CN212296221U

CN212296221U - Pushing device and lifting appliance

Info

Publication number: CN212296221U
Application number: CN202021959872.8U
Authority: CN
Inventors: 凌杰
Original assignee: Chengdu Lieshizhe Rock Breaking Technology Co ltd
Current assignee: Chengdu stone Hunter Rock Breaking Technology Co., Ltd; Sichuan stone Hunter Longyu Technology Co.,Ltd.
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-01-05
Anticipated expiration: 2030-09-09

Abstract

The utility model provides a thrustor and hoist belongs to the rock stratum and breaks the equipment field. The pushing device comprises a first pushing piece and a second pushing piece which push the oil cylinder, and the upper end of the first pushing piece is movably connected with the upper end of the second pushing piece. The pushing oil cylinder comprises a cylinder base and a cylinder head, and the cylinder head is connected with the cylinder base in a sliding manner; the pushing oil cylinder is arranged between the first pushing piece and the second pushing piece, and one end of the pushing oil cylinder is connected with the second pushing piece. When the pushing device is used, the lower part of the pushing device is placed into a rock stratum slot; and then introducing pressure oil into the jacking oil cylinder to extend the jacking oil cylinder, so that the rock stratum is cracked by thrust. In the construction process, the pushing oil cylinder is positioned below the first pushing piece and the second pushing piece and in a gap formed between the first pushing piece and the second pushing piece; when the rubble dropped, two pushing pieces cover the top of the pushing oil cylinder, which can effectively prevent the dropped rubble from directly dropping on the cylinder head. Therefore, the design of the rock stratum pushing device can reduce the damage of broken stones to the cylinder head and effectively prolong the service life of the pushing oil cylinder; thereby improving the rock breaking efficiency.

Description

Pushing device and lifting appliance

Technical Field

The utility model relates to a rock stratum abolishes the field, particularly, relates to a thrustor and hoist.

Background

In rock stratum breaking operation aiming at high hardness, mechanical breaking except blasting is more and more widely adopted due to high safety; in the prior art, mechanical breaking mainly comprises breaking hammer breaking and stone breaker breaking, and the breaking hammer breaks rocks or rock stratums through impact, so that the mechanical breaking is convenient to use, but the efficiency is poor.

The stone cracking device is a cylindrical cracking device, a cylinder is provided with a high-pressure oil cavity, a plurality of pushing pistons are arranged along the cylinder, and the pistons are pushed by hydraulic oil to push the rock, so that the rock is cracked; the construction method comprises the following steps: the rock fracturing device has the advantages that the rock is drilled, the fracturing device is placed into the hole to fracture, the integrity of the rock is good, the single rock with the large volume has a good fracturing effect, and due to the structural characteristics of the rock fracturing device, the jacking force and the stroke of the piston are small, and the efficiency of rock strata formed by tightly combining a plurality of rocks is poor.

The later grooving pushing mode has higher efficiency for a rock stratum consisting of a plurality of rocks, and the mode provides a larger contact surface and a larger stroke space for the pushing device by placing the pushing device into the groove for pushing after grooving, so that the efficiency can be obviously improved. However, if a general oil cylinder having a cylinder base and a cylinder head is used for pushing, the cylinder head is easily damaged by loose rocks when extending.

The jacking device of patent No. CN208098178U is characterized in that a plurality of pistons are arranged on a jacking seat, one ends of the pistons stretch relative to the jacking seat, the other ends of the pistons are fixed on a steel plate at the same time, so that jacking forces of the pistons can be transmitted to a rock stratum at the same time through the steel plate, and the jacking stroke is limited by the stroke of the pistons and is smaller; when the hardness distribution of the rock stratum structure is not balanced, the steel plate is easy to deform, so that the pushing device is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rock stratum thrustor, it is through pushing away the setting of top hydro-cylinder between two top pushing pieces to can effectively reduce the damage of loose rock to the cylinder head. Through different connection modes of the first pushing oil cylinder and the second pushing oil cylinder and the first pushing piece and the second pushing piece, a pushing stroke larger than the strokes of the first pushing oil cylinder and the second pushing oil cylinder is arranged below the pushing device, and the second pushing piece is not easy to deform.

Another object of the present invention is to provide a lifting device, which employs the above pushing device.

The utility model discloses a realize like this:

a formation jacking device comprising:

the upper end of the first pushing piece is movably connected with the upper end of the second pushing piece;

the pushing oil cylinder comprises a cylinder base and a cylinder head, and the cylinder head is connected with the cylinder base in a sliding manner; the pushing oil cylinder is arranged between the first pushing piece and the second pushing piece, and one end of the pushing oil cylinder is connected with the second pushing piece.

