CN219865706U - Upright post oil cylinder - Google Patents

Abstract

The utility model relates to the technical field of coal mine tunnel drilling rigs, in particular to a stand column oil cylinder which comprises a hollow cylindrical cylinder body, a cylinder bottom arranged at the bottom end of the cylinder body, a cylinder cover arranged at the top end of the cylinder body, a piston slidably arranged in the cylinder body, a piston rod arranged at the top end of the piston, a piston rod extending out of the cylinder body through the cylinder cover, an anti-deflection mechanism and a plurality of locking mechanisms, wherein the anti-deflection mechanism comprises a mounting ring arranged at the top end of the piston rod, a guide ring arranged at the top end of the cylinder body and guide rods uniformly arranged on the mounting ring along the circumferential direction, a plurality of guide holes are formed in the guide ring, the guide rods penetrate through the guide holes and are slidably matched with the guide holes, and the locking mechanisms are arranged in the guide ring and are used for clamping and locking the guide rods; the utility model provides a stand column oil cylinder which is simple in structural design and has an anti-deflection function and a mechanical locking function.

Description

Upright post oil cylinder

Technical Field

The utility model relates to the technical field of coal mine tunnel drilling rigs, in particular to a stand column oil cylinder.

Background

The coal mine tunnel drilling machine is mainly used for various aspects such as water detection, gas drainage, roof caving, water injection, deep geological exploration and the like, and is one of the indispensable equipment for safe production in a coal mine. In the process of drilling a coal mine tunnel drilling machine, two upright post oil cylinders on the drilling machine can support the top of the tunnel.

At present, most upright post oil cylinders are not provided with a guide mechanism, so that the piston rod is easy to be pressed and offset in the telescopic process, and the piston rod is broken under severe conditions, so that the service effect and the service life of the upright post oil cylinders are affected. In addition, the locking of stroke of the piston rod after the piston rod stretches out and draws back in place is mainly realized through the mode of shutoff hydraulic oil, and the locking effect is unstable because of revealing of hydraulic oil is easy to this kind of locking mode to can influence the result of use of stand hydro-cylinder equally.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects in the prior art, and provides the upright post oil cylinder with simple structural design, anti-deflection function and mechanical locking function.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a stand hydro-cylinder, includes cavity tube-shape cylinder body, installs at the cylinder bottom of cylinder body bottom, installs at the cylinder cap on cylinder body top, slidable mounting in the cylinder body and installs the piston rod at the piston top, the top of piston rod passes the cylinder cap and extends outside the cylinder body, piston rod and cylinder cap sliding fit still include anti-migration mechanism and a plurality of locking mechanism, anti-migration mechanism is including installing the collar on piston rod top, installing the guide ring on cylinder body top and evenly install the guide bar at the collar along circumference, a plurality of guiding holes have been seted up on the guide ring, the guide bar passes the guiding hole, and with guiding hole sliding fit, locking mechanism sets up in the guide ring for the centre gripping locking of guide bar.

Further, the locking mechanism comprises a plurality of clamping assemblies and a driving assembly for synchronously driving the clamping assemblies to move towards the direction of the guide rod, wherein the clamping assemblies are uniformly arranged along the circumferential direction of the guide rod and are arranged in clamping cavities arranged in the guide ring, and the clamping cavities are communicated with the guide holes.

Further, the clamping assembly comprises a gear, a rack, a first wedge, a second wedge and a clamping block, the gear is rotatably arranged in the clamping cavity, the first wedge and the second wedge are slidably arranged in the clamping cavity, the relative inclined planes of the first wedge and the second wedge are slidably connected, the rack is arranged at the end part of the first wedge, which is far away from the second wedge, and is meshed with the gear, and the clamping block is arranged at the end part of the second wedge, which is far away from the first wedge.

Further, a plurality of annular grooves are uniformly distributed on the guide rod along the axial direction, and the annular grooves are matched with the clamping blocks.

Further, the drive assembly includes ring gear, pivot, torsional spring, twist lid and limit group, the ring gear sets up the ring gear intracavity of establishing in the direction intra-annular, and its inner circle meshes with the gear mutually, the ring gear chamber is linked together with the centre gripping chamber, the pivot rotates and installs in the through-hole of seting up on the direction ring, the through-hole is linked together with the centre gripping chamber, the bottom of pivot extends to the centre gripping intracavity, and is connected with one of them gear, the top of pivot is outwards stretched out the through-hole and is connected with the twist lid, the torsional spring cover is established in the pivot, and installs the top at the through-hole, limit group installs the top surface at the direction ring for the rotation of restriction pivot.

Further, spacing group includes two mounting panels, inserted bar, spring and pull ring, mounting panel spaced installs the top surface at the guide ring, the inserted bar slides and passes two mounting panels, the middle part of inserted bar is formed with annular bead, annular bead is located between two mounting panels, the inserted bar is located to the spring housing, the one end butt of spring is in annular bead, and the other end butt is in the mounting panel of keeping away from the pivot, a plurality of jacks are evenly seted up along circumference on the top of pivot, the inserted bar is close to the tip of pivot and inserts the jack, and the tip of keeping away from the pivot is connected with the pull ring.

Further, an annular cleaning block is arranged on the cylinder cover, an annular cleaning brush is embedded in the inner ring of the cleaning block, and the cleaning brush is in contact with the piston rod.

The beneficial effects of the utility model are as follows:

(1) According to the utility model, the anti-deviation mechanism and the locking mechanism are arranged to guide the extension and retraction of the piston rod, and realize mechanical locking after the extension and retraction of the piston rod are in place, so that the situation that the piston rod is pressed and deviated in the extension and retraction process is prevented, the locking effect is improved, and the use effect and the service life of the stand column oil cylinder are improved;

(2) According to the utility model, through the arrangement of the cleaning brush, coal cinder, dust or dust attached to the exposed part of the piston rod is cleaned, so that abrasion caused by overlarge friction force of the piston rod in the telescoping process is avoided, and the service life of the upright post oil cylinder is further ensured.

Drawings

The utility model will be further described with reference to the drawings and embodiments.

FIG. 1 is a cross-sectional view of the present utility model;

fig. 2 is an enlarged view of a portion a in fig. 1;

fig. 3 is an enlarged view of a portion B in fig. 2;

fig. 4 is an enlarged view of a portion C in fig. 2;

fig. 5 is a schematic view of a clamping assembly of the present utility model.

In the figure: 1. a cylinder; 2. a cylinder bottom; 3. a cylinder cover; 4. a piston; 5. a piston rod; 6. an anti-offset mechanism; 6a, a mounting ring; 6b, a guide ring; 6c, a guide rod; 7. a locking mechanism; 7a, clamping components; 7a1, gears; 7a2, a rack; 7a3, a first wedge; 7a4, a second wedge; 7a5, clamping blocks; 7b, a driving assembly; 7b1, a ring gear; 7b2, a rotating shaft; 7b3, torsion springs; 7b4, twisting the cover; 7b5, a limiting group; 7b51, mounting plate; 7b52, a plunger; 7b53, springs; 7b54, pull ring; 8. a guide hole; 9. a clamping cavity; 10. an annular groove; 11. a gear ring cavity; 12. a through hole; 13. annular rib; 14. a jack; 15. cleaning the block; 16. and (5) cleaning the brush.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic views illustrating the basic structure of the present utility model by way of illustration only, and thus show only the constitution related to the present utility model.

Example 1

As shown in fig. 1, the upright cylinder comprises a hollow cylindrical cylinder body 1, a cylinder bottom 2 arranged at the bottom end of the cylinder body 1, a cylinder cover 3 arranged at the top end of the cylinder body 1, a piston 4 slidably arranged in the cylinder body 1 and a piston rod 5 arranged at the top end of the piston 4, wherein the top end of the piston rod 5 penetrates through the cylinder cover 3 to extend out of the cylinder body 1, the piston rod 5 is slidably matched with the cylinder cover 3, the upright cylinder further comprises an anti-deviation mechanism 6 and a plurality of locking mechanisms 7, the anti-deviation mechanism 6 comprises a mounting ring 6a arranged at the top end of the piston rod 5, a guide ring 6b arranged at the top end of the cylinder body 1 and guide rods 6c uniformly arranged on the mounting ring 6a along the circumferential direction, a plurality of guide holes 8 are formed in the guide ring 6b, the guide rods 6c penetrate through the guide holes 8 and are slidably matched with the guide holes 8, and the locking mechanisms 7 are arranged in the guide ring 6b and are used for clamping and locking the guide rods 6 c. The telescopic piston rod 5 is guided through the arrangement of the anti-deflection mechanism 6 and the locking mechanism 7, and mechanical locking of the piston rod 5 after the telescopic piston rod 5 is in place is realized, so that the situation that the piston rod 5 is deflected under pressure in the telescopic process is prevented, the locking effect is improved, and the use effect and the service life of the stand column oil cylinder are improved. Specifically, the guide bars 6c may be two, three or four.

