A claw type vacuum pump with a locking structure

Abstract

The present invention provides a claw vacuum pump with a locking structure, which relates to the field of claw vacuum pumps. The claw vacuum pump with a locking structure includes a shell and a vacuum pump body. The vacuum pump body includes a motor and a pump body, including a reinforcement beam, two reinforcement beams are provided, and are respectively fixed on the front and rear ends of the inner bottom wall of the shell; it also includes a universal buffer assembly, one end of which is fixedly mounted on the inner side wall of the shell, and the motor is mounted on the end away from the shell; it also includes a detachable damping member, which is arranged between the two reinforcement beams and is installed on the two reinforcement beams; it includes a bottom buffer member, which is located below the detachable damping member and is fixed to the inner bottom wall of the shell. The claw vacuum pump with a locking structure can meet the effects of self-locking, easy on-site maintenance, running with buffering, and easy disassembly and assembly by providing a detachable damping member; by providing a universal buffer assembly, the separate connection can better protect the motor rotor and extend the service life of the motor.

Description

Technical Field

[0001] The invention relates to the field of claw type vacuum pumps, in particular to a claw type vacuum pump with a locking structure. Background Art

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical or physicochemical methods to evacuate the container to obtain a vacuum. Generally speaking, a vacuum pump is a device that uses various methods to improve, generate and maintain a vacuum in a closed space. According to the working principle of the vacuum pump, the vacuum pump can basically be divided into two types, namely, a gas capture pump and a gas transmission pump, which are widely used in metallurgy, chemical industry, food and electronic coating industries. The claw pump is a positive displacement rotary pump, which is mostly used to obtain a dry, low-pollution high vacuum environment and compressed clean gas, and is widely used in modern industry.

[0003] With regard to the shock absorbing devices for the currently used oil-free claw vacuum pumps, the existing shock absorbing devices for the oil-free claw vacuum pumps have poor shock absorbing effects. The vibration generated by the operation of the oil-free claw vacuum pump may cause the oil-free claw vacuum pump to collide with other structures, thus affecting the service life of the oil-free claw vacuum pump. Some shock absorbing devices for the oil-free claw vacuum pumps are not convenient for fixing the oil-free claw vacuum pump, so that the vibration generated by the oil-free claw vacuum pump during operation may cause the oil-free claw vacuum pump to slip, thus causing damage to the oil-free claw vacuum pump. In some existing equipment, in order to ensure the simplicity of the device, the motor and the vacuum pump are installed as a whole. Since the claw vacuum pump is prone to vibration during operation, the vibrating main shaft may cause the main shaft of the motor to vibrate, thereby causing damage to the motor.

[0004] Chinese Patent Publication No.: CN214093595U discloses a claw-type vacuum pump with a locking structure, including a foot cup and a mounting plate, a bottom tube fixedly mounted on the top of the foot cup, a telescopic spring fixedly mounted on the inner bottom wall of the bottom tube, a support column fixedly connected to the top of the telescopic spring, a slide groove provided on the left and right side walls of the bottom tube, a slider slidably connected inside the slide groove, a bottom plate fixedly mounted on the top of the support column, two side plates fixedly mounted on the top of the bottom plate, two limit springs fixedly mounted on opposite sides of the two side plates, a connecting block fixedly mounted on the side of the limit spring away from the side plate, and a fixing sleeve fixedly mounted on the outer side of the connecting block. The claw-type vacuum pump with a locking structure can quickly lock the position of the pump body, and also has a good shock-absorbing effect, making the pump body more stable to use.

[0005] In this solution, although a spring is provided to achieve the effect of up and down shock absorption, the motor and the pump are still installed together, which will cause the motor to shake. The shaking of the motor will affect its own life. Moreover, although this solution is easy to disassemble and maintain, this connection method is not reliable and will cause limit failure when facing high-frequency and long-term vibration.

