CN209872297U - Length-adjustable explosion-proof crow bar - Google Patents
Length-adjustable explosion-proof crow bar Download PDFInfo
- Publication number
- CN209872297U CN209872297U CN201920492980.XU CN201920492980U CN209872297U CN 209872297 U CN209872297 U CN 209872297U CN 201920492980 U CN201920492980 U CN 201920492980U CN 209872297 U CN209872297 U CN 209872297U
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- CN
- China
- Prior art keywords
- crow bar
- hole
- handle
- guide
- bar body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000005728 strengthening Methods 0.000 claims abstract description 5
- 241001655249 Corvus brachyrhynchos Species 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an explosion-proof crow bar with adjustable length relates to crow bar technical field, this explosion-proof crow bar with adjustable length, including the crow bar body, the one end swing joint of crow bar body has the handle, the one end that the crow bar body is close to the handle is provided with screw hole, guiding hole and gas pocket respectively, the screw hole is located the axis position department of crow bar body, a plurality of the guiding hole distributes around the screw hole, the inside of crow bar body is provided with the passageway, the passageway communicates with screw hole, gas pocket and guiding hole mutually, the inner wall of guiding hole and the surface swing joint of guide bar, guide bar fixed connection is in the one end of handle, the surface of guide bar is located the crow bar body and radially is provided with the strengthening rib. The utility model discloses a set up gas pocket, passageway, guide bar, screw rod and handle, it is fixed to have solved present common crow bar length, can not adjust length and lead to awkward problem.
Description
Technical Field
The utility model relates to a crow bar technical field specifically is an explosion-proof crow bar with adjustable length.
Background
The crow bar is a common tool in engineering, is usually made of metal, has one end in a wedge shape and is bent, and actually is a bar, and works by utilizing the lever principle, and the longer the power arm is, the more labor is saved; the explosion-proof crow bar is often used in fire engineering and oil coal mine engineering and is an essential tool in work.
The longer the length of explosion-proof crowbar is more laborsaving, the shorter the length is more convenient to carry, but present common crowbar length all is fixed, can not adjust length and lead to the use inconvenient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide an explosion-proof crow bar with adjustable length, it is fixed to have solved present common crow bar length, can not adjust length and lead to awkward problem.
The utility model provides a its technical problem realize through following technical scheme:
an explosion-proof crow bar with adjustable length comprises a crow bar body, wherein a handle is movably connected at one end of the crow bar body, a threaded hole, a guide hole and an air hole are respectively formed in one end, close to the handle, of the crow bar body, the threaded hole is located at the axis position of the crow bar body, a plurality of guide holes are distributed around the threaded hole, a channel is arranged inside the crow bar body and is communicated with the threaded hole, the air hole and the guide hole, the inner wall of the guide hole is movably connected with the surface of the guide rod, the guide rod is fixedly connected at one end of the handle, reinforcing ribs are radially arranged on the surface of the guide rod and located at the position, corresponding to the reinforcing ribs, of the inside of the guide hole are provided with a sliding groove, the inner wall of the sliding groove is movably connected with the surface of the reinforcing ribs, a screw rod is connected with internal threads of the threaded hole, one, and a limiting mechanism is arranged between the screw rod and the handle.
And the plurality of guide holes are distributed in an annular array by taking the center of the threaded hole as an array center.
And, the channel is located at the left end of the guide hole, the screw hole and the air hole.
And the sum of the vertical cross-sectional areas of the guide hole, the threaded hole and the air hole is equal to half of the area of the right end of the crow bar body.
And, stop gear includes spacing groove and spacing dish, the inner wall of spacing groove and the surperficial swing joint of spacing dish, the fixed cover of spacing dish connects on the surface of screw rod, the spacing groove sets up the both ends at the handle.
The utility model discloses an advantage and beneficial effect do:
1. the utility model discloses an explosion-proof crow bar with adjustable length, through setting up the gas pocket, the passageway, the guide bar, screw rod and handle, hold handle bending handle and rotate the handle, the handle just can drive the screw rod and rotate the outside removal that makes the screw rod drive handle and guide bar follow screw hole and guide hole crow bar body, gas pocket and passageway are used for balanced screw hole, the atmospheric pressure of guide hole, reach the effect of extension crow bar body length, make and use laborsaving reduction intensity of labour, the contra rotation handle just can insert in the guide hole through screw rod area guide bar, realize crow bar body length adjustable purpose, it all is fixed to have solved present common crow bar length, can not adjust length and lead to the inconvenient problem of use.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front sectional view of the handle of the present invention;
FIG. 3 is a side sectional view of the guide bar of the present invention;
fig. 4 is a side sectional view of the channel of the present invention.
In the figure: 1. a crow bar body; 2. a handle; 3. a threaded hole; 4. a guide hole; 5. air holes; 6. a channel; 7. a guide bar; 8. reinforcing ribs; 9. a chute; 10. a screw; 11. a handle; 12. a limiting mechanism; 1201. a limiting groove; 1202. a limiting disc.
Detailed Description
The present invention will be described in further detail with reference to specific examples, which are provided for illustrative purposes only, and are not intended to be limiting, and the scope of the present invention should not be limited thereby.
