CN111608706B - Self-reset impact-resistant buffer device - Google Patents
Self-reset impact-resistant buffer device Download PDFInfo
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- CN111608706B CN111608706B CN202010319539.9A CN202010319539A CN111608706B CN 111608706 B CN111608706 B CN 111608706B CN 202010319539 A CN202010319539 A CN 202010319539A CN 111608706 B CN111608706 B CN 111608706B
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- 230000003139 buffering effect Effects 0.000 claims abstract description 56
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 45
- 239000003921 oil Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 1
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 description 17
- 108700017836 Prophet of Pit-1 Proteins 0.000 description 17
- 239000003245 coal Substances 0.000 description 8
- 238000005065 mining Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/26—Hydraulic or pneumatic control
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a self-resetting type impact-resistant buffering device which comprises a first hydraulic prop and a buffer, wherein the buffer comprises a first outer cylinder body, the first outer cylinder body is connected with a first cylinder cover, the lower end of the first cylinder cover is connected with a guide rod, and a moving buffering mechanism and a spring resetting buffering mechanism are arranged in the first outer cylinder body; the movable buffer mechanism comprises a first movable cylinder, the upper part of the first movable cylinder is connected with the lower part of the guide rod through a first-stage buffer safety pin, and the first hydraulic prop is communicated with the first outer cylinder body through a first hydraulic oil pipe; spring reset buffer gear includes spacing clamp, first buffer spring and second level buffering safety pin, and spacing clamp cover is on the upper portion of guide bar, and first buffer spring overlaps on the guide bar between spacing clamp and the first cylinder cap, and second level buffering safety pin is pegged graft on the guide bar and the joint is at the lower extreme of spacing clamp. The device can be used for buffering and relieving the instantaneous peak impact pressure borne by the hydraulic prop, the structure is simpler, and the installation and the disassembly are also more convenient.
Description
Technical Field
The invention relates to the field of coal mine safety support, in particular to a self-resetting impact-resistant buffer device.
Background
The fore support is the most important supporting equipment for the end roadway of the coal mining working face, can effectively resist the advance disturbance of the working face in the supporting process, controls the deformation of surrounding rocks and provides a safe operation space for the passage of coal equipment and personnel in the end roadway.
The prior forepoling (including the fully mechanized support of the working face) all depends on the relief valve overflow that the support was equipped with to carry out the release scour protection during the impact pressure comes, and in the time of the in-service use because of the time lag effect of spring relief valve, leads to impact pressure to come the twinkling of an eye, and the relief valve can not open rapidly to lead to the interior closed fluid of support stand to rise rapidly, cause the explosion to hinder a series of problems such as frame, flying valve injure people.
Disclosure of Invention
The invention aims to provide a self-resetting type impact-resistant buffering device which can buffer and release instantaneous peak impact pressure borne by a hydraulic prop, and is simpler in structure and more convenient to mount and dismount.
In order to achieve the purpose, the invention adopts the technical scheme that:
a self-resetting type shock-resistant buffering device comprises a first hydraulic prop and a buffer, wherein the buffer comprises a first outer cylinder body, a first cylinder cover is connected in the upper end part of the first outer cylinder body, a guide rod is fixedly connected at the lower end of the middle part of the first cylinder cover, and a moving buffering mechanism and a spring resetting buffering mechanism are sequentially arranged in the first outer cylinder body from bottom to top; the movable buffer mechanism comprises a first movable cylinder, the upper part of the first movable cylinder is connected with the lower part of the guide rod through a first-stage buffer safety pin, and the first hydraulic prop is communicated with the first outer cylinder body through a first hydraulic oil pipe; spring reset buffer gear includes spacing clamp, first buffer spring and second level buffering safety pin, and spacing clamp cover is on the upper portion of guide bar, and first buffer spring overlaps on the guide bar between spacing clamp and the first cylinder cap, and second level buffering safety pin is pegged graft on the guide bar and the joint is at the lower extreme of spacing clamp.
