An automatic oil replenishing device for recyclable use of an electric motor

Abstract

The present invention discloses a motor recyclable automatic oil replenishing device, including an automatic oil replenishing unit, which includes an oil replenishing cylinder body, an adjustment knob arranged on the oil replenishing cylinder body, an oil injection port arranged on the oil replenishing cylinder body, and an oil outlet arranged on the oil replenishing cylinder body; a locking unit, which includes a holding assembly arranged on the oil replenishing cylinder body, a telescopic assembly arranged on the oil replenishing cylinder body, and a locking assembly arranged on the telescopic assembly. When adjusting the knob, the locking unit can lock and press to cancel the restriction on the knob. After the adjustment is completed, the knob is re-fixed by the locking unit, thereby avoiding accidental touching of the knob. And after the knob adjustment is completed, its sealing unit automatically seals the oil injection port, and the sealing effect is good, so that the external environment will not affect the inside through the oil injection port.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic oil replenishment for motors, and particularly to an automatic oil replenishment device for motors that can be recycled. Background Art

[0002] During the operation of the motor bearing, the loss of bearing grease is inevitable. In daily work, manual regular inspections are often carried out to replenish oil for the electrical bearing. However, the oil replenishment of the motor is a dynamic process, and oil replenishment can only be carried out in the state of oil shortage. Moreover, there are many human influencing factors, and the bearing operating in the oil shortage state may cause irreversible damage. Especially for large motors, such bearings are expensive, the motor has a long operating cycle and is difficult to stop and adjust. Once damage is caused, the loss is even difficult to measure. Therefore, an automatic oil replenisher is now used for automatic oil replenishment, so that manual oil replenishment is no longer required.

[0003] The existing automatic oil replenishment device for motors that can be recycled has no locking structure after the knob adjustment is completed. If accidentally touched, the adjusted knob is likely to be misaligned, affecting the use of the automatic oil replenishment device. Moreover, after the oil injection port is used, it needs to be blocked separately with a plug, which is rather troublesome. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the problems of the existing automatic oil replenishment device for motors that can be recycled, such as no locking structure after the knob adjustment is completed and the sealing of the oil injection port, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide an automatic oil replenishment device for motors that can be recycled.

[0007] To solve the above technical problems, the present invention provides the following technical solution: an automatic oil replenishment device for motors that can be recycled, including an automatic oil replenishment unit, which includes an oil replenishment cylinder body, an adjustment knob provided on the oil replenishment cylinder body, an oil injection port provided on the oil replenishment cylinder body, and an oil outlet provided on the oil replenishment cylinder body; a locking unit, which includes a holding component provided on the oil replenishment cylinder body, a telescopic component provided on the oil replenishment cylinder body, and a locking component provided on the telescopic component.

[0008] As a preferred solution of the automatic oil replenishment device for motors that can be recycled according to the present invention, wherein: the holding component includes an arc-shaped plate provided on the oil replenishment cylinder body, a through groove provided on the arc-shaped plate, and a pressing plate provided on the arc-shaped plate.

[0009] As a preferred embodiment of the automatic oil replenishing device for the recyclable motor of the present invention, the telescopic assembly includes a bottom block provided on the oil replenishing cylinder, a tension spring provided on the bottom block, a moving block provided on the tension spring, and a pressing member provided on the bottom block.

[0010] As a preferred embodiment of the automatic oil replenishing device for the recyclable motor of the present invention, the pressing member includes a vertical inclined block provided at the bottom of the moving block, and a pressing rod provided on the pressing plate and extending to the bottom side of the vertical inclined block.

[0011] As a preferred embodiment of the automatic oil replenishing device for the recyclable motor of the present invention, the locking assembly includes a top plate provided on the moving block, an embedding block provided on the top plate, and an embedding hole provided on the knob.

[0012] As a preferred embodiment of the automatic oil replenishing device for the recyclable motor of the present invention, it further includes a sealing unit, which includes a mating assembly provided on the top plate, a plugging assembly provided on the mating assembly, and a sealing assembly provided on the bottom block.