[0006] Chinese patent publication number: CN213575328U discloses a shock absorbing device for an oil-free claw vacuum pump, including a bottom plate, and a support is fixedly installed on the top of the bottom plate. The shock absorbing device for the oil-free claw vacuum pump, through the vibration generated in the body of the oil-free claw vacuum pump, makes the top plate and the top rod move up and down, drives the movable block and the connecting column to move up and down, the support spring has resistance to the movable block moving up and down, thereby buffering the movable block, the up and down movement of the connecting column drives the slider to slide in the connecting frame, the telescopic spring has resistance to the moving slider, thereby buffering the slider, by setting a bidirectional screw rod, a fixed block, a clamping block, a contact block and a limit groove, the bidirectional screw rod is rotated, the clamping block moves, the contact block clamps and fixes the mounting plate, thereby facilitating the fixing, and after fixing, the movement of the body of the oil-free claw vacuum pump is also prevented, solving the problem of poor shock absorption effect and inconvenient fixing.

[0007] This solution has many shock-absorbing facilities, which causes large shaking during actual use. In addition, a bidirectional screw is used to fix the vacuum pump, which can easily fail after vibration. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides a claw-type vacuum pump with a locking structure, which solves the problems raised in the above background technology.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a claw-type vacuum pump with a locking structure, comprising a housing and a vacuum pump body, the vacuum pump body comprising a motor and a pump body, comprising a reinforcing beam, two reinforcing beams are provided, and are respectively fixed on the front and rear ends of the inner bottom wall of the housing; further comprising a universal buffer assembly, one end of which is fixedly mounted on the inner side wall of the housing, and the motor is mounted on the end thereof away from the housing; further comprising a detachable damping member, which is arranged between the two reinforcing beams and is mounted on the two reinforcing beams; comprising a bottom buffer member, which is located below the detachable damping member and is fixed to the inner bottom wall of the housing, and the upper end of which is used for buffering and supporting the detachable damping member;

[0010] The detachable damping member comprises a first pressure plate, a damping buffer rod A, a gasket, a rubber column and a special-shaped plate. The damping buffer rod A and the special-shaped plate are each provided with two groups, each group having two. The fixed end of any group of damping buffer rods A is hinged to the corresponding reinforcement beam, and the other end is hinged to the special-shaped plate. The other end of the special-shaped plate is hinged to the bottom surface of the first pressure plate. Four gaskets are provided, which are respectively installed at four angular positions on the upper surface of the first pressure plate. The gaskets are fixedly installed with fixed ears A. A shaft sleeve is fixedly installed at the hinge axis of the special-shaped plate and the damping buffer rod A. After the first pressure plate is pressed down, the damping buffer rod A extends to press the special-shaped plate onto the first pressure plate, and the shaft sleeve is coaxial with the fixed ear A at this time. Four rubber columns are provided, and the rubber columns can be inserted into the shaft sleeve after passing through the fixed ear A.

[0011] The pump body is fixedly mounted on the first pressure plate by bolts.

[0012] Preferably, the two groups of damping buffer rods A and the special-shaped plates are symmetrically arranged about the center line of the first pressure plate, the fixed end height of the damping buffer rod A is lower than the height of its movable end, and the end of the rubber column away from the sleeve passes through the fixed ear A and is installed with a pull ring.

[0013] Preferably, the output end of the damping buffer rod A is hinged to the special-shaped disk by a latch pin.

[0014] Preferably, the universal buffer assembly includes a second pressure plate, a longitudinal plate, a large spring, and a damping buffer rod B. The motor is installed on the second pressure plate. There are two longitudinal plates, one of which is fixed to an end of the second pressure plate away from the motor, and the two are perpendicular. The other longitudinal plate is fixed to the inner wall of the outer shell. The large spring is located between the two longitudinal plates, and the two ends of the large spring are respectively fixed to the two longitudinal plates. Four damping buffer rods B are provided, corresponding to the four corners of the two longitudinal plates, and the fixed end and the movable end of the damping buffer rod B are respectively hinged to the two longitudinal plates.