Preferably, at least one first hydraulic strut is arranged and connected with a hydraulic oil pump through a hydraulic oil conveying pipe; each first hydraulic prop is connected with a first hydraulic oil pipe; one end of the first hydraulic oil pipe is connected with the lower part of the first hydraulic support, an electromagnetic opening and closing valve is connected in series in the first hydraulic oil pipe, a first oil inlet is formed in the outer wall of the lower part of the first outer cylinder body, and the first hydraulic oil pipe is connected with the first outer cylinder body through the first oil inlet.
Preferably, the first movable cylinder comprises a first movable cylinder barrel and a first movable cylinder plug connected to the lower end of the first movable cylinder barrel, the first movable cylinder barrel is cylindrical, the first movable cylinder plug is in a shape of a circular plate, and the outer wall of the first movable cylinder plug is tightly attached to the inner wall of the first outer cylinder body through a first movable sealing ring.
Preferably, a first movable cylinder through hole is formed in the outer wall of the upper portion of the first movable cylinder barrel, and a first rod body through hole is formed in the lower portion of the guide rod;
after the lower part of the guide rod is positioned in the upper part of the first movable cylinder barrel, the first-stage buffering safety pin penetrates through the first rod body through hole and the first movable cylinder through hole to position and connect the first movable cylinder barrel with the guide rod.
Preferably, the first outer cylinder body is cylindrical, the upper end of the first outer cylinder body is provided with an opening, and the first cylinder cover is connected to the first outer cylinder body through a first cylinder cover sealing ring;
the inner diameter value of the first outer cylinder body is larger than the outer diameter value of the first movable cylinder plug, the outer diameter value of the first movable cylinder plug is larger than the outer diameter value of the first movable cylinder barrel, and the inner diameter value of the first movable cylinder barrel is larger than the outer diameter value of the guide rod.
Preferably, a second rod body through hole is formed in the middle of the guide rod, the second-level buffering safety pin is in a circular rod shape, and the second-level buffering safety pin penetrates through the second rod body through hole and then is connected with the lower end face of the limiting clamp.
Preferably, the limiting clamp comprises a first upper limiting plate and a first lower limiting pipe, the first upper limiting plate is sleeved at the outer end of the upper part of the first lower limiting pipe, and the guide rod penetrates through the first lower limiting pipe; the lower end face of the first lower limiting pipe is provided with a semicircular first safety pin clamping groove, and the second-stage buffering safety pin can be clamped into the first safety pin clamping groove in an adaptive mode.
Preferably, the lower end of the first cylinder cover is connected with a pull-wire type sensor assembly, and the pull-wire type sensor assembly is positioned on the left side of the first buffer spring; the stay wire type sensor assembly comprises an upper signal sensor, a middle stay wire and a lower signal locator, wherein the upper signal sensor is fixedly connected with the lower end face of the first cylinder cover, the lower signal locator is connected to the upper end of the limiting clamp, and the upper signal sensor is connected with the lower signal locator through the middle stay wire.
Preferably, the first cylinder cover is provided with a first vent hole, and the first vent hole is positioned on the right side of the first buffer spring.
Preferably, the first buffer spring is a circular spring, a first spring limiting groove is formed in the middle of the lower end face of the first cylinder cover, the first buffer spring is sleeved on the upper portion of the guide rod, and the upper end portion of the first buffer spring is clamped into the first spring limiting groove.
The invention has the beneficial effects that:
the self-resetting impact-resistant buffer device is used for supporting the coal mining working face end lane, and the first hydraulic prop serves as a supporting point for supporting the coal mining working face end lane. And hydraulic oil in the first hydraulic support is communicated with hydraulic oil of the first outer cylinder body below the first movable cylinder through an oil pipe. When the upper end of first hydraulic prop received decurrent overload force, hydraulic oil in the first hydraulic prop can transmit power for the hydraulic oil in first outer cylinder body, and hydraulic oil in the first outer cylinder body transmits power for the first movable cylinder that has been spacing by first order buffering safety pin. When the force exceeds the structural rigidity force of the first-stage buffering safety pin, the first-stage buffering safety pin is broken, and the first movable cylinder rises.