An explosion-proof crowbar with adjustable length comprises a crowbar body 1, one end of the crowbar body 1 is movably connected with a handle 2, one end of the crowbar body 1, which is close to the handle 2, is respectively provided with a threaded hole 3, a guide hole 4 and an air hole 5, the threaded hole 3 is positioned at the axis position of the crowbar body 1, the guide hole 4 is matched with a guide rod 7 for use, so that the crowbar body 1 and the handle 2 can not rotate relatively, a plurality of guide holes 4 are distributed around the threaded hole 3, the interior of the crowbar body 1 is provided with a channel 6, the channel 6 is communicated with the threaded hole 3, the air hole 5 and the guide hole 4, the inner wall of the guide hole 4 is movably connected with the surface of the guide rod 7, the guide rod 7 is fixedly connected with one end of the handle 2, the surface of the guide rod 7 is positioned at the radial direction of the crowbar body 1 and is provided with, the inner wall of spout 9 and the surperficial swing joint of strengthening rib 8, the inside threaded connection of screw hole 3 has screw rod 10, the thread thickness of screw rod 10 can be adjusted according to crow bar body 1's size and material, thick tooth regulation length ratio is faster, thin tooth regulation length ratio is slower, the one end of screw rod 10 run through the inside through-hole of seting up of handle 2 and with the one end swing joint of handle 11, screw rod 10 is through round pin axle and 11 swing joint of handle, be provided with stop gear 12 between screw rod 10 and the handle 2.
A plurality of guiding hole 4 uses the center of screw hole 3 to be annular array distribution as the array center, and the quantity of guide bar 7 can be confirmed according to the diameter of crow bar body 1, and evenly distributed can realize that the atress is comparatively even.
The passage 6 is located at the left end of the guide hole 4, the screw hole 3 and the air hole 5, and is used for balancing air pressure inside the guide hole 4 and the screw hole 3.
The sum of the vertical sectional areas of the guide hole 4, the threaded hole 3 and the air hole 5 is equal to half of the area of the right end of the crowbar body 1, so that the volume and the strength of the part pulled out of the crowbar body 1 are similar to those of the rest part of the crowbar body 1.
The limiting mechanism 12 comprises a limiting groove 1201 and a limiting disc 1202, the inner wall of the limiting groove 1201 is movably connected with the surface of the limiting disc 1202, the limiting disc 1202 is fixedly sleeved on the surface of the screw 10, the limiting groove 1201 is arranged at two ends of the handle 2, and the handle 2 is clamped by the two limiting discs 1202, so that the handle 2 and the screw 10 can rotate relatively but cannot be separated.
When using, 11 ninety degrees around round pin axle bending handle, hold handle 2 and rotate handle 11, handle 11 drives screw rod 10 and rotates, under screw hole 3's effect, screw rod 10 promotes crow bar body 1 and makes it keep away from each other with handle 2, guide bar 7 is along the outside motion of guiding hole 4 to crow bar body 1, the inside that the air reachs guiding hole 4 and screw hole 3 through gas pocket 5 and passageway 6, realize the increase in length of crow bar body 1, counter-rotation handle 11, screw rod 10 is to screw hole 3 internal screw in, the length of crow bar body 1 reduces.
To sum up, the utility model discloses a set up gas pocket 5, passageway 6, guide bar 7, screw rod 10 and handle 11, it is fixed to have solved present common crow bar length, can not adjust length and lead to awkward problem.
Although the present invention discloses the embodiments and the accompanying drawings, those skilled in the art can understand that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims, and therefore, the scope of the present invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (5)
1. The utility model provides an explosion-proof crow bar with adjustable length, includes crow bar body (1), its characterized in that: one end swing joint of crow bar body (1) has handle (2), the one end that crow bar body (1) is close to handle (2) is provided with screw hole (3), guiding hole (4) and gas pocket (5) respectively, screw hole (3) are located the axis position department of crow bar body (1), a plurality of guiding hole (4) distribute around screw hole (3), the inside of crow bar body (1) is provided with passageway (6), passageway (6) are linked together with screw hole (3), gas pocket (5) and guiding hole (4), the inner wall of guiding hole (4) and the surperficial swing joint of guide bar (7), guide bar (7) fixed connection is in the one end of handle (2), the surface of guide bar (7) is located crow bar body (1) and radially is provided with strengthening rib (8), the inside of guiding hole (4) corresponds the position department of strengthening rib (8) and is provided with spout (9), the inner wall of spout (9) and the surperficial swing joint of strengthening rib (8), the inside threaded connection of screw hole (3) has screw rod (10), the one end of screw rod (10) run through the inside through-hole of seting up of handle (2) and with the one end swing joint of handle (11), be provided with stop gear (12) between screw rod (10) and handle (2).
2. An explosion-proof crow bar with adjustable length of claim 1, characterized in that: the guide holes (4) are distributed in an annular array by taking the center of the threaded hole (3) as an array center.
3. An explosion-proof crow bar with adjustable length of claim 1, characterized in that: the channel (6) is positioned at the left ends of the guide hole (4), the threaded hole (3) and the air hole (5).
4. An explosion-proof crow bar with adjustable length of claim 1, characterized in that: the sum of the vertical cross-sectional areas of the guide hole (4), the threaded hole (3) and the air hole (5) is equal to half of the area of the right end of the crow bar body (1).
5. An explosion-proof crow bar with adjustable length of claim 1, characterized in that: the limiting mechanism (12) comprises a limiting groove (1201) and a limiting disc (1202), the inner wall of the limiting groove (1201) is movably connected with the surface of the limiting disc (1202), the limiting disc (1202) is fixedly sleeved on the surface of the screw rod (10), and the limiting groove (1201) is arranged at two ends of the handle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920492980.XU CN209872297U (en) | 2019-04-12 | 2019-04-12 | Length-adjustable explosion-proof crow bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920492980.XU CN209872297U (en) | 2019-04-12 | 2019-04-12 | Length-adjustable explosion-proof crow bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209872297U true CN209872297U (en) | 2019-12-31 |
Family
ID=68959690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920492980.XU Expired - Fee Related CN209872297U (en) | 2019-04-12 | 2019-04-12 | Length-adjustable explosion-proof crow bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209872297U (en) |
-
2019
- 2019-04-12 CN CN201920492980.XU patent/CN209872297U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |