed by the four points Z1, Z2, A, and B is the Z reference, that is, the horizontal plane. The two positioning ball heads 33 fix the gears of the balancing shaft 5 from the bottom in the vertical direction, restore the horizontal plane of the balancing shaft 5, and ensure the horizontal state of the balancing shaft 5 during measurement; when the eccentric wheel rod 31 is rotated clockwise, the eccentric wheel rod 31 drives the lifting assembly 32 to descend and then drives the two positioning ball heads 33 to descend and move away from the balancing shaft 5.

[0060] As an optional implementation, in an embodiment of the invention, see Figure 2 and Figure 3As shown, the lifting assembly 32 includes: a bottom plate 321, two push rods 322 and a top plate 323. The bottom plate 321 is arranged below the eccentric wheel rod 31, and the two push rods 322 are arranged on the bottom plate 321 at intervals in the vertical direction. The top plate 323 is arranged above the two push rods 322. The rotation of the eccentric wheel rod 31 drives the two push rods 322 and the top plate 323 to rise or fall in the vertical direction. The eccentric wheel rod 31 is connected to the bottom plate 321. When the eccentric wheel rod 31 rotates, it drives the bottom plate 321 to rotate, thereby pushing the two push rods 322 and the top plate 323 to rise or fall in the vertical direction.

[0061] As an optional implementation, in an embodiment of the invention, see Figure 3 As shown, two linear bearings 11 are provided on the base 1, one push rod 322 is correspondingly provided in one of the linear bearings 11 and can rise or fall in the linear bearing 11, the outer sleeve of the linear bearing 11 is fixedly connected to the base 1, one push rod 322 correspondingly passes through one of the linear bearings 11 and slides up and down in the linear bearing 11, when the eccentric wheel rod 31 rotates, it drives the bottom plate 321 to move up and down, and the bottom plate 321 further pushes the two push rods 322 to slide up and down in the linear bearing 11, thereby converting sliding friction into rolling friction, reducing friction resistance and wear, and improving mechanical efficiency.

[0062] As an optional implementation, in an embodiment of the invention, see Figure 2 and Figure 3 As shown, a spring 12 is provided on the base 1, and the spring 12 is located between the two push rods 322 and connected to the top plate 323. When the two push rods 322 drive the top plate 323 and the positioning ball head 33 to rise, the spring 12 is in a stretched state. When the two push rods 322 drive the top plate 323 and the positioning ball head 33 to descend, the spring 12 is in a contracted state. The spring 12 can accurately control the movement time and amplitude of the two push rods 322, and limit the two push rods 322. The spring 12 can also help the two push rods 322 maintain stability and reduce deviations caused by vibration or external interference by providing appropriate elastic force and support.

[0063] As an optional implementation, in an embodiment of the invention, see Figure 5As shown, the measuring assembly 4 includes: a measuring seat 41, a measuring head 42, an elastic block 43 and a dial indicator 44. The measuring seat 41 is arranged on the base 1 and can slide horizontally on the base 1. The measuring head 42 is arranged at the top of the measuring seat 41 and is used to fit with the tooth groove of the balancing shaft 5. The elastic block 43 is arranged in the measuring seat 41 and connected to the measuring head 42. The dial indicator 44 is arranged above the measuring seat 41 and connected to the elastic block 43, and is used to obtain the phase angle of the tooth groove of the balancing shaft 5. The measuring seat 41 slides to drive the measuring head 42 and the dial indicator 44 to approach the balancing shaft 5. When the measuring seat 41 slides, the measuring head 42 and the dial indicator 44 are moved closer to the balancing shaft 5. When the measuring head 42 fits with the tooth grooves of the balancing shaft 5, the elastic block 43 will produce telescopic movement following the changes of the measuring head 42, and the change in the position of the measuring head 42 is fed back to the dial indicator 44 through the telescopic movement of the elastic block 43, and the phase angle value of the tooth grooves of the balancing shaft 5 is read by the dial indicator 44; in addition, before detecting the phase angle of the tooth grooves of the balancing shaft 5, standard parts are first used for zeroing, that is, the measuring head 42, the elastic block 43 and the dial indicator 44 are used to detect the standard parts first, and the dial indicator 44 is adjusted to the zero position, and then the standard balancing shaft 5 is removed and the balancing shaft 5 to be detected is clamped for detection.

[0064] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the engine balance shaft phase angle detection tool also includes: a telescopic rod 6 and a guide rail 7, the telescopic rod 6 is arranged on the base 1 and connected to the measuring seat 41, the guide rail 7 is arranged at the bottom of the measuring seat 41, the telescopic rod 6 drives the measuring seat 41 to slide on the guide rail 7, and a third handle 61 is provided on one side of the telescopic rod 6. The third handle 61 is rotated to push the measuring seat 41 to slide on the guide rail 7, and the sliding of the measuring seat 41 drives the measuring head 42 and the dial indicator 44 to approach or move away from the balance shaft 5.