The first movable cylinder is in contact with the second-level buffering safety pin, when the force exceeds the rigidity force of the second-level buffering safety pin, the second-level buffering safety pin is broken, and the first movable cylinder is connected with the limiting clamp. Then the hydraulic oil force borne by the first movable cylinder is unloaded through the elastic buffering force of the first buffering spring, and the first movable cylinder is in a slowly rising state. With the lapse of time, the elastic buffer force of the self of the first buffer spring plays a role of returning to the first hydraulic prop through the first movable cylinder. The self-resetting impact-resistant buffer device is novel in structure, realizes multi-stage buffering of force by arranging the buffer, and is simple and convenient to install and use integrally.
Drawings
In order to clearly illustrate the embodiments or technical solutions of the present invention in the prior art, the drawings used in the description of the embodiments or prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a front view of the overall structure of a self-resetting impact-resistant buffer device.
Fig. 2 is a schematic view of the connection structure of the guide rod, the movement buffer mechanism and the spring return buffer mechanism.
Fig. 3 is an isometric view of a guide bar and spring return cushion connection.
Detailed Description
The invention provides a self-resetting type impact-resistant buffer device, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention is described in detail below with reference to the accompanying drawings:
example 1
With reference to fig. 1 to 3, a self-resetting impact-resistant buffering device comprises two first hydraulic props 1 and a buffer, wherein the buffer comprises a first outer cylinder body 2, a first cylinder cover 21 is connected in the upper end part of the first outer cylinder body 2, the lower end of the middle part of the first cylinder cover 21 is fixedly connected with a guide rod 22, and a moving buffering mechanism 3 and a spring resetting buffering mechanism 4 are sequentially arranged in the first outer cylinder body 2 from bottom to top.
The movable buffer mechanism 3 comprises a first movable cylinder 31, the upper part of the first movable cylinder 31 is connected with the lower part of the guide rod 22 through a first-stage buffer safety pin 32, hydraulic oil is arranged in the first hydraulic prop 1 and the first outer cylinder body 2 below the first movable cylinder 31, the first hydraulic prop 1 is communicated with the first outer cylinder body 2 through a first hydraulic oil pipe 11, and the hydraulic oil in the first hydraulic prop 1 can enter the first outer cylinder body 2 below the first movable cylinder 31 through the first hydraulic oil pipe 11.
The spring return buffer mechanism 4 comprises a limiting clamp 41, a first buffer spring 42 and a second-stage buffer safety pin 43, wherein the limiting clamp 41 is sleeved on the upper portion of the guide rod 22, the first buffer spring 42 is sleeved on the guide rod 22 between the limiting clamp 41 and the first cylinder cover 21, and the second-stage buffer safety pin 43 is inserted into the guide rod 22 and is clamped at the lower end of the limiting clamp 41.
At least one first hydraulic prop 1 is arranged, in the embodiment, two first hydraulic props 1 are arranged, and the first hydraulic props 1 are connected with an external hydraulic oil pump through a hydraulic oil conveying pipe. Each first hydraulic prop 1 is connected with a first hydraulic oil pipe 11; one end of the first hydraulic oil pipe 11 is connected with the lower part of the first hydraulic prop 1, an electromagnetic opening and closing valve 12 is connected in series in the first hydraulic oil pipe 11, a first oil inlet is formed in the outer wall of the lower part of the first outer cylinder body 2, and the first hydraulic oil pipe 11 is connected with the first outer cylinder body 2 through the first oil inlet.
The first movable cylinder 31 includes a first movable cylinder tube 311 and a first movable cylinder plug 312 connected to a lower end of the first movable cylinder tube 311, the first movable cylinder tube 311 is cylindrical, the first movable cylinder plug 312 is disc-shaped, and an outer wall of the first movable cylinder plug 312 is tightly attached to an inner wall of the first outer cylinder body 2 through a first movable seal ring.
A first movable cylinder through hole 313 is formed in the outer wall of the upper part of the first movable cylinder 311, and a first rod body through hole 221 is formed in the lower part of the guide rod 22;
after the lower part of the guide rod 22 is positioned in the upper part of the first movable cylinder 311, the first-stage buffer safety pin 32 passes through the first rod through hole 221 and the first movable cylinder through hole 313, and the first-stage buffer safety pin 32 positions and connects the first movable cylinder 311 and the guide rod 22.
The first outer cylinder body 2 is cylindrical, the upper end of the first outer cylinder body 2 is open, and the first cylinder cover 21 is connected to the first outer cylinder body 2 through a first cylinder cover sealing ring.
The inner diameter value of the first outer cylinder 2 is larger than the outer diameter value of the first movable cylinder stopper 312, the outer diameter value of the first movable cylinder stopper 312 is larger than the outer diameter value of the first movable cylinder 311, and the inner diameter value of the first movable cylinder 311 is larger than the outer diameter value of the guide rod 22.
A second rod body through hole 222 is formed in the middle of the guide rod 22, the second-stage buffering safety pin 43 is in a circular rod shape, and the second-stage buffering safety pin 43 penetrates through the second rod body through hole 222 and then is connected with the lower end face of the limiting clamp 41.
The limiter clamp 41 includes a first upper limiter plate 411 and a first lower limiter tube 412, the first upper limiter plate 411 is fitted over the upper outer end of the first lower limiter tube 412, and the guide bar 22 passes through the first lower limiter tube 412.
The lower end surface of the first lower limiting pipe 412 is provided with a semicircular first safety pin clamping groove 413, and the second-stage buffer safety pin 43 can be clamped into the first safety pin clamping groove 413 in a matching mode.
The lower end of the first cylinder head 21 is connected with a pull sensor assembly 5, and the pull sensor assembly 5 is positioned on the left side of the first buffer spring 42.
The stay wire type sensor assembly 5 comprises an upper signal sensor 51, a middle stay wire 52 and a lower signal locator 53, wherein the upper signal sensor 51 is fixedly connected with the lower end face of the first cylinder cover 21, the lower signal locator 53 is connected to the upper end of the limiting clamp 41, and the upper signal sensor 51 is connected with the lower signal locator 53 through the middle stay wire 52.
The first cylinder cover 21 is provided with a first vent hole 211, and the first vent hole 211 is positioned at the right side of the first buffer spring 42.
The first buffer spring 42 is a circular spring, a first spring limiting groove is formed in the middle of the lower end face of the first cylinder cover 21, the first buffer spring 42 is sleeved on the upper portion of the guide rod 22, and the upper end portion of the first buffer spring 42 is clamped into the first spring limiting groove.
Example 2
The self-resetting impact-resistant buffering device comprises a first hydraulic prop 1 and a buffer, wherein the buffer comprises a first outer cylinder body 2, a first cylinder cover 21 is connected into the upper end part of the first outer cylinder body 2, the lower end of the middle part of the first cylinder cover 21 is fixedly connected with a guide rod 22, and a movable buffering mechanism 3 and a spring resetting buffering mechanism 4 are sequentially arranged in the first outer cylinder body 2 from bottom to top.
The movable buffer mechanism 3 comprises a first movable cylinder 31, the upper part of the first movable cylinder 31 is connected with the lower part of the guide rod 22 through a first-stage buffer safety pin 32, hydraulic oil is arranged in the first hydraulic prop 1 and the first outer cylinder body 2 below the first movable cylinder 31, the first hydraulic prop 1 is communicated with the first outer cylinder body 2 through a first hydraulic oil pipe 11, and the hydraulic oil in the first hydraulic prop 1 can enter the first outer cylinder body 2 below the first movable cylinder 31 through the first hydraulic oil pipe 11.
The spring return buffer mechanism 4 comprises a limiting clamp 41, a first buffer spring 42 and a second-stage buffer safety pin 43, wherein the limiting clamp 41 is sleeved on the upper portion of the guide rod 22, the first buffer spring 42 is sleeved on the guide rod 22 between the limiting clamp 41 and the first cylinder cover 21, and the second-stage buffer safety pin 43 is inserted into the guide rod 22 and is clamped at the lower end of the limiting clamp 41.
At this time, one first hydraulic prop 1 is connected with an external hydraulic oil pump through a hydraulic oil delivery pipe, the hydraulic oil pump is provided with one hydraulic oil pump, and when the self-resetting impact-resistant buffer device is used, the first hydraulic prop 1 completes the support of the roadway.
