Crank static balance measuring device

Abstract

The invention provides a crank static balance measuring device, and relates to the technical field of crank measurement, the crank static balance measuring device comprises a bottom plate, the two sides of the upper surface of the bottom plate are provided with supporting assemblies used for supporting a crank body, the crank body is placed above the supporting assemblies, one side of the crank body is provided with a measuring assembly used for detecting the balance of the crank body, and the measuring assembly is used for measuring the balance of the crank body. A plurality of weights for assisting measurement are placed on one side of the upper surface of the bottom plate; according to the crank body static balance measurement device and method, the weights of different specifications are arranged, and when balance measurement is carried out and the crank body loses balance, the different weights are placed on the light balance supporting rod, so that corresponding balance parameters can be obtained, and static balance of the crank body is measured; therefore, the balance detection device is researched and developed, and the economic cost of purchasing a special weight detection instrument is saved.

Description

Technical Field

[0001] The invention relates to the technical field of crank measurement, and in particular to a crank static balance measuring device. Background Art

[0002] The crankshaft is the most important part of the engine. It bears the force from the connecting rod and converts it into torque to output through the crankshaft and drive other accessories on the engine. The crankshaft is subjected to the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, which makes the crankshaft bear bending and torsion loads. For the crankshaft of a vehicle engine, its crankshaft is a very important part. In particular, static balance and dynamic balance detection are important standards for the rotation of the crankshaft under rotation and centrifugal force. For this purpose, this application designs a crank static balance measurement device that can measure the static balance of the crank. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a crank static balance measuring device. Compared with the existing special weight detection instruments, the present invention realizes the static balance measurement of the crank at a lower economic cost.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A crank static balance measuring device comprises a base plate, wherein support components for supporting a crank body are arranged on both sides of the upper surface of the base plate, the crank body is placed above the support components, a measuring component for detecting the balance of the crank body is arranged on one side of the crank body, and a plurality of weights for auxiliary measurement are placed on one side of the upper surface of the base plate.

[0006] Preferably, the supporting assembly includes a fixed working plate and a movable working plate. The fixed working plate is fixedly mounted on one side of the upper surface of the base plate. A connecting groove is provided on the other side of the upper surface of the base plate. The movable working plate is movably connected to the connecting groove. The two ends of the crank body are respectively placed on the upper ends of the fixed working plate and the movable working plate.

[0007] Preferably, a movable base is slidably installed inside the connecting slide groove, an expansion slot is penetrated through the body of the movable work plate, a connecting bolt is installed inside the expansion slot, and the connecting bolt is threadedly connected to the movable base.

[0008] Preferably, the measuring assembly includes a combined shell, a combined through hole is provided inside the combined shell, the combined shell is sleeved on one end of the crank body through the combined through hole, an upper opening is provided on the upper side of the combined shell, and a balancing instrument for measuring balance is installed inside the upper opening.

[0009] Preferably, an arc-shaped filling block is provided inside the combined through hole, and the arc-shaped filling block is located between the inner wall of the combined through hole and the crank body.

[0010] Preferably, a support plug is provided at the opening of the arc-shaped filling block, and the support plug is located between the arc-shaped filling block and the crank body.

[0011] Preferably, balancing rods for auxiliary measurement are fixedly mounted on both ends of the combined housing.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In the present application, by equipping with several weights of different specifications, when the crank body loses balance during balance measurement, the corresponding balance parameters can be obtained by placing different weights on the lighter balance support rod, thereby realizing the measurement of the static balance of the crank body. The present application develops a balance detection device based on the principle of static balance, saving the economic cost of purchasing special weight detection instruments.

[0014] 2. Before measuring, since the lengths of the crank bodies are different, in order to adapt to the support measurement of crank bodies of different lengths, the connecting bolts are rotated to increase the distance between the mobile base and the base, so that the mobile base will be away from the base plate, so that the mobile base can move freely, thereby adjusting the distance between the mobile base and the fixed work plate to achieve support for crank bodies of different lengths. After adjustment, the connecting bolts are reversed again to make them threadedly connected to the mobile base, and the mobile base is moved down to fit the surface of the base plate. The above structure can prevent the mobile base from moving after adjustment to affect the balance measurement.