As shown in fig. 1 and 2, the locking mechanism 7 comprises a plurality of clamping assemblies 7a and a driving assembly 7b for synchronously driving the clamping assemblies 7a to move towards the guide rod 6c, wherein the clamping assemblies 7a are uniformly arranged along the circumferential direction of the guide rod 6c and are arranged in a clamping cavity 9 arranged in the guide ring 6b, and the clamping cavity 9 is communicated with the guide hole 8. Through the setting of drive assembly 7b, can make a plurality of clamping assemblies 7a carry out the centre gripping to guide bar 6c simultaneously, when guaranteeing the centre gripping effect, convenient operation. In particular, the clamping assemblies 7a may be two or three groups.

As shown in fig. 2 and 5, the clamping assembly 7a includes a gear 7a1, a rack 7a2, a first wedge 7a3, a second wedge 7a4 and a clamping block 7a5, the gear 7a1 is rotatably mounted in the clamping cavity 9, the first wedge 7a3 and the second wedge 7a4 are slidably mounted in the clamping cavity 9, the opposite inclined surfaces of the first wedge 7a3 and the second wedge 7a4 are slidably connected, the rack 7a2 is mounted at the end of the first wedge 7a3 far from the second wedge 7a4 and is meshed with the gear 7a1, and the clamping block 7a5 is mounted at the end of the second wedge 7a4 far from the first wedge 7a 3. Specifically, the first wedge block 7a3 and the second wedge block 7a4 are slidably mounted in the clamping cavity 9 through slide rail sliding blocks, the sliding direction of the second wedge block 7a4 is along the radial direction of the guide hole 8, and the sliding direction of the first wedge block 7a3 is perpendicular to the sliding direction of the second wedge block 7a 4; the opposite inclined surfaces of the first wedge block 7a3 and the second wedge block 7a4 can also realize sliding connection through a sliding rail slide block, but can also realize sliding connection through other modes; the clamp block 7a5 is arc-shaped. During clamping, the gear 7a1 is rotated, the gear 7a1 drives the first wedge block 7a3 to move through the rack 7a2, and the inclined surface of the second wedge block 7a4 is pushed by the movement of the first wedge block 7a3, so that the second wedge block 7a4 is forced to radially slide towards the direction of the guide hole 8 until the clamping block 7a5 is abutted against the guide rod 6 c. When clamping is not needed, the gear 7a1 is reversely rotated, the gear 7a1 drives the first wedge block 7a3 to reversely move through the rack 7a2, the inclined surface of the second wedge block 7a4 is pulled by the inclined surface of the first wedge block 7a3, and then the second wedge block 7a4 is forced to radially slide in the direction away from the guide hole 8, and the clamping block 7a5 is retracted into the clamping cavity 9 and is not in interference with the guide rod 6 c.

As shown in fig. 2, in order to improve the clamping effect of the clamping block 7a5 on the guide rod 6c, a plurality of annular grooves 10 are uniformly distributed on the guide rod 6c along the axial direction, and the annular grooves 10 are matched with the clamping block 7a 5. The annular groove 10 is arranged along the axial direction of the guide rod 6c, so that mechanical locking of different strokes of the piston rod 5 can be realized.

As shown in fig. 2 and 3, the driving assembly 7b includes a gear ring 7b1, a rotating shaft 7b2, a torsion spring 7b3, a torsion cover 7b4 and a limit group 7b5, the gear ring 7b1 is disposed in a gear ring cavity 11 provided in the guide ring 6b, and the inner ring thereof is meshed with the gear 7a1, the gear ring cavity 11 is communicated with the clamping cavity 9, the rotating shaft 7b2 is rotatably mounted in a through hole 12 provided on the guide ring 6b, the through hole 12 is communicated with the clamping cavity 9, the bottom end of the rotating shaft 7b2 extends into the clamping cavity 9 and is connected with one of the gears 7a1, the top end of the rotating shaft 7b2 extends out of the through hole 12 and is connected with the torsion cover 7b4, the torsion spring 7b3 is sleeved on the rotating shaft 7b2 and is mounted at the top end of the through hole 12, and the limit group 7b5 is mounted on the top surface of the guide ring 6b for limiting the rotation of the rotating shaft 7b 2. Specifically, the rotating shaft 7b2 is mounted in the through hole 12 by a bearing, and its bottom end is connected to the outermost gear 7a1 in the guide ring 6 b. During clamping, the rotating shaft 7b2 drives the gear 7a1 connected with the rotating shaft to rotate, the rotation of the gear 7a1 enables the corresponding clamping blocks 7a5 to radially slide towards the direction of the guide holes 8, the rotation of the gear 7a1 simultaneously drives the gear ring 7b1 to rotate, and then the rest gears 7a1 are synchronously driven to rotate, so that the corresponding clamping blocks 7a5 simultaneously enable the clamping blocks 7a5 to radially slide towards the direction of the guide holes 8 until all the clamping blocks 7a5 are in contact with the guide rods 6 c.