Example 3
The self-resetting impact-resistant buffer device is used for supporting the coal mining working face end lane, and the first hydraulic prop 1 serves as a supporting point to support the coal mining working face end lane. The hydraulic oil in the first hydraulic prop 1 is communicated with the hydraulic oil in the first external cylinder body 2 below the first movable cylinder 31 through an oil pipe. When the coal working face end lane is not deformed, i.e. the first hydraulic prop 1 is not subjected to overload pressure, the first movable cylinder 31 remains stable and does not move.
When the upper end of the first hydraulic prop 1 is subjected to downward overload force, hydraulic oil in the first hydraulic prop can transmit force to hydraulic oil in the first outer cylinder body, and the hydraulic oil in the first outer cylinder body transmits the force to the first movable cylinder limited by the first-stage buffer safety pin 32. When the force exceeds the structural rigidity force of the first-stage cushion shear pin 32, the first-stage cushion shear pin 32 is broken and the first cylinder 31 is lifted.
The first movable cylinder 31 is in contact with the second-stage buffer safety pin 43, when the force exceeds the rigidity force of the second-stage buffer safety pin 43, the second-stage buffer safety pin 43 is broken, and the first movable cylinder 31 is connected with the limiting clamp 41. Then, the hydraulic oil force applied to the first cylinder 31 is relieved by the elastic relief force of the first relief spring 42, and the first cylinder 31 is in a slowly rising state. As time passes, the self elastic damping force of the first damping spring 42 acts to return the first hydraulic prop 1 via the first movable cylinder 31. The self-resetting impact-resistant buffer device is novel in structure, realizes multi-stage buffering of force by arranging the buffer, and is simple and convenient to install and use integrally.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. A self-resetting type shock-resistant buffering device is characterized by comprising a first hydraulic prop and a buffer, wherein the buffer comprises a first outer cylinder body, a first cylinder cover is connected in the upper end part of the first outer cylinder body, the lower end of the middle part of the first cylinder cover is fixedly connected with a guide rod, and a moving buffering mechanism and a spring resetting buffering mechanism are sequentially arranged in the first outer cylinder body from bottom to top; the movable buffer mechanism comprises a first movable cylinder, the upper part of the first movable cylinder is connected with the lower part of the guide rod through a first-stage buffer safety pin, and the first hydraulic prop is communicated with the first outer cylinder body through a first hydraulic oil pipe; spring reset buffer gear includes spacing clamp, first buffer spring and second level buffering safety pin, and spacing clamp cover is on the upper portion of guide bar, and first buffer spring overlaps on the guide bar between spacing clamp and the first cylinder cap, and second level buffering safety pin is pegged graft on the guide bar and the joint is at the lower extreme of spacing clamp.
2. The self-resetting impact-resistant buffering device according to claim 1, wherein at least one first hydraulic strut is arranged, and the first hydraulic strut is connected with a hydraulic oil pump through a hydraulic oil conveying pipe; each first hydraulic prop is connected with a first hydraulic oil pipe; one end of the first hydraulic oil pipe is connected with the lower part of the first hydraulic support, an electromagnetic opening and closing valve is connected in series in the first hydraulic oil pipe, a first oil inlet is formed in the outer wall of the lower part of the first outer cylinder body, and the first hydraulic oil pipe is connected with the first outer cylinder body through the first oil inlet.
3. The self-resetting impact-resistant buffering device according to claim 1, wherein the first movable cylinder comprises a first movable cylinder barrel and a first movable cylinder plug connected to the lower end of the first movable cylinder barrel, the first movable cylinder barrel is cylindrical, the first movable cylinder plug is disc-shaped, and the outer wall of the first movable cylinder plug is tightly attached to the inner wall of the first outer cylinder body through a first movable sealing ring.
4. The self-resetting impact-resistant buffering device according to claim 3, wherein a first movable cylinder through hole is formed in an outer wall of an upper portion of the first movable cylinder barrel, and a first rod body through hole is formed in a lower portion of the guide rod;
after the lower part of the guide rod is positioned in the upper part of the first movable cylinder barrel, the first-stage buffering safety pin penetrates through the first rod body through hole and the first movable cylinder through hole to connect the first movable cylinder barrel with the guide rod in a positioning mode.