[0013] As a preferred embodiment of the automatic oil replenishing device for the recyclable motor of the present invention, the mating assembly includes a cross plate provided on the top plate, a compression spring provided on the cross plate, a slider provided on the compression spring, and a connecting rope provided on the slider and connected to the bottom block.

[0014] As a preferred embodiment of the automatic oil replenishing device for the recyclable motor of the present invention, the plugging assembly includes an inclined plate provided on the slider, and a plug provided on the inclined plate.

[0015] As a preferred embodiment of the automatic oil replenishing device for the recyclable motor of the present invention, the sealing assembly includes a piston member provided on the bottom block, a sealing member provided on the plug, and a triggering member provided in the piston member.

[0016] As a preferred embodiment of the automatic oil replenishing device for the recyclable motor of the present invention, the piston member includes a cavity provided on the bottom block, a piston block provided on the cavity, and a connecting rod provided on the piston block.

[0017] Advantages of the present invention: When adjusting the knob, the locking unit can lock the knob and can cancel the restriction by pressing. After the adjustment is completed, the knob is fixed again through the locking unit, thereby avoiding accidental activation of the knob. Moreover, after the knob adjustment is completed, its sealing unit automatically seals the oil filling port with good sealing effect, so that the external environment will not affect the interior through the oil filling port. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the automatic oil replenishing device with recyclable motor of the present invention.

[0020] Figure 2 It is a partially enlarged structural schematic diagram of the telescopic component of the automatic oil replenishing device with recyclable motor of the present invention.

[0021] Figure 3 It is a schematic diagram of the internal structure of the telescopic component of the automatic oil replenishing device with recyclable motor of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the extrusion part of the automatic oil replenishing device with recyclable motor of the present invention.

[0023] Figure 5 For Figure 1 the enlarged schematic diagram of structure A in

[0024] Figure 6 It is a schematic diagram of the structure of the piston part of the automatic oil replenishing device with recyclable motor of the present invention.

[0025] Figure 7 It is a schematic diagram of the structure of the trigger part of the automatic oil replenishing device with recyclable motor of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure of the seesaw of the automatic oil replenishing device with recyclable motor of the present invention.

[0027] Figure 9 It is a schematic diagram of the structure of the through column of the automatic oil replenishing device with recyclable motor of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with the drawings of the specification.

[0029] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0030] Secondly, as used herein, an "embodiment" or "embodiments" refers to specific features, structures, or characteristics that may be included in at least one implementation manner of the present invention. The phrase "in an embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0031] Thirdly, the present invention is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views showing the device structure are enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0032] Embodiment 1

[0033] Referring to Figures 1-4 , a recyclable automatic oil replenishing device for a motor, comprising an automatic oil replenishing unit 100 and a locking unit 200. The automatic oil replenishing unit 100 is used to automatically extrude lubricating oil to complete the oil replenishment of the motor, and the locking unit 200 is used to lock the knob to prevent deviation.

[0034] Specifically, the automatic oil replenishing unit 100 includes an oil replenishing cylinder 101. An automatic oil replenishing component is arranged inside the oil replenishing cylinder 101. An adjusting knob 102 is arranged on the oil replenishing cylinder 101. The knob is used to adjust the oil outlet speed of the oil replenishing cylinder 101 to set the gear. An oil injection port 103 is arranged on the oil replenishing cylinder 101. The oil injection port 103 is installed at the top of the oil replenishing cylinder 101 and is used to inject lubricating oil. An oil outlet 104 is arranged on the oil replenishing cylinder 101. The oil outlet 104 is installed at the bottom of the oil replenishing cylinder 101 and is used to connect to the lubricating oil inlet of the motor. The automatic oil replenishing unit 100 is a mechanical automatic oil injector. After the lubricating oil is injected through the injection port, it is stored in the oil replenishing cylinder 101. By adjusting the corresponding gear with the knob, the oil replenishing cylinder 101 discharges the lubricating oil from the oil outlet 104 within a specified time to achieve the effect of automatic oil replenishment.