[0015] Preferably, the fixed end and the movable end of the damping buffer rod B are fixedly installed with a fixed ear B, and the longitudinal plate is fixedly installed with two fixed ears C at the corresponding positions thereof, the two fixed ears C are clamped between the fixed ears B, a pin is provided between the two fixed ears C, and a through groove is opened on the fixed ear B and the fixed ear C, the end of the pin is in the through groove of the fixed ear C, a coil spring is fixedly installed in the through groove of the fixed ear C, the end of the pin is fixedly connected to the inner ring of the coil spring, the through groove of the fixed ear B is movably sleeved outside the pin, and its diameter is larger than the diameter of the pin, and there is a displacement interval between the fixed ear B and the adjacent fixed ear C.

[0016] Preferably, the first pressure plate and the second pressure plate are arranged in a horizontal arrangement and are on the same plane when not vibrating. A linkage rubber pad is provided between the two inner bottom wall of the outer shell. The two ends of the linkage rubber pad are respectively located at the bottom of the first pressure plate and the second pressure plate. The bottom end of the linkage rubber pad is hinged to the inner bottom wall of the outer shell.

[0017] Preferably, when the first pressure plate and the second pressure plate are not subjected to force, the two ends of the linkage rubber pad are in close contact with the bottom surfaces of the two plates. The linkage rubber pad is composed of a plurality of rubber gaskets and can be deformed when subjected to force.

[0018] Preferably, the bottom buffer comprises a support plate and a small spring, four small springs are provided and are respectively located at the four corners of the bottom surface of the support plate, the lower end of the small spring is fixed to the support plate, the lower end of the support plate is fixed to the inner bottom wall of the outer shell, and the small spring is located under the first pressure plate and is used to support the first pressure plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The claw type vacuum pump with a locking structure is provided with a detachable damping member. When the pump body is installed, the pump body is connected to the first pressure plate by bolts, and then the first pressure plate is pressed to make the special-shaped plate flip up and fold toward the first pressure plate. After being folded into place, the damping buffer rod A is in an extended state. At this time, the components tend to be balanced, and the shaft sleeve corresponds to the fixed ear A. Then the rubber column is inserted into the fixed ear A to fix the first pressure plate. When the pump body vibrates, its main vibration force will act on the special-shaped plate. Since the special-shaped plate is supported by four damping buffer rods A, the damping buffer rod A will Absorb fluctuations, and then the remaining forces are completely applied to the rubber column. When the rubber column is deformed, the damping buffer rod A will also deform accordingly to achieve buffering. The pump body needs to be lifted during maintenance. At this time, the rubber column is pulled down, the special-shaped disk is flipped outward and then folded inward, and the damping buffer rod A contracts and then returns to the extended state. At this time, the pump body is in a lifted and stable state, which is convenient for maintenance personnel to manually inspect and repair. If replacement is required, only the hinge shaft of the damping buffer rod A and the special-shaped disk needs to be unplugged, which can meet the effects of self-locking, easy on-site maintenance, operation with buffering, and easy disassembly and assembly.

[0021] The claw type vacuum pump with a locking structure is provided with a universal buffer assembly, and the motor and the pump body are separated. When the vibration of the pump body acts on the motor spindle, the motor is firmly fixed, but at the same time, the motor can be subjected to vibration. However, the vibration force borne by the spindle at this time is not rigid. The large spring and the damping buffer rod B can minimize the influence of the vibration on the motor, and the separate connection can better protect the motor rotor and extend the service life of the motor.

[0022] The claw-type vacuum pump with a locking structure is provided with a linkage rubber pad. When the first pressure plate and the second pressure plate are subjected to longitudinal vibration force, the force can be transmitted to the other structure, so that the vibrations between the two can offset each other, further reducing the impact of the vibration. The simultaneous shock waves of the two will also be buffered by the linkage rubber pad.

[0023] The claw-type vacuum pump with a locking structure is used to achieve further buffering by arranging a bottom buffer to prevent the housing itself from shaking.

[0024] The claw-type vacuum pump with a locking structure can play a strong supporting role by arranging a reinforcement beam, transmit the main force to the reinforcement beam, and ensure the structural strength of the support pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 The internal structure diagram of the housing of the present invention;

[0027] Figure 3 It is a partial structural schematic diagram of the present invention;

[0028] Figure 4 It is a structural diagram of the detachable damping member and the universal buffer assembly of the present invention;

[0029] Figure 5 It is a front view of the structure of the detachable damping member and the universal buffer assembly of the present invention;

[0030] Figure 6 It is a structural diagram of the universal buffer assembly of the present invention;

[0031] Figure 7 For the present invention Figure 6 A magnified view of a local area in ;

[0032] Figure 8 It is a connection diagram of the pump body and the detachable damping member of the present invention;

[0033] Fig. 9 It is a partial structural diagram of the detachable damping member of the present invention.