5. The self-resetting impact-resistant buffering device according to claim 3, wherein the first outer cylinder body is cylindrical, the upper end of the first outer cylinder body is open, and the first cylinder cover is connected to the first outer cylinder body through a first cylinder cover sealing ring;
the inner diameter value of the first outer cylinder body is larger than the outer diameter value of the first movable cylinder plug, the outer diameter value of the first movable cylinder plug is larger than the outer diameter value of the first movable cylinder barrel, and the inner diameter value of the first movable cylinder barrel is larger than the outer diameter value of the guide rod.
6. The self-resetting impact-resistant buffering device according to claim 4, wherein a second rod through hole is formed in the middle of the guide rod, the second-stage buffering safety pin is in a circular rod shape, and the second-stage buffering safety pin penetrates through the second rod through hole and then is connected with the lower end face of the limiting clamp.
7. The self-resetting impact-resistant buffer device according to claim 1, wherein the limiting clamp comprises a first upper limiting plate and a first lower limiting pipe, the first upper limiting plate is sleeved at the upper outer end of the first lower limiting pipe, and the guide rod penetrates through the first lower limiting pipe; the lower end face of the first lower limiting pipe is provided with a semicircular first safety pin clamping groove, and the second-stage buffering safety pin can be clamped into the first safety pin clamping groove in an adaptive mode.
8. The self-resetting impact-resistant buffering device according to claim 1, wherein a pull-wire type sensor assembly is connected to the lower end of the first cylinder head, and the pull-wire type sensor assembly is positioned on the left side of the first buffering spring; the stay wire type sensor assembly comprises an upper signal sensor, a middle stay wire and a lower signal locator, wherein the upper signal sensor is fixedly connected with the lower end face of the first cylinder cover, the lower signal locator is connected to the upper end of the limiting clamp, and the upper signal sensor is connected with the lower signal locator through the middle stay wire.
9. The self-resetting impact-resistant buffering device of claim 1, wherein the first cylinder cover is provided with a first vent hole, and the first vent hole is positioned on the right side of the first buffering spring.
10. The self-resetting impact-resistant buffering device according to claim 1, wherein the first buffering spring is a circular spring, a first spring limiting groove is formed in the middle of the lower end surface of the first cylinder cover, the first buffering spring is sleeved on the upper portion of the guide rod, and the upper end portion of the first buffering spring is clamped into the first spring limiting groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010319539.9A CN111608706B (en) | 2020-04-22 | 2020-04-22 | Self-reset impact-resistant buffer device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010319539.9A CN111608706B (en) | 2020-04-22 | 2020-04-22 | Self-reset impact-resistant buffer device |
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| CN111608706A CN111608706A (en) | 2020-09-01 |
| CN111608706B true CN111608706B (en) | 2021-11-09 |
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| CN202010319539.9A Active CN111608706B (en) | 2020-04-22 | 2020-04-22 | Self-reset impact-resistant buffer device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1590556A1 (en) * | 1988-02-15 | 1990-09-07 | Предприятие П/Я А-1922 | Thust prop |
| CN102191942A (en) * | 2011-04-14 | 2011-09-21 | 孙敏 | Full-automatic hydraulic prop |
| CN205400761U (en) * | 2016-03-10 | 2016-07-27 | 湖北万安通复合再制造科技有限公司 | Single -body hydraulic supporter |
| CN109838491A (en) * | 2019-03-08 | 2019-06-04 | 上海理工大学 | A kind of multistage hydraulic buffer with tapered rod of gas reset |
-
2020
- 2020-04-22 CN CN202010319539.9A patent/CN111608706B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1590556A1 (en) * | 1988-02-15 | 1990-09-07 | Предприятие П/Я А-1922 | Thust prop |
| CN102191942A (en) * | 2011-04-14 | 2011-09-21 | 孙敏 | Full-automatic hydraulic prop |
| CN205400761U (en) * | 2016-03-10 | 2016-07-27 | 湖北万安通复合再制造科技有限公司 | Single -body hydraulic supporter |
| CN109838491A (en) * | 2019-03-08 | 2019-06-04 | 上海理工大学 | A kind of multistage hydraulic buffer with tapered rod of gas reset |
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| Publication number | Publication date |
|---|---|
| CN111608706A (en) | 2020-09-01 |
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