Optionally; the cylinder base is hinged with one of the first pushing piece and the second pushing piece, and the cylinder head can be abutted against or separated from the other of the first pushing piece and the second pushing piece.

Optionally; the rock stratum pushing device comprises at least two pushing oil cylinders, and the at least two pushing oil cylinders comprise a first pushing oil cylinder and a second pushing oil cylinder;

one end of the first pushing oil cylinder is hinged with the second pushing piece, and the other end of the first pushing oil cylinder is hinged with the first pushing piece;

one end of the second pushing oil cylinder is hinged with the second pushing piece, and the other end of the second pushing oil cylinder can be abutted to or separated from the first pushing piece.

Optionally; at least two pushing oil cylinders are arranged up and down,

one end of the second pushing oil cylinder, which is close to the second pushing piece, is fixedly connected with a hinge shaft, and the second pushing oil cylinder is hinged with the second pushing piece through the hinge shaft; the end part of the hinge shaft is provided with a shaft end limiting part, and the second pushing piece is provided with a fixed limiting part;

when the free end of the second pushing oil cylinder swings downwards, the shaft end limiting part can be abutted with the fixed limiting part, so that the swing angle of the second pushing oil cylinder is limited.

Optionally; the shaft end limiting part is of a strip-shaped structure;

the first pushing piece is provided with a limiting guide part, the limiting guide part comprises a guide surface, and the guide surface is an inclined surface; when the second pushing piece swings relative to the first pushing piece, the free end of the shaft end limiting part can slide along the guide surface.

Optionally; the limiting guide part is provided with a guide groove which is an expanding groove; the lower groove surface of the guide groove forms the guide surface.

Optionally; the first pushing oil cylinder is positioned above the second pushing oil cylinder.

Optionally; a limit groove is formed in the fixed limit part, and groove walls on two sides of the limit groove extend along the radial direction of the hinge shaft; the shaft end limiting part is of a strip-shaped structure and extends along the radial direction of the hinge shaft, and the groove wall of the limiting groove can limit the rotation angle of the shaft end limiting part.

Optionally; the end part of the cylinder head of the lower pushing oil cylinder is provided with a rolling body, and the lower pushing oil cylinder can be abutted against the first pushing piece through the rolling body.

Optionally; the first pushing piece is of a strip-shaped box structure and comprises an accommodating cavity, and the second pushing piece is of a strip-shaped plate structure; the second ejector can be embedded into the accommodating cavity.

Optionally; baffle assemblies are arranged on two sides of the second pushing piece, and the pushing oil cylinder is arranged between the two baffle assemblies.

Optionally; the first pushing piece is connected with the second pushing piece through a sliding block, the sliding block is in sliding fit with the first pushing piece, and the second pushing piece is hinged with the sliding block;

when the sliding block slides relative to the first pushing piece, the first pushing piece and the second pushing piece can be close to or far away from each other.

The lifting appliance is carried on an excavator and comprises a lifting arm, wherein one end of the lifting arm is connected with the excavator, and the other end of the lifting arm is connected with the rock stratum pushing device.

Optionally; the excavator lifting device is characterized by further comprising a winch and a lifting support, wherein one end of the lifting arm is directly or indirectly hinged with the excavator, and the other end of the lifting arm is connected with the lifting support; the lifting support is connected with a winch, and the winch is connected with the pushing device; the lifting bracket can rotate transversely.

The utility model provides a technical scheme's beneficial effect is:

when the pushing device and the lifting appliance which are obtained by the design are used, the lower part of the pushing device is placed in the rock stratum open groove; and then introducing pressure oil into the jacking oil cylinder to extend the jacking oil cylinder, so that the rock stratum is cracked by thrust. In the construction process, the pushing oil cylinder is positioned below the first pushing piece and the second pushing piece and in a gap formed between the first pushing piece and the second pushing piece; when the rubble dropped, two pushing pieces cover the top of the pushing oil cylinder, which can effectively prevent the dropped rubble from directly dropping on the cylinder head. The first pushing oil cylinder is positioned above the second pushing oil cylinder, the second oil cylinder can be contacted with or separated from the first pushing piece and the second pushing piece, and the pushing stroke below the pushing device is larger than the strokes of the first pushing oil cylinder and the second pushing oil cylinder according to the lever principle analysis; because the second oil cylinder can be separated from the first pushing piece or the second pushing piece in the extending process of the first oil cylinder, the second pushing piece is not easy to deform. Therefore, the design of the rock stratum pushing device can reduce the damage of broken stones to the cylinder head and effectively prolong the service life of the pushing oil cylinder; thereby improving the rock breaking efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of an overall structure of a thruster mounted on a vehicle body of an excavator according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a pushing device mounted on a excavator body according to an embodiment of the present invention;

fig. 3 is a perspective view of a pushing device provided in an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a pushing assembly provided by an embodiment of the present invention;