[0034] In the figure: 1. casing; 2. motor; 3. pump body; 4. reinforcement beam; 5. universal buffer assembly; 501. second pressure plate; 502. longitudinal plate; 503. large spring; 504. damping buffer rod B; 505. fixing ear B; 506. fixing ear C; 507. pin; 508. through groove; 509. coil spring; 6. detachable damping member; 601. first pressure plate; 602. damping buffer rod A; 603. gasket; 604. rubber column; 605. special-shaped disk; 606. fixing ear A; 607. bushing; 608. pull ring; 7. bottom buffer member; 701. support plate; 702. small spring; 8. linkage rubber pad. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] like Figure 1-9 As shown, a claw-type vacuum pump with a locking structure includes a shell 1 and a vacuum pump body, the vacuum pump body includes a motor 2 and a pump body 3, including a reinforcing beam 4, two reinforcing beams 4 are provided, and are respectively fixed on the front and rear ends of the inner bottom wall of the shell 1; it also includes a universal buffer assembly 5, one end of which is fixedly mounted on the inner side wall of the shell 1, and the motor 2 is mounted on the end thereof away from the shell 1; it also includes a detachable damping member 6, which is arranged between the two reinforcing beams 4 and installed on the two reinforcing beams 4; it includes a bottom buffer member 7, which is located below the detachable damping member 6 and is fixed to the inner bottom wall of the shell 1, and its upper end is used for buffering and supporting the detachable damping member 6.

[0037] The detachable damping member 6 includes a first pressure plate 601, a damping buffer rod A602, a gasket 603, a rubber column 604 and a special-shaped plate 605. The damping buffer rod A602 and the special-shaped plate 605 are provided with two groups, each group has two, and the fixed end of any group of damping buffer rods A602 is hinged to the corresponding reinforcement beam 4, and the other end is hinged to the special-shaped plate 605. The other end of the special-shaped plate 605 is hinged to the bottom surface of the first pressure plate 601. There are four gaskets 603, which are respectively installed on the first pressure plate 601 and the special-shaped plate 605. 01, the gasket 603 is fixedly installed with a fixing ear A606 at the four corner positions on the upper surface, and the shaft sleeve 607 is fixedly installed at the hinge axis between the special-shaped plate 605 and the damping buffer rod A602. After the first pressure plate 601 is pressed down, the damping buffer rod A602 extends to press the special-shaped plate 605 on the first pressure plate 601, and the shaft sleeve 607 is coaxial with the fixing ear A606 at this time. There are four rubber columns 604, which can penetrate the fixing ear A606 and then be inserted into the shaft sleeve 607.

[0038] The pump body 3 is fixedly mounted on the first pressure plate 601 by means of bolts.

[0039] An operation panel is installed on the shell 1. The reinforcement beam 4 is fixed in the shell 1 by screws and is integrated with the shell 1. The damping buffer rod A602 is a spring damping rod. The special-shaped disk 605 is made of aluminum alloy and is provided with a hollow structure, which can increase the strength while reducing the weight. The sleeve 607 is also installed on the special-shaped disk 605 by bolts and can be removed or replaced. The rubber column 604 is made of hard rubber and will deform after being subjected to greater pressure. It can reduce noise during connection and reduce vibration.

[0040] The two groups of damping buffer rods A602 and the special-shaped plate 605 are symmetrically arranged with respect to the center line of the first pressure plate 601. The fixed end height of the damping buffer rod A602 is lower than the height of its movable end. The end of the rubber column 604 away from the shaft sleeve 607 passes through the fixing ear A606 and is then installed with a pull ring 608.

[0041] An inclined damping buffer rod A602 is provided to facilitate the first pressure plate 601 to change its position up and down for inspecting the pump body 3, so that the first pressure plate 601 has two stable position states.