[0015] 3. During the measurement process, the balancer needs to be connected to the crank body, and then the crank body is placed on the upper end of the fixed work plate and the movable work plate. Then, the crank body is tilted in the corresponding direction according to the balance of the crank body. The balancer is located in the center of the crank body, so that the corresponding changes can be made quickly according to the balance state, so that the bubble of the balancer moves, and finally the weights are placed to determine the error range.

[0016] 4. In order to quickly connect the crank body, the crank body is inserted into the combined through hole, and then the arc filling block is inserted to fill the gap between the crank body and the combined through hole. In order to improve the fixing stability, the support plug is then inserted into the opening of the arc filling block to provide additional support for the arc filling block to prevent the arc filling block from moving. The above method makes the installation method faster and does not require other cumbersome fixing methods. After the measurement is completed, you only need to pull out the crank body to complete the quick disassembly, which effectively improves the efficiency of continuous measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 yes Figure 1 The enlarged structural diagram at a in the middle;

[0019] Figure 3 It is a side structural schematic diagram of the present invention;

[0020] Figure 4 It is a front view structural schematic diagram of the present invention;

[0021] Figure 5 It is a schematic diagram of the top structure of the present invention.

[0022] In the figure: 1. bottom plate; 2. support assembly; 201. fixed working plate; 202. movable working plate; 203. connecting slide groove; 204. expansion slot; 205. connecting bolt; 206. movable base; 3. crank body; 4. measuring assembly; 401. combined shell; 402. combined through hole; 403. arc filling block; 404. support plug block; 405. upper opening; 406. balance instrument; 407. balance support rod; 5. weights. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 making creative work are within the scope of protection of the present invention.

[0024] like Figures 1 to 5 As shown, a crank static balance measuring device includes a base plate 1, support components 2 for supporting a crank body 3 are arranged on both sides of the upper surface of the base plate 1, the crank body 3 is placed above the support components 2, a measuring component 4 for detecting the balance of the crank body 3 is arranged on one side of the crank body 3, and a plurality of weights 5 for auxiliary measurement are placed on one side of the upper surface of the base plate 1.

[0025] In the present application, by equipping with several weights 5 of different specifications, when the crank body 3 loses balance during balance measurement, the corresponding balance parameters can be obtained by placing different weights 5 on the lighter balance support rod 407, thereby realizing the measurement of the static balance of the crank body 3.

[0026] In this embodiment, the support assembly 2 includes a fixed work plate 201 and a movable work plate 202. The fixed work plate 201 is fixedly installed on one side of the upper surface of the base plate 1. A connecting groove 203 is opened on the other side of the upper surface of the base plate 1. The movable work plate 202 is movably connected to the connecting groove 203. The two ends of the crank body 3 are respectively placed on the upper ends of the fixed work plate 201 and the movable work plate 202.

[0027] It should be noted that a movable base 206 is slidably installed inside the connecting slide groove 203, an expansion slot 204 is opened through the body of the movable working plate 202, a connecting bolt 205 is installed inside the expansion slot 204, and the connecting bolt 205 is threadedly connected to the movable base 206.

[0028] Before measurement, since the lengths of the crank bodies 3 are different, in order to adapt to the different lengths of the crank bodies 3 for support measurement, the connecting bolts 205 are rotated to increase the distance between the connecting bolts 205 and the movable base 206 so that the movable base 206 will be away from the base plate 1, so that the movable base 206 can move freely, thereby adjusting the distance between the movable base 206 and the fixed work plate 201 to achieve support for crank bodies 3 of different lengths. After adjustment, the connecting bolts 205 are reversed again to be threadedly connected to the movable base 206, and the movable base 206 is moved down to fit the surface of the base plate 1. The above structure can prevent the movable base 206 from moving after adjustment to affect the balance measurement.

[0029] In this embodiment, the measuring component 4 includes a combined shell 401, a combined through hole 402 is opened inside the combined shell 401, the combined shell 401 is sleeved on one end of the crank body 3 through the combined through hole 402, an upper opening 405 is opened on the upper side of the combined shell 401, and a balancing instrument 406 for measuring balance is installed inside the upper opening 405.

[0030] Wherein, balancing rods 407 for auxiliary measurement are fixedly installed at both ends of the combined housing 401 .