FIG. 5 is a schematic structural view of the pushing assembly according to the embodiment of the present invention with the side dam assembly removed;

fig. 6 is a schematic structural view of a second pushing member according to an embodiment of the present invention;

fig. 7 is an exploded view of a second pushing member according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a first pushing member and a second pushing member according to an embodiment of the present invention;

fig. 9 is a schematic view of a lifting support structure provided by the embodiment of the present invention.

Icon: 1-a pushing device; 111-a first pusher; 112-a second ejector; 12-a pushing oil cylinder; 121-cylinder seat; 122-cylinder head; 1110-a slider; 201-a first hinge; 202-a second hinge; 203-a third hinge; 204-a fourth hinge; 205-a fifth hinge; 206-a sixth hinge; 207-seventh hinge; 208-an eighth hinge; 209-ninth hinge; 2010-tenth hinge; 2011-eleventh hinge; 2012-twelfth hinge; 301-a first support; 302-a second stent; 303-a third support; 304-a rack rotator; 3041-rotating the cylinder; 3042-a first rotating link; 3043-a second rotating link; 31-a trench; 401-upper vehicle body; 402-lower vehicle body; 403-a walking device; 114-a lifting lug; 117-a first baffle; 118-a second baffle; 119-slag discharge holes; 1101-shaft end limiting part; 11011-shaft end limit upper part; 11012-shaft end limit lower part; 1102-a fixed limit part; 11021-fixing the upper part of the limit; 11022-fixing the lower part of the limit; 1103-limit guide part; 11031-limit guide upper part; 11032-limit guide lower part; 1104-a hinge stopper; 1105-a slide stop block; 1110-a slider; 5, mounting a bracket; 6-lifting arm; 8-supporting legs; 10-a winch.

Detailed Description

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected with each other or indirectly connected with each other through an intermediate medium, and can be communicated with each other inside the two elements or in the interaction relationship of the two elements

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Firstly, appointing the position relationship, referring to fig. 1, wherein the upper part, the lower part, the front part and the rear part are shown on the figure, a power machine is an excavator, the rotation direction of the excavator is transverse, and the front and rear directions are longitudinal; in the present application, the above-mentioned orientation terms are all referred to the normal use status of the pushing device.

In the case of a hinge, the term "hinge" refers to a connection location of two or more members, including a shaft and a hinge hole, and a bushing may be provided in the hinge hole, so that at least one member can rotate relative to the other member.

Example (b):

referring to fig. 1, 2 and 3, the present embodiment provides a rock stratum thruster 1, which is mounted on an excavator by a lifting tool; the excavator includes an upper body 401, a lower body 402, and a traveling device 403, the upper body 401 being rotatably connected to the lower body 402, and the traveling device 403 being provided at the bottom of the lower body 402. The excavator further comprises a control part, a power part and a hydraulic part, wherein the hydraulic part converts the power of the power part into high-pressure hydraulic oil through a hydraulic pump, the high-pressure hydraulic oil drives a walking motor to drive a walking device 403 to move, the high-pressure hydraulic oil drives a rotating motor to enable an upper vehicle body 401 to rotate relative to a lower vehicle body 402, and the high-pressure hydraulic oil can also drive an oil cylinder of the pushing device 1 and a lifting appliance oil cylinder to stretch and retract; the spreader and thruster 1 comprises hydraulic oil lines (not shown in the figures).

The thruster 1 may also be mounted on other power machines such as a loader, a bulldozer, and a crane, for example, when mounted on a crane, a special hydraulic station may separately provide high-pressure hydraulic oil, and the crane may complete the position movement of the thruster 1. For example, when the pushing device is mounted on a loader, high-pressure hydraulic oil is provided by the loader, and the lifting arm 6 of the loader is matched with the traveling device to complete the position movement of the pushing device 1. For example, when the pushing device is mounted on a bulldozer, a hanger may be provided on the bulldozer, the bulldozer supplies high-pressure hydraulic oil, and the hanger provided on the bulldozer completes displacement of the pusher 1 in cooperation with traveling.

With continued reference to fig. 1, the pushing device 1 can be located in the groove 31 to push the rock formation in the groove 31 to loosen the rock formation or crack the rock. Typically, the relatively poorly supported side of the trench 31 will be loose, as shown in fig. 1, and the formation toward the front will be less well supported and the formation in front will be more easily loosened.