[0042] The output end of the damping buffer rod A602 is hinged to the special-shaped disk 605 by a latch pin.

[0043] The damping buffer rod A602 can be removed from the special-shaped disk 605 to separate the two. When disassembling, it is only necessary to unplug the pin. The pin is equipped with a limit ring and is not easy to fall off under high-frequency vibration. After disassembly, the pump body 3 can be removed from the special-shaped disk 605 together with the first pressure plate 601, which makes it very convenient for maintenance personnel to perform maintenance.

[0044] The universal buffer assembly 5 includes a second pressure plate 501, a longitudinal plate 502, a large spring 503, and a damping buffer rod B504. The motor 2 is installed on the second pressure plate 501. There are two longitudinal plates 502, one of which is fixed to the end of the second pressure plate 501 away from the motor 2, and the two are perpendicular. The other longitudinal plate 502 is fixed to the inner wall of the outer shell 1. The large spring 503 is located between the two longitudinal plates 502. The two ends of the large spring 503 are respectively fixed to the two longitudinal plates 502. There are four damping buffer rods B504, which correspond to the four corners of the two longitudinal plates 502 respectively. The fixed end and the movable end of the damping buffer rod B504 are respectively hinged to the two longitudinal plates 502.

[0045] The second pressure plate 501 is provided with screw holes for installing the motor 2, and the motor 2 is installed on the second pressure plate 501 with bolts. The spring diameter of the large spring 503 is relatively thick, which can filter high-frequency vibrations, but the deformation is small. The damping buffer rod B504 is a spring damping rod.

[0046] The fixed end and the movable end of the damping buffer rod B504 are fixedly installed with a fixing ear B505, and the corresponding parts of the longitudinal plate 502 are fixedly installed with two fixing ears C506, the two fixing ears C506 are stuck between the fixing ears B505, and a pin 507 is provided between the two fixing ears C506. A through groove 508 is opened on the fixing ear B505 and the fixing ear C506, and the end of the pin 507 is located in the through groove 508 of the fixing ear C506. A coil spring 509 is fixedly installed in the through groove 508 of the fixing ear C506, and the end of the pin 507 is fixedly connected to the inner ring of the coil spring 509. The through groove 508 of the fixing ear B505 is movably sleeved outside the pin 507, and its diameter is larger than the diameter of the pin 507. There is a displacement interval between the fixing ear B505 and the adjacent fixing ear C506.

[0047] When the large spring 503 is deformed, the fixed ear B505 can swing arbitrarily between the two fixed ears C506. During the swing, the damping buffer rod B504 can play a buffering role. At the same time, the pin shaft 507 will also jump in the groove 508 of the fixed ear C506. When jumping, it will be affected by the elastic reaction force and return to the origin. It can filter fluctuations while meeting the support requirements.

[0048] The first pressure plate 601 and the second pressure plate 501 are arranged in a horizontal arrangement and are on the same plane when not vibrating. A linkage rubber pad 8 is provided between the two inner bottom wall of the outer shell 1. The two ends of the linkage rubber pad 8 are respectively located at the bottom of the first pressure plate 601 and the second pressure plate 501. The bottom end of the linkage rubber pad 8 is hinged to the inner bottom wall of the outer shell 1.

[0049] When the first pressure plate 601 is pressed down, it can lift up the second pressure plate 501 through the linkage rubber pad 8. This effect is a subtle change, which can offset some vibration forces when filtering fluctuations.

[0050] When the first pressure plate 601 and the second pressure plate 501 are not subjected to force, the two ends of the linkage rubber pad 8 are in close contact with the bottom surfaces of the two. The linkage rubber pad 8 is composed of a plurality of rubber gaskets and can be deformed after being subjected to force.

[0051] Multiple rubber gaskets are closed and fixed side by side with a metal shell. The first pressure plate 601 and the second pressure plate 501 vibrate downward at the same frequency, which can deform the linked rubber pad 8. When the two are at different frequencies, the linked rubber pad 8 still has a certain supporting force.