As shown in fig. 2 and 4, the limiting group 7b5 includes two mounting plates 7b51, an inserting rod 7b52, a spring 7b53 and a pull ring 7b54, the mounting plates 7b51 are mounted on the top surface of the guide ring 6b at intervals, the inserting rod 7b52 slides through the two mounting plates 7b51, an annular convex rib 13 is formed in the middle of the inserting rod 7b52, the annular convex rib 13 is located between the two mounting plates 7b51, the spring 7b53 is sleeved on the inserting rod 7b52, one end of the spring 7b53 is abutted to the annular convex rib 13, the other end is abutted to the mounting plate 7b51 far away from the rotating shaft 7b2, a plurality of insertion holes 14 are uniformly formed in the top end of the rotating shaft 7b2 along the circumferential direction, the end, close to the rotating shaft 7b2, of the inserting rod 7b52 is inserted into the insertion holes 14, and the end far away from the rotating shaft 7b2 is connected with the pull ring 7b 54. Through the setting of limit group 7b5, carry out spacingly to the rotation of pivot 7b2 for need carry out the centre gripping lock to guide bar 6c and just loosen pivot 7b2, in order to avoid influencing the flexible of piston rod 5. In the initial state, the end of the insert rod 7b52 near the rotating shaft 7b2 is inserted into the insertion hole 14, and the clamping block 7a5 is positioned in the clamping cavity 9 and is not in contact with the guide rod 6 c. When the guide rod 6c needs to be clamped and locked, the pull ring 7b54 is pulled, the pull ring 7b54 drives the end part of the insert rod 7b52, which is close to the rotating shaft 7b2, to withdraw from the jack 14, the rotating shaft 7b2 rotates and resets under the action of the torsion spring 7b3, so that all clamping blocks 7a5 are in contact with the guide rod 6c, then the pull ring 7b54 is released, the insert rod 7b52 moves and resets under the action of the spring 7b53, and the end part of the insert rod 7b52, which is close to the rotating shaft 7b2, is inserted into the jack 14 again, so that limiting is realized.

During the expansion and contraction process of the piston rod 5, mechanical locking is not needed, at the moment, the pull ring 7b54 is pulled to enable the end part of the inserting rod 7b52, which is close to the rotating shaft 7b2, to withdraw from the jack 14, then the torsion cover 7b4 is twisted, the torsion cover 7b4 drives the gear 7a1 to rotate through the rotating shaft 7b2, the clamping block 7a5 is retracted into the clamping cavity 9 and does not contact with the guide rod 6c, then the pull ring 7b54 is released, the inserting rod 7b52 moves and resets under the action of the spring 7b53, and the end part of the inserting rod 7b52, which is close to the rotating shaft 7b2, is inserted into the jack 14 again to achieve limiting. When the piston rod 5 stretches out and draws back to the right place, pulling pull ring 7b54 makes the end that inserted link 7b52 is close to pivot 7b2 withdraw from jack 14, pivot 7b2 rotates the reset under the effect of torsional spring 7b3 to make all clamp splice 7a5 and guide bar 6c conflict, realize mechanical locking.

Example 2

The cleaning function is added on the basis of the embodiment 1, as shown in fig. 1, and the specific structure is as follows: an annular cleaning block 15 is arranged on the cylinder cover 3, an annular cleaning brush 16 is embedded in the inner ring of the cleaning block 15, and the cleaning brush 16 is in contact with the piston rod 5. Through the setting of cleaning brush 16, clear up the attached cinder of the part that exposes on the piston rod 5, dust or dust, and then avoided piston rod 5 to produce the wearing and tearing because of frictional force is too big in flexible in-process to further guaranteed the life of stand hydro-cylinder.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (7)

1. The utility model provides a stand hydro-cylinder, includes cavity tube-shape cylinder body (1), installs at cylinder bottom (2) of cylinder body (1) bottom, installs cylinder cap (3) on cylinder body (1) top, slidable mounting piston (4) in cylinder body (1) and install piston rod (5) on piston (4) top, the top of piston rod (5) passes cylinder cap (3) and extends to outside cylinder body (1), piston rod (5) and cylinder cap (3) sliding fit, its characterized in that: still include anti-migration mechanism (6) and a plurality of locking mechanical system (7), anti-migration mechanism (6) are including installing collar (6 a) on piston rod (5) top, install guide ring (6 b) on cylinder body (1) top and evenly install guide bar (6 c) at collar (6 a) along circumference, a plurality of guiding holes (8) have been seted up on guide ring (6 b), guide bar (6 c) pass guiding hole (8), and with guiding hole (8) sliding fit, locking mechanical system (7) set up in guide ring (6 b) for the centre gripping locking of guide bar (6 c).