[0035] Furthermore, the locking unit 200 includes a holding assembly 201 disposed on the oil replenishing column 101. When the knob 102 is adjusted, the hand can be naturally bent to hold the holding assembly 201, and the knob can be rotated through the holding assembly 201. A telescopic assembly 202 is disposed on the oil replenishing column 101, and the telescopic assembly 202 is installed on the top of the oil replenishing column 101. The telescopic assembly 202 is in a retracted state in a natural state. A locking assembly 203 is disposed on the telescopic assembly 202. The locking assembly 203 locks the knob when the telescopic assembly 202 is in a retracted state. When in use, when the holding assembly 201 is pressed, the telescopic assembly 202 is in an extended state. At this time, the locking of the knob by the locking assembly 203 can be canceled, and the knob can be adjusted at this time.

[0036] Furthermore, the holding assembly 201 includes an arc plate 201a arranged on the oil replenishing cylinder 101, the arc plate 201a is installed on the top of the oil replenishing cylinder 101 for hand holding, a through groove 201b is arranged on the arc plate 201a, the through groove 201b is used to extend the finger to one side of the knob, so that the hand holding the arc plate 201a can better control the strength of adjusting the knob 102, and a pressing plate 201c is arranged on the arc plate 201a, and the outer wall of the arc plate 201a is installed with a pressing plate 201c, and pressing the pressing plate 201c is used to extend the telescopic assembly 202.

[0037] Further, the telescopic assembly 202 includes a bottom block 202a disposed on the oil replenishing cylinder 101, the top of the oil replenishing cylinder 101 is equipped with the bottom block 202a, the bottom block 202a is used to accommodate components, a tension spring 202b is disposed on the bottom block 202a, the inner bottom wall of the bottom block 202a is equipped with a tension spring 202b, the tension spring 202b is disposed on a moving block 202c on the tension spring 202b, and the outer wall of the moving block 202c is matched with the inner wall of the bottom block 202a, so that the moving block 202c is 02c can slide in the bottom block 202a, and an extrusion piece 202d is arranged on the bottom block 202a. The extrusion piece 202d is used to work in conjunction with the pressing plate 201c. The tension spring 202b pulls the moving block 202c downward, so that the moving block 202c can be retracted in the bottom block 202a. When the pressing plate 201c is touched, the pressing plate 201c drives the extrusion piece 202d to move, and the movement of the extrusion piece 202d drives the moving block 202c to move, so that the moving block 202c can be extended on the bottom block 202a.

[0038] Further, the pressing member 202d includes a vertical inclined block 202d-1 provided at the bottom of the moving block 202c. The vertical inclined block 202d-1 is used to be pressed and move. A pressing rod 202d-2 is provided on the pressing plate 201c and extends to the bottom side of the vertical inclined block 202d-1. The pressing rod 202d-2 is mounted on the outer wall of the pressing plate 201c. When the pressing plate 201c touches and moves, it drives the pressing rod 202d-2 to move. The pressing rod 202d-2 moves and touches the vertical inclined block 202d-1. The vertical inclined block 202d-1 is pressed and moves upward. The movement of the vertical inclined block 202d-1 drives the moving block 202c to move, so that the moving block 202c moves upward.

[0039] Further, the locking assembly 203 includes a top plate 203a provided on the moving block 202c. The top plate 203a is mounted on the top of the moving block 202c. An embedding block 203b is provided on the top plate 203a. The embedding block 203b is mounted on the bottom of the top plate 203a. An embedding hole 203c is provided on the knob. The embedding holes 203c are evenly opened on the outer wall of the knob. There is a corresponding embedding hole 203c at each adjustment position, so that at each position, the embedding block 203b and the embedding hole 203c can cooperate.