[0052] The bottom buffer member 7 includes a support plate 701 and a small spring 702. Four small springs 702 are provided and are respectively located at the four corners of the bottom surface of the support plate 701. The lower end of the small spring 702 is fixed to the support plate 701. The lower end of the support plate 701 is fixed to the inner bottom wall of the outer shell 1. The small spring 702 is located under the first pressure plate 601 and is used to support the first pressure plate 601.

[0053] The support plate 701 and the small spring 702 only play the role of elastic contraction and resetting, and there is no need to install damping.

[0054] When in use, the motor 2 is installed on the second pressure plate 501 by bolts, and the pump body 3 is installed on the first pressure plate 601 by bolts, and then the first pressure plate 601 is pressed to make the special-shaped plate 605 flip up and fold toward the first pressure plate 601. After being flipped into place, the damping buffer rod A602 is in an extended state. At this time, the components tend to be balanced, and the shaft sleeve 607 corresponds to the fixing ear A606. Then the rubber column 604 is inserted into the fixing ear A606 to fix the first pressure plate 601. When the pump body 3 vibrates, When the vibration force is greater than 0.01 mm, the main vibration force will act on the special-shaped plate 605. Since the special-shaped plate 605 is supported by four damping buffer rods A602, the damping buffer rods A602 will absorb the fluctuation, and then the remaining force will act completely on the rubber column 604. When the rubber column 604 is deformed, the damping buffer rods A602 will also deform to achieve buffering. The bottom buffer member 7 can further buffer when the first pressure plate 601 is pressed down to prevent the housing 1 from shaking. The pump body 3 needs to be lifted during maintenance. When the rubber column 604 is pulled down, the special-shaped disk 605 is flipped outward and then folded inward, and the damping buffer rod A602 contracts and then resumes the extended state. At this time, the pump body 3 is in a lifted and stable state, which is convenient for maintenance personnel to manually inspect and repair. If replacement is required, only the hinge shaft of the damping buffer rod A602 and the special-shaped disk 605 needs to be unplugged; the motor 2 and the pump body 3 are separated. When the vibration of the pump body 3 acts on the main shaft of the motor 2, the motor 2 is firmly fixed, but at the same time, the motor 2 can withstand vibration. However, the vibration force borne by the main shaft at this time is not rigid. The large spring 503 and the damping buffer rod B504 can minimize the impact of vibration on the motor 2, and the separate connection can better protect the rotor of the motor 2. When the first pressure plate 601 and the second pressure plate 501 are subjected to the longitudinal vibration force, they can be transmitted to another structure, so that the vibration between the two can offset each other, further reducing the impact of the vibration, and the simultaneous shock waves of the two will also be buffered by the linkage rubber pad 8.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A claw-type vacuum pump with a locking structure, comprising a housing (1) and a vacuum pump body, the vacuum pump body comprising a motor (2) and a pump body (3), characterized in that: It comprises a reinforcing beam (4), two reinforcing beams (4) are provided and are respectively fixed on the front and rear ends of the inner bottom wall of the outer shell (1); it also comprises a universal buffer assembly (5), one end of which is fixedly mounted on the inner side wall of the outer shell (1), and the motor (2) is mounted on the end thereof away from the outer shell (1); it also comprises a detachable damping member (6), which is provided between the two reinforcing beams (4) and is mounted on the two reinforcing beams (4); it also comprises a bottom buffer member (7), which is located below the detachable damping member (6) and is fixed to the inner bottom wall of the outer shell (1), and the upper end of which is used for buffering and supporting the detachable damping member (6); The detachable damping member (6) comprises a first pressure plate (601), a damping buffer rod A (602), a gasket (603), a rubber column (604) and a special-shaped plate (605). The damping buffer rod A (602) and the special-shaped plate (605) are provided in two groups, each group having two members. The fixed end of any group of the damping buffer rod A (602) is hinged to the corresponding reinforcement beam (4), and the other end is hinged to the special-shaped plate (605). The other end of the special-shaped plate (605) is hinged to the bottom surface of the first pressure plate (601). Four gaskets (603) are provided, which are respectively installed on the first pressure plate (601) and the second gaskets (603) are provided on the first pressure plate (601). 01) At four corner positions of the upper surface, a fixing ear A (606) is fixedly installed on the gasket (603), and a shaft sleeve (607) is fixedly installed at the hinge axis between the special-shaped plate (605) and the damping buffer rod A (602). After the first pressure plate (601) is pressed down, the damping buffer rod A (602) extends to make the special-shaped plate (605) press on the first pressure plate (601), and the shaft sleeve (607) is coaxial with the fixing ear A (606) at this time. Four rubber columns (604) are provided, and the rubber columns (604) can penetrate the fixing ear A (606) and then be inserted into the shaft sleeve (607); The pump body (3) is fixedly mounted on the first pressure plate (601) by means of bolts; The two groups of damping buffer rods A (602) and the special-shaped disc (605) are symmetrically arranged about the center line of the first pressure plate (601); the height of the fixed end of the damping buffer rod A (602) is lower than the height of the movable end thereof; the end of the rubber column (604) away from the shaft sleeve (607) passes through the fixing ear A (606) and is then installed with a pull ring (608); The output end of the damping buffer rod A (602) is hinged to the special-shaped disk (605) by a latch pin; The universal buffer assembly (5) comprises a second pressure plate (501), a longitudinal plate (502), a large spring (503), and a damping buffer rod B (504). The motor (2) is mounted on the second pressure plate (501). There are two longitudinal plates (502), one of which is fixed to an end of the second pressure plate (501) away from the motor (2), and the two are perpendicular to each other. The other longitudinal plate (502) is fixed to the inner wall of the housing (1). The large spring (503) is located between the two longitudinal plates (502). Both ends of the large spring (503) are respectively fixed to the two longitudinal plates (502). Four damping buffer rods B (504) are provided, corresponding to the four corners of the two longitudinal plates (502). The fixed end and the movable end of the damping buffer rod B (504) are respectively hinged to the two longitudinal plates (502). The fixed end and the movable end of the damping buffer rod B (504) are both fixedly installed with a fixing ear B (505), and the longitudinal plate (502) is fixedly installed with two fixing ears C (506) at the corresponding positions thereof. The two fixing ears C (506) are clamped between the fixing ears B (505), and a pin shaft (507) is arranged between the two fixing ears C (506). The fixing ears B (505) and the fixing ears C (506) are both provided with a through groove (508), and the end of the pin shaft (507) is provided with a through groove (508). A coil spring (509) is fixedly installed in the through groove (508) of the fixing ear C (506), and the end of the pin shaft (507) is fixedly connected to the inner ring of the coil spring (509). The through groove (508) of the fixing ear B (505) is movably sleeved outside the pin shaft (507), and its diameter is larger than the diameter of the pin shaft (507). A displacement interval exists between the fixing ear B (505) and the adjacent fixing ear C (506).