[0031] During the measurement process, the balancer 406 needs to be connected to the crank body 3, and then the crank body 3 is placed on the upper ends of the fixed work plate 201 and the movable work plate 202. After that, the crank body 3 is tilted in the corresponding direction according to the balance state. The balancer 406 is located at the center of the crank body 3, so that corresponding changes can be made quickly according to the balance state, so that the bubble of the balancer 406 moves, and finally the weight 5 is placed to determine the error range.

[0032] In a specific configuration, an arc-shaped filling block 403 is disposed inside the combined through hole 402 , and the arc-shaped filling block 403 is located between the inner wall of the combined through hole 402 and the crank body 3 .

[0033] In the present application, a support plug 404 is provided at the opening of the arc filling block 403, and the support plug 404 is located between the arc filling block 403 and the crank body 3. In order to realize the quick connection of the crank body 3, the crank body 3 is inserted into the combination through hole 402, and then the arc filling block 403 is inserted to fill the gap between the crank body 3 and the combination through hole 402. In order to improve the fixing stability, the support plug 404 is then inserted into the opening of the arc filling block 403 to provide additional support for the arc filling block 403 to prevent the arc filling block 403 from moving. The above method makes the installation method faster and does not require other cumbersome fixing methods. After the measurement is completed, the crank body 3 can be quickly disassembled by simply pulling out, which effectively improves the efficiency of continuous measurement.

[0034] The working principle of this crank static balance measuring device:

[0035] When in use, first place the assembled crank body 3 on the upper end of the fixed work plate 201 and the movable work plate 202. The combined housing 401 is installed on the crank body 3 by inserting the arc-shaped filling block 403 and the support plug block 404, and then the bubble in the balancer 406 on it is observed and its position therein is observed. During the inspection, the bubble should be slightly tilted to the side, and then the weight 5 is hung on the light end, and the bubble is balanced after the weight 5 is hung. Observe the weight of the weight 5, and if it is within the error range, the crankshaft is qualified.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A crank static balance measuring device, comprising a base plate (1), characterized in that: Support components (2) for supporting a crank body (3) are arranged on both sides of the upper surface of the base plate (1); the crank body (3) is placed above the support components (2); a measuring component (4) for detecting the balance of the crank body (3) is arranged on one side of the crank body (3); and a plurality of weights (5) for auxiliary measurement are placed on one side of the upper surface of the base plate (1).

2. A crank static balance measuring device according to claim 1, characterized in that: The support assembly (2) comprises a fixed work plate (201) and a movable work plate (202); the fixed work plate (201) is fixedly mounted on one side of the upper surface of the base plate (1); a connecting slide groove (203) is provided on the other side of the upper surface of the base plate (1); the movable work plate (202) is movably connected to the connecting slide groove (203); and the two ends of the crank body (3) are respectively placed on the upper ends of the fixed work plate (201) and the movable work plate (202).

3. A crank static balance measuring device according to claim 2, characterized in that: A movable base (206) is slidably installed inside the connecting slide groove (203); an expansion slot (204) is provided through the body of the movable working plate (202); a connecting bolt (205) is installed inside the expansion slot (204); and the connecting bolt (205) is threadedly connected to the movable base (206).

4. A crank static balance measuring device according to claim 1, characterized in that: The measuring assembly (4) comprises a combined outer shell (401), a combined through hole (402) is provided inside the combined outer shell (401), the combined outer shell (401) is sleeved on one end of the crank body (3) through the combined through hole (402), an upper opening (405) is provided on the upper side of the combined outer shell (401), and a balancing instrument (406) for measuring balance is installed inside the upper opening (405).

5. A crank static balance measuring device according to claim 4, characterized in that: An arc-shaped filling block (403) is arranged inside the combined through hole (402), and the arc-shaped filling block (403) is located between the inner wall of the combined through hole (402) and the crank body (3).

6. A crank static balance measuring device according to claim 5, characterized in that: A support plug (404) is provided at the opening of the arc-shaped filling block (403), and the support plug (404) is located between the arc-shaped filling block (403) and the crank body (3).

7. A crank static balance measuring device according to claim 4, characterized in that: Balance support rods (407) for auxiliary measurement are respectively fixedly mounted on both ends of the combined housing (401).

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