[0065] An engine balance shaft phase angle detection tool in an embodiment of the present invention has the following working principle: a standard balance shaft 5 is fixed between the left fixing seat 21 and the right fixing seat 22, the first handle 2211 is rotated to drive the sliding rod 221 to slide and approach the left fixing seat 21, so that the sliding rod 221 abuts against and clamps the right end of the standard balance shaft 5, the second handle 311 is rotated to drive the eccentric wheel rod 31 to rotate and then push the two push rods 322 and the top plate 323 to rise in the vertical direction, so that the two positioning ball heads 33 rise and press against the plane of the eccentric block of the gear of the standard balance shaft 5, and then the third handle 61 is rotated to drive the measuring seat 41 to slide on the guide rail 7, so that the measuring head 42 abuts against the standard balance shaft 5. The teeth and grooves of the gear of the balancing shaft 5 are fitted, and the dial indicator 44 is adjusted to the zero position. Then, the first handle 2211 is rotated to drive the sliding rod 221 to slide and move away from the left fixed seat 21, so that the standard balancing shaft 5 is separated from the left fixed seat 21 and the right fixed seat 22. The second handle 311 is rotated to drive the eccentric wheel rod 31 to rotate and then push the two push rods 322 and the top plate 323 to descend in the vertical direction. The third handle 61 is rotated to push the measuring seat 41 to slide on the guide rail 7, so that the measuring head 42 is away from the standard balancing shaft 5. The standard balancing shaft 5 is removed and then the balancing shaft 5 to be tested is clamped for testing. The above measurement steps are repeated, and the phase angle of the balancing shaft 5 to be tested is read through the dial indicator 44.

[0066] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0067] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0068] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. An engine balance shaft phase angle detection tool, characterized in that: include: Base (1); A clamping assembly (2), the clamping assembly (2) being arranged on the base (1) and being used for axially fixing the balancing shaft (5); A support assembly (3), the support assembly (3) being arranged on the base (1) and located below the balancing shaft (5), and being used for abutting against the plane of the gear eccentric block of the balancing shaft (5); A measuring component (4) is arranged on the base (1) and can slide horizontally on the base (1), and is used to fit with the tooth groove of the balancing shaft (5) to measure the phase angle of the tooth groove of the balancing shaft (5).

2. The engine balance shaft phase angle detection tool according to claim 1, characterized in that: The clamping assembly (2) comprises: A left fixed seat (21), wherein the left fixed seat (21) is arranged on one side of the base (1); A right fixing seat (22), the right fixing seat (22) being arranged on the other side of the base (1), and a sliding rod (221) being arranged inside the right fixing seat (22) for cooperating with the left fixing seat (21) to axially fix the balancing shaft (5).

3. The engine balance shaft phase angle detection tool according to claim 2, characterized in that: The clamping assembly (2) further comprises: A support frame (23), the support frame (23) is arranged on the base (1) and is located between the left fixing seat (21) and the right fixing seat (22).

4. The engine balance shaft phase angle detection tool according to claim 2, characterized in that: The clamping assembly (2) further comprises: A gasket (24), the gasket (24) being arranged between the left fixing seat (21) and the base (1) and being used for adjusting the height of the left fixing seat (21).

5. The engine balance shaft phase angle detection tool according to claim 1, characterized in that: The support assembly (3) comprises: An eccentric wheel rod (31), wherein the eccentric wheel rod (31) is arranged at the bottom of the base (1); A lifting assembly (32), wherein the lifting assembly (32) is arranged on the eccentric wheel rod (31), and the eccentric wheel rod (31) rotates to drive the lifting assembly (32) to rise or fall in a vertical direction; Two positioning ball heads (33) are arranged at intervals on the lifting assembly (32), and the lifting assembly (32) drives the two positioning ball heads (33) to rise and abut against the plane of the gear eccentric block of the balance shaft (5).

6. The engine balance shaft phase angle detection tool according to claim 5, characterized in that: The lifting assembly (32) comprises: A bottom plate (321), the bottom plate (321) being arranged below the eccentric wheel rod (31); Two push rods (322), the two push rods (322) are arranged on the bottom plate (321) at intervals in the vertical direction; A top plate (323) is arranged above the two push rods (322), and the eccentric wheel rod (31) rotates to drive the two push rods (322) and the top plate (323) to rise or fall in a vertical direction.

7. The engine balance shaft phase angle detection tool according to claim 6, characterized in that: Two linear bearings (11) are arranged on the base (1), and one push rod (322) is correspondingly arranged in one of the linear bearings (11) and can rise or fall in the linear bearing (11).

8. The engine balance shaft phase angle detection tool according to claim 6, characterized in that: A spring (12) is provided on the base (1), and the spring (12) is located between the two push rods (322) and connected to the top plate (323).

9. The engine balance shaft phase angle detection tool according to claim 1, characterized in that: The measuring component (4) comprises: A measuring seat (41), the measuring seat (41) being arranged on the base (1) and being capable of sliding horizontally on the base (1); A measuring head (42), the measuring head (42) being arranged at the top end of the measuring seat (41) and being used for fitting with the tooth groove of the balancing shaft (5); an elastic block (43), the elastic block (43) being arranged in the measuring seat (41) and connected to the measuring head (42); A dial gauge (44) is arranged above the measuring seat (41) and connected to the elastic block (43), and is used to obtain the phase angle of the tooth groove of the balancing shaft (5).

10. The engine balance shaft phase angle detection tool according to claim 9, characterized in that: Also includes: A telescopic rod (6), the telescopic rod (6) being arranged on the base (1) and connected to the measuring seat (41); A guide rail (7), wherein the guide rail (7) is arranged at the bottom of the measuring seat (41), and the telescopic rod (6) drives the measuring seat (41) to slide on the guide rail (7).

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