A WK-20 type electric shovel traveling air path pipeline

Abstract

The application discloses a WK-20 type electric shovel walking gas path pipeline, which comprises a gas source unit, a compressor, an alcohol tank connected with the compressor, liquid alcohol contained in the alcohol tank, an inlet and an outlet arranged on the alcohol tank, a thawing unit and an air outlet pipe connected with the outlet at one end. The device solves the problem that walking brake cannot be opened due to frozen frost on the walking gas path in winter to a large extent through the additional modification of the WK-20 electric shovel walking gas path, and an effective method for quickly thawing and unfreezing the frozen frost on the gas path is provided. Compared with the previous method of gradually checking, removing and thawing and then reinstalling, the device liberates manpower and material resources, greatly reduces the probability of frozen frost and improves the maintenance efficiency.

Description

Technical Field

[0001] This invention relates to the field of pneumatic systems for electric shovels, and in particular to a pneumatic system pipeline for the WK-20 type electric shovel. Background Technology

[0002] When the WK-20 electric shovel is in motion, the brake must be opened by pressurized gas through the travel air passage to release the travel mechanism and complete the travel operation. However, the original design and manufacturing of this shovel did not take into account the winter operation in cold regions. In low temperatures, the travel air passage is prone to frost and freezing, making it difficult to open the travel brake during travel. The previous solution required using an adjustable wrench to disassemble each joint of the air pipe for inspection. After finding the blocked section of the air pipe, a new air pipe was replaced. If necessary, the quick exhaust valve on the brake also needed to be disassembled to thaw it and then reinstalled. The process was cumbersome, time-consuming, and labor-intensive, which affected the travel operation and delayed the coal supply efficiency in winter. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this section, the abstract and title of the invention. Such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0005] Therefore, the technical problem to be solved by the present invention is that the previous solutions required using an adjustable wrench to disassemble each joint of the air pipe for inspection, and after finding the blocked section of the air pipe, a new air pipe was replaced. If necessary, the quick exhaust valve on the brake also needed to be disassembled to thaw it and then reinstalled. The process was cumbersome, time-consuming and labor-intensive, and it affected the progress of walking operations and delayed the efficiency of coal supply in winter.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a WK-20 type electric shovel walking air pipeline, comprising an air source unit, including an air compressor and an alcohol tank connected to the air compressor, wherein the alcohol tank contains liquid alcohol and the alcohol tank is provided with an inlet and an outlet;

[0007] The defrosting unit includes an air outlet duct, one end of which is connected to an outlet.

[0008] As a preferred embodiment of the WK-20 electric shovel's air pipeline of the present invention, the inlet and outlet are both located above the alcohol surface. The inlet is connected to an inlet pipe inside the alcohol tank, and the inlet pipe extends below the alcohol surface. The air compressor outlet is connected to the inlet through a pipe.

[0009] As a preferred embodiment of the WK-20 electric shovel's air path pipeline of the present invention, an oil-water separator is also provided in the pipeline between the inlet and the air compressor to reduce the concentration of oil and water substances in the compressed gas.

[0010] As a preferred embodiment of the WK-20 electric shovel's walking air duct of the present invention, the air outlet of the air duct is connected to the walking brake of the electric shovel.

[0011] As a preferred embodiment of the WK-20 electric shovel's walking air pipeline of the present invention, wherein: a tee is provided on the air outlet pipe, valves are provided at both ends of the tee connected to the air outlet pipe, and a connecting component is connected to the third end of the tee;

[0012] The connecting assembly includes a fixed pipe connected to the tee and a plug connected to the fixed pipe, the plug having a first channel;

[0013] The connector is connected to an inlet pipe.

[0014] As a preferred embodiment of the WK-20 electric shovel's walking air pipeline of the present invention, wherein: the fixed pipe has a through channel inside, the end of the fixed pipe connected to the plug is provided with a connecting plate, the inner side of the connecting plate is provided with a sliding groove, and a slider is provided in the sliding groove; the end of the slider near the fixed pipe is provided with an inclined surface to form a wedge shape;

[0015] The connector is provided with a connecting post, and the connecting post is provided with a first annular groove and a second annular groove, with the first annular groove being close to the end of the connecting post;

[0016] The fixed tube is provided with an annular platform inside. The annular platform is provided with an axially extending annular groove on one end face near the connecting plate. A first annular ring is provided in the annular groove. A second annular ring is provided between the first annular ring and the annular platform. The second annular ring is provided with an annular groove at one end inside the annular groove. A limiting boss is provided at one end of the first annular ring and embedded in the annular groove.

[0017] A first spring is provided between the first annular ring and the bottom of the annular groove;

[0018] A second spring is provided between the second annular ring and the bottom of the annular groove.

[0019] As a preferred embodiment of the WK-20 electric shovel's walking air pipeline of the present invention, wherein: a long groove is provided on the side of the annular platform, and a frustum is provided on the inner side of the second annular ring, with the frustum passing through the long groove;

[0020] The annular platform has a rotating ring inside, and a spiral groove is provided on the outer periphery of the rotating ring. The annular platform is embedded in the spiral groove.

[0021] The fixed tube has a spherical groove inside, and a sphere is placed inside the spherical groove. The sphere has a through hole, and the spherical groove has a rotating hole. The sphere has a rotating shaft, and the axis of the rotating shaft is perpendicular to the axis of the through hole and the axis of the fixed tube. The rotating shaft is embedded in the rotating hole.

[0022] As a preferred embodiment of the WK-20 type electric shovel walking air pipeline of the present invention, wherein: the fixed pipe is provided with a rotating ring groove that intersects with the rotating hole, an adjusting ring is provided in the rotating ring groove, an end face gear is provided on the end face gear, and the rotating shaft is provided with a driven wheel that meshes with the end face gear;

[0023] One end of the rotating ring groove is provided with a channel that extends through to the fixed pipe, and the adjusting ring is fixedly connected to the rotating ring.

[0024] As a preferred embodiment of the WK-20 electric shovel's walking air pipeline of the present invention, the slide groove is provided with a guide groove on its side, the slider is provided with a guide block embedded in the guide groove, and a third spring is provided on the end face of the guide block and the guide groove away from the fixed pipe.

[0025] As a preferred embodiment of the WK-20 electric shovel's walking air pipeline of the present invention, the fixed pipe is provided with a strip-shaped groove extending axially and penetrating the guide groove on its outer periphery; the fixed pipe is fitted with a separation ring, and a separation rod is connected to the inner side of the separation ring, with the separation rod located inside the strip-shaped groove;

[0026] The separating rod has a ramp at one end near the guide block, and the end face of the guide block contacts the tip of the ramp.

[0027] The beneficial effects of this invention are as follows: By modifying the travel air circuit of the WK-20 electric shovel, the problem of the travel brake being unable to open due to freezing and frost in the travel air circuit during winter is largely solved. Furthermore, an effective method for quickly thawing and de-icing the air circuit after freezing and frost is provided. Compared with the previous method of gradually checking, removing, thawing, and reinstalling, this device frees up manpower and resources, greatly reduces the probability of freezing and frost, and improves maintenance efficiency.

[0028] The gas circuit can be vented and alcohol can be added via a connecting assembly, making operation convenient. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0030] Figure 1 A diagram of the air duct for the WK-20 electric shovel, provided as an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the alcohol tank in the walking air pipeline of the WK-20 electric shovel according to an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the WK-20 electric shovel's walking air passage tee and connecting assembly according to an embodiment of the present invention;

[0033] Figure 4 This is a complete schematic diagram of the WK-20 electric shovel's air circulation pipeline according to one embodiment of the present invention;

[0034] Figure 5 A schematic diagram of the connector in the pneumatic pipeline of the WK-20 electric shovel according to an embodiment of the present invention;

[0035] Figure 6 A schematic diagram of the regulating ring in the air passage of the WK-20 electric shovel according to an embodiment of the present invention;

[0036] Figure 7 An exploded schematic diagram of the connecting components in the walking air pipeline of the WK-20 electric shovel, as provided in one embodiment of the present invention;

[0037] Figure 8 A preliminary connection diagram of the connecting components in the walking air pipeline of the WK-20 electric shovel according to an embodiment of the present invention is provided.