[0040] Operation process: Hold the hand on the arc plate 201a. The through groove 201b is used to extend the finger to one side of the knob, so that the hand holding the arc plate 201a can better control the force of adjusting the knob 102. When pressing the pressing plate 201c, the pressing plate 201c touches and moves to drive the pressing rod 202d-2 to move. The pressing rod 202d-2 moves and touches the vertical inclined block 202d-1. The vertical inclined block 202d-1 is pressed and moves upward. The movement of the vertical inclined block 202d-1 drives the moving block 202c to move, so that the moving block 202c moves upward. The upward movement of the moving block 202c causes the embedding block 203b of the top plate 203a to disengage from the embedding hole 203c, so that the locking of the knob is cancelled. After the adjustment is completed, release the pressing plate 201c, and the tension spring 202b can pull the moving block 202c downward, so that the embedding block 203b is re-embedded into the embedding hole 203c to complete the locking.

[0041] Embodiment 2

[0042] Refer to Figure 2 and Figure 5, what is different from the first embodiment in this embodiment is that it further includes a sealing unit 300, which includes a mating component 301 arranged on the top plate 203a. The mating component 301 is used to adapt the blocking component 302 to the locking unit 200, so that when locked, the blocking component 302 is located on the top side of the oil injection port 103 and is embedded in the oil injection port 103. When the knob is not locked, when the blocking component 302 is displaced to one side of the oil injection port 103, it does not affect the oil injection operation. The blocking component 302 arranged on the mating component 301, and the sealing component 303 arranged on the bottom block 202a. The sealing component 303 improves the sealing performance of the oil injection port 103.

[0043] Specifically, the mating component 301 includes a cross plate 301a arranged on the top plate 203a. The cross plate 301a is installed on the top of the top plate 203a and serves as a support. A compression spring 301b is arranged on the cross plate 301a. The compression spring 301b is installed on the outer wall of the cross plate 301a and is used to spring the slider 301c to one side of the oil injection port 103. The slider 301c is arranged on the compression spring 301b. The slider 301c has a certain sliding stroke on the top plate 203a. A connecting rope 301d is arranged on the slider 301c and is connected to the bottom block 202a. The connecting rope 301d is used to limit the movement of the slider 301c. When the moving block 202c gradually contracts into the bottom block 202a, the connecting rope 301d that was originally tightened by the slider 301c and the bottom block 202a gradually loosens, so that the compression spring 301b can spring the slider 301c to slide to one side of the oil injection port 103 until it slides to the stroke limit. At this time, the slider 301c is on one side of the oil injection port 103, and at this time, the moving block 202c still has a certain contraction stroke.

[0044] The blocking component 302 includes an inclined plate 302a arranged on the slider 301c. The inclined plate 302a enables the plug 302b to be installed on the top side of the oil injection port 103. The plug 302b is arranged on the inclined plate 302a and is used to be embedded in the oil injection port 103. When the moving block 202c continues to contract into the bottom block 202a, the plug 302b on its inclined plate 302a gradually embeds into the oil injection port 103, thus completing the blocking of the oil injection port 103 and no longer requiring manual blocking.

[0045] The rest of the structure is the same as that of Embodiment 1.

[0046] Operation process: The compression spring is used to spring the slider to the side of the oil filling port. The slider has a certain sliding stroke on the top plate. The connecting rope is used to limit the movement of the slider. When the moving block gradually contracts into the bottom block, the connecting rope that was originally tightened by the slider and the bottom block gradually loosens. As a result, the compression spring can spring the slider to slide towards the oil filling port until it slides to the stroke limit. At this time, the slider is on the side of the oil filling port. And at this time, the moving block still has a certain contraction stroke. When the moving block continues to contract, the top plate drives the inclined plate to move, and the inclined plate drives the plug to move. Its vertical downward movement causes the plug to gradually embed into the oil filling port, thereby completing the blockage of the oil filling port and no longer requiring manual blockage.

[0047] Embodiment 3

[0048] Refer to Figures 6-9 , what is different about this embodiment from the above embodiments is that the sealing assembly 303 includes a piston member 303a provided on the bottom block 202a. The piston member 303a is used to push the gas to flow. A sealing member 303b provided on the plug 302b. The sealing member 303b is used to seal the oil filling port 103. A trigger member 303c provided in the piston member 303a. When the trigger member 303c causes the plug 302b to completely embed into the oil filling port 103, gas is filled into the sealing member 303b, so that the sealing member 303b completes the sealing of the oil filling port 103.

[0049] Specifically, the piston member 303a includes a cavity 303a-1 provided on the bottom block 202a. A set of cavities 303a-1 are installed on the outer wall of the bottom block 202a. The cavity 303a-1 is used to accommodate the piston block 303a-2. The piston block 303a-2 provided on the cavity 303a-1. The piston block 303a-2 is a sealing block. A connecting rod 303a-3 provided on the piston block 303a-2. The connecting rod 303a-3 is connected to the bottom of the top plate 203a. When the top plate 203a moves downward, its piston block 303a-2 moves downward, causing the gas to be squeezed on the bottom side of the piston block 303a-2.

[0050] Furthermore, the sealing member 303b includes an airbag 303b-1 installed on the outer wall of the plug 302b. The airbag 303b-1 is annular. An air pipe 303b-2 is installed on the outer wall of the airbag 303b-1, and the air pipe 303b-2 extends into the bottom end of the cavity 303a-1. Gas can enter the airbag 303b-1 through the air pipe 303b-2, thereby completing the sealing of the oil filling port 103.

[0051] Further, the trigger 303c includes a chassis 303c-1 installed on the inner wall of the cavity 303a-1, a through-column 303c-2 installed in the chassis 303c-1, a piston rod 303c-3 installed on the inner wall of the through-column 303c-2, a seesaw 303c-4 installed on the inner bottom wall of the cavity 303a-1, and one end of the seesaw 303c-4 is located at the bottom side of the through-column 303c-2. A cover plate 303c-5 is installed on the top of the chassis 303c-1. The chassis 303c-1 and the cover plate 303c-5 seal the bottom of the cavity 303a-1, so that the gas squeezed by the piston block 303a-2 cannot flow to the airbag 303b-1 end. A push rod 303c-6 is installed on the bottom of the cover plate 303c-5. When the piston block 303a-2 moves downward, the push rod 303c-6 gradually embeds into the through-column 303c-2, and the push rod 303c-6 is located at the top of the other end of the seesaw 303c-4. A small spring 303c-7 is installed on the bottom of the seesaw 303c-4, and the small spring 303c-7 is used to restore the seesaw 303c-4 to a horizontal state. A plug rod 303c-8 is installed on the bottom of the piston block 303a-2, and the plug rod 303c-8 is located on one side of the top of the through-column 303c-2. When the plug 302b completely enters the oil filling port 103, at this time, the plug rod 303c-8 also embeds into the through-column 303c-2 and contacts the piston rod 303c-3. The piston rod 303c-3 moves downward under the pressure of the plug rod 303c-8. The piston rod 303c-3 moves to press one end of the seesaw 303c-4, so that the other end of the seesaw 303c-4 tilts upward. The tilted seesaw 303c-4 drives the push rod 303c-6 to move, and the push rod 303c-6 moves to drive the cover plate 303c-5 to move. The cover plate 303c-5 moves to open the chassis 303c-1. At this time, the squeezed gas can enter the airbag 303b-1 through the air pipe 303b-2, so that the airbag 303b-1 bulges to seal the oil filling port 103, thereby improving the sealing performance of the oil filling port 103.

[0052] The rest of the structure is the same as that of Embodiment 2.

[0053] During the operation process, the connecting rod 303a-3 is connected to the bottom of the top plate 203a. When the top plate 203a moves downward, its piston block 303a-2 moves downward, causing the gas to be squeezed on the bottom side of the piston block 303a-2. The gas can enter the airbag 303b-1 through the air pipe 303b-2, thereby sealing the oil injection port 103. The small spring 303c-7 is used to restore the rocker 303c-4 to a horizontal state. A plug rod 303c-8 is installed at the bottom of the piston block 303a-2. The plug rod 303c-8 is located on one side of the top of the through column 303c-2. When the plug 302b completely enters the oil injection port 103, at this time, the plug rod 303c-8 also embeds into the through column 303c-2 and contacts the piston rod 303c-3. The piston rod 303c-3 moves downward under the touch pressure of the plug rod 303c-8. The piston rod 303c-3 moves to press one end of the rocker 303c-4, causing the other end of the rocker 303c-4 to tilt upward. The tilted rocker 303c-4 drives the ejector rod 303c-6 to move. The movement of the ejector rod 303c-6 drives the cover plate 303c-5 to move. The movement of the cover plate 303c-5 opens the chassis 303c-1. At this time, the squeezed gas can enter the airbag 303b-1 through the air pipe 303b-2, causing the airbag 303b-1 to bulge and seal the oil injection port 103, thereby improving the sealing performance of the oil injection port 103.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An automatic oil replenishing device for a recyclable electric motor, characterized in that: It includes, An automatic oil replenishing unit (100), including an oil replenishing cylinder (101), an adjusting knob (102) provided on the oil replenishing cylinder (101), an oil injection port (103) provided on the oil replenishing cylinder (101), and an oil outlet (104) provided on the oil replenishing cylinder (101); A locking unit (200), including a holding component (201) provided on the oil replenishing cylinder (101), a telescopic component (202) provided on the oil replenishing cylinder (101), and a locking component (203) provided on the telescopic component (202); The holding component (201) includes an arc-shaped plate (201a) provided on the oil replenishing cylinder (101), a through groove (201b) provided on the arc-shaped plate (201a), and a pressing plate (201c) provided on the arc-shaped plate (201a); The telescopic component (202) includes a bottom block (202a) provided on the oil replenishing cylinder (101), a tension spring (202b) provided on the bottom block (202a), a moving block (202c) provided on the tension spring (202b), and an extrusion member (202d) provided on the bottom block (202a); The extrusion member (202d) includes a vertical inclined block (202d-1) provided at the bottom of the moving block (202c), and a pressing rod (202d-2) provided on the pressing plate (201c) and extending to the bottom side of the vertical inclined block (202d-1); The locking component (203) includes a top plate (203a) provided on the moving block (202c), an embedding block (203b) provided on the top plate (203a), and an embedding hole (203c) provided on the knob; It further includes a sealing unit (300), including a matching component (301) provided on the top plate (203a), a blocking component (302) provided on the matching component (301), and a sealing component (303) provided on the bottom block (202a); The matching component (301) includes a cross plate (301a) provided on the top plate (203a), a compression spring (301b) provided on the cross plate (301a), a slider (301c) provided on the compression spring (301b), and a connecting rope (301d) provided on the slider (301c) and connected to the bottom block (202a).

2. The automatic oil replenishing device for a recyclable electric motor according to claim 1, characterized in that: The blocking component (302) includes an inclined plate (302a) provided on the slider (301c), and a plug (302b) provided on the inclined plate (302a).

3. The automatic oil replenishing device for a recyclable electric motor according to claim 2, characterized in that: The sealing assembly (303) includes a piston member (303a) disposed on the bottom block (202a), a seal (303b) disposed on the plug (302b), and a trigger member (303c) disposed within the piston member (303a).

4. The motor recyclable automatic oil replenishing device according to claim 3, characterized in that: The piston member (303a) includes a cavity (303a-1) disposed on the bottom block (202a), a piston block (303a-2) disposed on the cavity (303a-1), and a connecting rod (303a-3) disposed on the piston block (303a-2).

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