2. A claw type vacuum pump with a locking structure according to claim 1, characterized in that: The first pressure plate (601) and the second pressure plate (501) are arranged in a horizontal arrangement and are located on the same plane when not vibrating. A linkage rubber pad (8) is provided between the inner bottom wall of the outer shell (1). The two ends of the linkage rubber pad (8) are located at the bottom of the first pressure plate (601) and the second pressure plate (501), respectively. The bottom end of the linkage rubber pad (8) is hinged to the inner bottom wall of the outer shell (1).

3. A claw type vacuum pump with a locking structure according to claim 2, characterized in that: When the first pressure plate (601) and the second pressure plate (501) are not subjected to force, the two ends of the linkage rubber pad (8) are tightly attached to the bottom surfaces of the two. The linkage rubber pad (8) is composed of a plurality of rubber gaskets and can be deformed when subjected to force.

4. A claw type vacuum pump with a locking structure according to claim 3, characterized in that: The bottom buffer (7) comprises a support plate (701) and a small spring (702). Four small springs (702) are provided and are respectively located at four corners of the bottom surface of the support plate (701). The lower end of the small spring (702) is fixed to the support plate (701). The lower end of the support plate (701) is fixed to the inner bottom wall of the housing (1). The small spring (702) is located below the first pressure plate (601) and is used to support the first pressure plate (601).

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