[0038] Figure 9 A schematic diagram illustrating the connection of the connecting components in the walking air pipeline of the WK-20 electric shovel according to an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the connection components in the walking air pipeline of the WK-20 electric shovel, as described in one embodiment of the present invention, when they are separated. Detailed Implementation

[0040] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0043] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0044] Example 1

[0045] Reference Figures 1-4 This embodiment provides a WK-20 type electric shovel travel air pipeline, including an air source unit 100 and a defrosting unit 200. The air source unit 100 provides compressed gas and includes an air compressor 101 and an alcohol tank 102 connected to the air compressor 101. The alcohol tank 102 contains liquid alcohol, so that the pressurized gas is filled with ethanol gas molecules with high volatility and low melting point, so as to achieve the purpose of frost and freeze prevention of the air pipeline.

[0046] The alcohol tank 102 is equipped with an inlet 102a and an outlet 102b; the gas generated by the air compressor 101 enters the alcohol tank 102 from the inlet 102a and then exits from the outlet 102b.

[0047] Furthermore, the defrosting unit 200 includes an air outlet 201, one end of which is connected to the outlet 102b. The air outlet of the air outlet 201 is connected to the travel brake of the electric shovel. In this embodiment, the air outlet 201 is the travel air passage of the electric shovel. When the WK-20 electric shovel travels, it must open the brake in the form of pressurized gas through the travel air passage to release the travel mechanism and complete the travel operation task.

[0048] Preferably, both inlet 102a and outlet 102b are located above the alcohol surface. Inlet 102a is connected to inlet pipe 102c inside the alcohol tank 102, extending below the alcohol surface. The outlet of air compressor 101 is connected to inlet 102a via a pipe. Therefore, the intake air loses moisture through the adsorption of alcohol, while the pressurized gas is filled with highly volatile, low-melting-point ethanol gas molecules, achieving the purpose of preventing frost and freezing in the gas pipeline.

[0049] Preferably, an oil-water separator 103 is also installed in the pipeline between the inlet 102a and the air compressor 101 to reduce the concentration of oil and water substances in the compressed gas.

[0050] Furthermore, a tee 202 is installed on the air outlet duct 201. Valves 203 are installed at both ends of the tee 202 and the air outlet duct 201. A connecting component 300 is connected to the third end of the tee 202. One end of the tee connected to the connecting component 300 can directly add alcohol into the air duct. When the air outlet duct 201 is severely frozen, the two valves 203 are closed. Then, pressurized gas is discharged through the connecting component 300 and alcohol is directly added. The connecting component 300 is closed and the two valves 203 are opened. The pressurized gas is used to quickly carry the alcohol into the lower air duct to achieve the purpose of de-icing and thawing.

[0051] The connecting component 300 includes a fixed pipe 301 connected to the tee 103 and a plug 302 connected to the fixed pipe 301. The plug 302 is provided with a first channel 302a.

[0052] The connector 302 is connected to the inlet pipe 400. The inlet pipe 400 is used to discharge pressurized gas and add alcohol.

[0053] By modifying the travel air circuit of the WK-20 electric shovel, the problem of the travel brake being unable to open due to freezing and frost in the travel air circuit during winter has been largely solved. An effective method for quickly thawing the frozen air circuit has also been provided. Compared with the previous method of gradually checking, removing, thawing, and reinstalling, this device saves manpower and resources, greatly reduces the probability of freezing and frost, and improves maintenance efficiency.

[0054] Example 2

[0055] Reference Figures 4-10 This is the second embodiment of the present invention, which is based on the previous embodiment and differs from the previous embodiment in that:

[0056] The fixed tube 301 has a through channel that connects to the inside of the tee 202. A connecting plate 301a is provided at the end of the fixed tube 301 that connects to the connector 302. The connecting plate 301a is integrally formed with the fixed tube 301. A sliding groove 301b is provided on the inner side of the connecting plate 301a. Two or more sliding grooves 301b can be symmetrically arranged. A slider 308 is provided inside the sliding groove 301b. The slider 308 can move within the sliding groove 301b. An inclined surface is provided at the end of the slider 308 near the fixed tube 301, forming a wedge shape. That is, when the connector 302 is inserted into the fixed tube 301, the end face of the connector 302 contacts the inclined surface and presses the slider 308, causing it to retract within the sliding groove 301b.

[0057] Furthermore, the connector 302 is provided with a connecting post 302b, on which a first annular groove 302c and a second annular groove 302d are provided, with the first annular groove 302c being close to the end of the connecting post 302b. Therefore, when the connector 302 is inserted into the fixing tube 301, the slider 308 first embeds itself into the first annular groove 302c. Then, as the connector 302 continues to be inserted into the fixing tube 301, the slider 308 moves out of the first annular groove 302c and into the second annular groove 302d. At this point, the connecting post 302b is completely embedded in the fixing tube 301.

[0058] The fixed tube 301 has an annular platform 301c inside. The inner diameter of the annular platform 301c is smaller than the inner diameter of the fixed tube 301. The annular platform 301c has an axially extending annular groove 301d on one end face near the connecting plate 301a. The opening of the annular groove 301d faces the plug 302. The outer diameter of the annular groove 301d is the same as the inner diameter of the fixed tube 301, and the inner diameter of the annular groove 301d is larger than the inner diameter of the annular platform 301c.

[0059] A first annular ring 303 is provided in the annular groove 301d, and the first annular ring 303 can move within the annular groove 301d. A second annular ring 304 is provided between the first annular ring 303 and the annular platform 301c, and the second annular ring 304 can also move within the annular groove 301d.

[0060] The second annular ring 304 has an annular groove 304a at one end inside the annular groove 301d. The outer diameter of the annular groove 304a is smaller than the outer diameter of the second annular ring 304. The first annular ring 303 has a limiting boss 303a at one end that is embedded in the annular groove 304a. The inner diameter of the limiting boss 303a is smaller than the outer diameter of the second annular ring 304, forming a sleeve structure. A first spring 303c is provided between the first annular ring 303 and the bottom of the annular groove 301d. A second spring 304c is provided between the second annular ring 304 and the bottom of the annular groove 301d. Therefore, under the action of the spring, the sleeve composed of the first annular ring 303 and the second annular ring 304 is in its longest state. So when the connector 302 enters the fixed tube 301 and passes the slider 308, it first contacts the second annular ring 304 and pushes the second annular ring 304. When the end face of the second annular ring 304 is pushed to be flush with the end face of the first annular ring 303, the second annular ring 304 and the first annular ring 303 will be pushed at the same time.

[0061] The annular platform 301c has a long groove 301e on its side, and the second annular ring 304 has a frustum 304b on its inner side, which passes through the long groove 301e; that is, the long groove 301e can limit the movement range of the second annular ring 304.

[0062] When the slider 308 is inserted into the first annular groove 302c, the connector 302 pushes the first annular ring 303 to move until its end face coincides with the end face of the second annular ring 304. When the slider 308 is inserted into the second annular groove, the connector 302 pushes the first annular ring 303 and the second annular ring 304 to move, and the frustum 304b moves from one end of the long groove 301e to the other end.

[0063] Furthermore, a rotating ring 305 is provided inside the annular stage 301c, and a spiral groove 305a is provided on the outer periphery of the rotating ring 305. The frustum 304b is embedded in the spiral groove 305a. Therefore, when the second annular ring 304 and the first annular ring 303 are pushed simultaneously, the frustum 304b moves within the elongated groove 301e and drives the rotating ring 305 to rotate. The rotating ring 305 can only rotate inside the fixed tube 301 and cannot move axially.

[0064] Correspondingly, a spherical groove 301f is provided inside the fixed tube 301. The diameter of the spherical groove 301f is larger than the inner diameter of the internal channel of the fixed tube 301. A sphere 306 is provided inside the spherical groove 301f. The sphere 306 is provided with a through hole 306a. Therefore, when the through hole 306a is coaxial with the fixed tube 301, the internal channel of the fixed tube 301 is through. When the operating through hole 306a is deflected by 90°, the internal channel of the fixed tube 301 is closed.

[0065] The spherical groove 301f is provided with a rotating hole 301g, and the sphere 306 is provided with a rotating shaft 306b. The axis of the rotating shaft 306b is perpendicular to the axis of the through hole 306a and the axis of the fixed tube 301. The rotating shaft 306b is embedded in the rotating hole 301g.

[0066] The fixed tube 301 is provided with a rotating annular groove 301h that intersects with the rotating hole 301g. An adjusting ring 307 is provided in the rotating annular groove 301h. An end face gear 307a is provided on the end face of the adjusting ring 307. A driven wheel 306c that meshes with the end face gear 307a is provided on the rotating shaft 306b. Since the driven wheel 306c is a gear, when the adjusting ring 307 rotates, it drives the driven wheel 306c and the ball 306 to rotate.

[0067] One end of the rotating annular groove 301h is provided with a channel extending through to the fixed tube 301, and the adjusting ring 307 is fixedly connected to the rotating ring 305. Preferably, the adjusting ring 307 and the rotating ring 305 are integrally formed, that is, composed of a large cylinder and a small cylinder, and connected by an annular disc. When the moving length of the second annular ring 304 is the length of the long groove 301e, the rotating ring 305 rotates, and the end face gear 307a can drive the driven wheel 306c to rotate 90°, that is, change the state of the internal channel of the fixed tube 301.

[0068] Therefore, when the fixing tube 301 and the plug 302 of the connecting assembly 300 are not connected, the fixing tube 301 is in a sealed state. When the plug 302 is inserted into the fixing tube 301 for the first time, the fixing tube 301 is still in a sealed state. Only when the plug 302 continues to be inserted into the fixing tube 301 for complete fixation (i.e., the slider 308 enters the second annular groove 302d) does the fixing tube 301 change from a closed state to a connected state, and at this time the connecting assembly 300 is completely transparent.

[0069] It should be noted that when separating the fixing tube 301 and the connector 302, the fixing tube 301 should close its internal channel first, and then the separation should be performed.

[0070] Furthermore, a guide groove 301i is provided on the side of the slide groove 301b, and a guide block 308 is provided with a guide block 308a embedded in the guide groove 301i. A third spring 308b is provided on the end face of the guide block 308a and the guide groove 301i away from the fixed tube 301. Under the action of the third spring 308b, the slide block 308 extends into the internal channel of the fixed tube 301. A strip groove 301j extending axially and penetrating the guide groove 301i is provided on the outer periphery of the fixed tube 301. A separation ring 309 is provided on the outer sleeve of the fixed tube 301. A separation rod 309a is connected to the inner side of the separation ring 309. The separation rod 309a is located in the strip groove 301j. When the third spring 308b is extended, the end face of the guide block 308a near the center of the fixed tube 301 contacts the end face of the guide groove 301i.

[0071] Preferably, a spring is provided between the separating ring 309 and the connecting plate 301a, and under the action of the spring, the separating ring 309 is away from the connecting plate 301a.

[0072] The separating rod 309a has a ramp 309b at one end near the guide block 308a. The end face of the guide block 308a contacts the tip of the ramp 309b. Therefore, when it is necessary to separate the fixing tube 301 from the connector 302, the separating ring 309 is operated to overcome the spring force so that the tip of the ramp 309b is inserted into the gap between the end face of the guide block 308a and the guide groove 301i, thereby retracting the slider 308 into the groove 301b. Then, under the action of the first spring and the second spring, the second annular ring 304 is reset first, and at the same time, the ball 306 rotates 90°, the fixing tube 301 closes the internal channel, and then the first annular ring is reset, and then the separation is performed.

[0073] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0074] 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 it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A WK-20 type electric shovel travel air pipeline, characterized in that: include, The air source unit (100) includes an air compressor (101) and an alcohol tank (102) connected to the air compressor (101). The alcohol tank (102) contains liquid alcohol and has an inlet (102a) and an outlet (102b). The defrosting unit (200) includes an air outlet duct (201), one end of which is connected to an outlet (102b); The inlet (102a) and outlet (102b) are both located above the alcohol surface. The inlet (102a) is connected to an inlet pipe (102c) inside the alcohol tank (102). The inlet pipe (102c) extends below the alcohol surface. The outlet of the air compressor (101) is connected to the inlet (102a) through a pipe. An oil-water separator (103) is also installed in the pipeline between the inlet (102a) and the air compressor (101) to reduce the concentration of oil and water substances in the compressed gas; The air outlet of the air outlet pipe (201) is connected to the travel brake of the electric shovel; The air outlet pipe (201) is provided with a tee (202), and valves (203) are provided at both ends of the tee (202) connected to the air outlet pipe (201). A connecting component (300) is connected to the third end of the tee (202). The connecting assembly (300) includes a fixed pipe (301) connected to the tee (202) and a plug (302) connected to the fixed pipe (301), the plug (302) being provided with a first channel (302a). The connector (302) is connected to the liquid inlet pipe (400); The fixed tube (301) has a through channel inside. A connecting plate (301a) is provided at one end of the fixed tube (301) that is connected to the plug (302). A sliding groove (301b) is provided inside the connecting plate (301a). A slider (308) is provided in the sliding groove (301b). A wedge shape formed by an inclined surface is provided at one end of the slider (308) near the fixed tube (301). The connector (302) is provided with a connecting post (302b), and the connecting post (302b) is provided with a first annular groove (302c) and a second annular groove (302d), the first annular groove (302c) being close to the end of the connecting post (302b); The fixed tube (301) is provided with an annular platform (301c) inside. The annular platform (301c) is provided with an axially extending annular groove (301d) on one end face near the connecting plate (301a). A first annular ring (303) is provided in the annular groove (301d). A second annular ring (304) is provided between the first annular ring (303) and the annular platform (301c). The second annular ring (304) is provided with an annular groove (304a) at one end inside the annular groove (301d). A limiting boss (303a) is provided at one end of the first annular ring (303) that is embedded in the annular groove (304a). A first spring (303c) is provided between the bottom of the first annular ring (303) and the annular groove (301d). A second spring (304c) is provided between the bottom of the second annular ring (304) and the annular groove (301d). The annular platform (301c) has a long groove (301e) on its side, and the second annular ring (304) has a frustum (304b) on its inner side, which passes through the long groove (301e). The annular platform (301c) has a rotating ring (305) inside, and a spiral groove (305a) is provided on the outer periphery of the rotating ring (305). The truncated cone (304b) is embedded in the spiral groove (305a). The fixed tube (301) is provided with a spherical groove (301f) inside, and a sphere (306) is provided in the spherical groove (301f). The sphere (306) is provided with a through hole (306a) and a rotating hole (301g) in the spherical groove (301f). The sphere (306) is provided with a rotating shaft (306b). The axis of the rotating shaft (306b) is perpendicular to the axis of the through hole (306a) and the axis of the fixed tube (301). The rotating shaft (306b) is embedded in the rotating hole (301g). The fixed tube (301) is provided with a rotating annular groove (301h) that intersects with the rotating hole (301g). An adjusting ring (307) is provided in the rotating annular groove (301h). An end face gear (307a) is provided on the end face of the adjusting ring (307). The rotating shaft (306b) is provided with a driven wheel (306c) that meshes with the end face gear (307a). One end of the rotating ring groove (301h) is provided with a channel that extends through to the fixed tube (301), and the adjusting ring (307) is fixedly connected to the rotating ring (305); The slide (301b) is provided with a guide groove (301i) on its side, and the slider (308) is provided with a guide block (308a) embedded in the guide groove (301i). A third spring (308b) is provided on the end face of the guide block (308a) and the guide groove (301i) away from the fixed tube (301). The fixed tube (301) has a strip groove (301j) extending axially and penetrating the guide groove (301i) on its outer periphery; the fixed tube (301) is fitted with a separation ring (309), and a separation rod (309a) is connected to the inner side of the separation ring (309), and the separation rod (309a) is located in the strip groove (301j); The separating rod (309a) has a ramp (309b) at one end near the guide block (308a), and the end face of the guide block (308a) contacts the tip of the ramp (309b).

Images