2. The column cylinder according to claim 1, wherein: the locking mechanism (7) comprises a plurality of clamping assemblies (7 a) and a driving assembly (7 b) for synchronously driving the clamping assemblies (7 a) to move towards the guide rod (6 c), wherein the clamping assemblies (7 a) are uniformly arranged along the circumferential direction of the guide rod (6 c) and are arranged in a clamping cavity (9) arranged in the guide ring (6 b), and the clamping cavity (9) is communicated with the guide hole (8).

3. The column cylinder according to claim 2, wherein: the clamping assembly (7 a) comprises a gear (7 a 1), a rack (7 a 2), a first wedge block (7 a 3), a second wedge block (7 a 4) and a clamping block (7 a 5), wherein the gear (7 a 1) is rotatably installed in a clamping cavity (9), the first wedge block (7 a 3) and the second wedge block (7 a 4) are slidably installed in the clamping cavity (9), the first wedge block (7 a 3) and the second wedge block (7 a 4) are in sliding connection with opposite inclined planes, the rack (7 a 2) is installed at the end part of the first wedge block (7 a 3) far away from the second wedge block (7 a 4), and is meshed with the gear (7 a 1), and the clamping block (7 a 5) is installed at the end part of the second wedge block (7 a 4) far away from the first wedge block (7 a 3).

4. A column ram according to claim 3, wherein: a plurality of annular grooves (10) are uniformly distributed on the guide rod (6 c) along the axial direction, and the annular grooves (10) are matched with the clamping blocks (7 a 5).

5. The column cylinder according to claim 3 or 4, characterized in that: the driving assembly (7 b) comprises a gear ring (7 b 1), a rotating shaft (7 b 2), a torsion spring (7 b 3), a torsion cover (7 b 4) and a limiting group (7 b 5), wherein the gear ring (7 b 1) is arranged in a gear ring cavity (11) arranged in a guide ring (6 b), an inner ring of the gear ring is meshed with the gear (7 a 1), the gear ring cavity (11) is communicated with a clamping cavity (9), the rotating shaft (7 b 2) is rotationally arranged in a through hole (12) formed in the guide ring (6 b), the through hole (12) is communicated with the clamping cavity (9), the bottom end of the rotating shaft (7 b 2) extends into the clamping cavity (9) and is connected with one gear (7 a 1), the top end of the rotating shaft (7 b 2) extends out of the through hole (12) to be connected with the torsion cover (7 b 4), the torsion spring (7 b 3) is sleeved on the rotating shaft (7 b 2) and is arranged at the top end of the through hole (12), and the limiting group (7 b 5) is arranged on the top surface of the guide ring (6 b) for limiting the rotating shaft (7 b).

6. The column cylinder according to claim 5, wherein: limiting group (7 b 5) are including two mounting panels (7 b 51), inserted bar (7 b 52), spring (7 b 53) and pull ring (7 b 54), the top surface at guide ring (6 b) is installed to mounting panel (7 b 51) spaced, inserted bar (7 b 52) slip passes two mounting panels (7 b 51), the middle part of inserted bar (7 b 52) is formed with annular bead (13), annular bead (13) are located between two mounting panels (7 b 51), inserted bar (7 b 52) are located to spring (7 b 53) cover, one end butt in annular bead (13) of spring (7 b 53), other end butt in mounting panel (7 b 51) of keeping away from pivot (7 b 2), a plurality of jacks (14) are evenly seted up along circumference on the top of pivot (7 b 2), the tip that inserted bar (7 b 52) is close to pivot (7 b 2) inserts jack (14), and the tip and pull ring (7 b 54) of keeping away from pivot (7 b 2) are connected.

7. The column cylinder according to claim 1, wherein: an annular cleaning block (15) is arranged on the cylinder cover (3), an annular cleaning brush (16) is embedded in the inner ring of the cleaning block (15), and the cleaning brush (16) is in contact with the piston rod (5).