Referring to fig. 3 and 4, the pushing apparatus 1 includes a first pushing member 111, a second pushing member 112 and a pushing cylinder 12, the first pushing member 111 and the second pushing member 112 are both of a strip structure, and upper ends of the first pushing member 111 and the second pushing member 112 are movably connected (for example, hinged or slidably connected), so that lower portions of the first pushing member 111 and the second pushing member 112 can be close to or far away from each other. The pushing cylinder 12 is disposed between the two pushing members, one end of the pushing cylinder 12 is hinged to the first pushing member 111, and the other end is hinged to or abutted against the second pushing member 112. When the jacking cylinder 12 extends, the lower parts of the first jacking piece 111 and the second jacking piece 112 can be far away from each other, so that jacking force is applied to the rock groove 31; and then breaks it.

In this embodiment, the first pushing member 111 is a rectangular box structure, and the second pushing member 112 is a bar-shaped block structure. The upper part of the first pushing member 111 and the upper part of the second pushing member 112 are hinged to the first hinge portion 201, a cavity with an opening is arranged on one side of the first pushing member 111 facing the second pushing member 112, and the second pushing member 112 can be located in the cavity. The end surface of the first pushing member 111 opposite to the opening is a contact surface with the rock formation, and the surface is a plane, so that a relatively larger pushing stroke and a pushing cylinder 12 with a larger diameter can be obtained more easily under the condition of the same volume in the pushing direction compared with contact surfaces with other shapes. In other embodiments, the first pushing member 111 may also be a bar-shaped block structure, and the second pushing member 112 may be a rectangular parallelepiped box structure; that is, the pusher 1 does not limit the specific structure of the first pusher 111 and the second pusher 112.

The pushing device 1 in this embodiment includes three pushing cylinders 12 arranged up and down, and for convenience of description, the upper pushing cylinder 12 is named as a first pushing cylinder, the middle pushing cylinder 12 is a second pushing cylinder, and the lower pushing cylinder 12 is a third pushing cylinder.

The pushing oil cylinder 12 adopts a multi-stage oil cylinder; the multi-stage oil cylinder is a more common oil cylinder, and can obtain larger stroke in a relatively narrow space, thereby being beneficial to improving the pushing effect.

Regarding the jacking cylinder 12, besides the multi-stage cylinder in the embodiment, in other embodiments, there may be no intermediate cylinder, i.e. an ordinary oil recovery cylinder; the stroke of the pushing oil cylinder 12 is relatively small, which is not beneficial to improving the pushing effect.

Referring to fig. 4-7, in the embodiment, the two sides of the cylinder seat 121 of the first pushing cylinder are symmetrically and integrally provided with a rotating shaft, the cylinder seat 121 of the first pushing cylinder is hinged to the second pushing member 112 through the rotating shaft, and the hinge limiting block 1104 limits the hinged position and is detachably connected to the first pushing member 111; the cylinder head 122 and the first pushing member 111 are hinged to a twelfth hinge part 2012, and the twelfth hinge part 2012 is located on a support facing the rear.

The second pushing cylinder located in the middle position and the third pushing cylinder located below have the same structure, and the connection structure between the two pushing cylinders and the second pushing member 112 is also the same. Therefore, the second jack cylinder will be described as an example. Hinge shafts are symmetrically and integrally arranged on two sides of a cylinder seat 121 of the second pushing oil cylinder, the cylinder seat 121 is hinged with the second pushing piece 112, a shaft end limiting part 1101 is arranged at the end part of each hinge shaft, and the shaft end limiting parts 1101 can synchronously rotate along with the rotation of the hinge shafts. A fixed limiting part 1102 is arranged on the second pushing part 112 near the hinge shaft, and the fixed limiting part 1102 is arranged on the hinge shaft and two sides of the cylinder seat 121 to limit the swing of the cylinder seat 121. The shaft end limiting part 1101 is in a cuboid block shape, the upper side of the shaft end limiting part 1101 is a shaft end limiting upper part 11011, and the lower side of the shaft end limiting part 1101 is a shaft end limiting lower part 11012. A limit groove is formed in the fixed limit part 1102, and groove walls on two sides of the limit groove extend in the radial direction of the hinge shaft; namely, the limiting groove is gradually enlarged from the transverse direction by taking the center of the hinge shaft as the center, the upper part of the limiting groove is a fixed limiting upper part 11021, and the lower part of the limiting groove is a fixed limiting lower part 11022. When the front end (the end far away from the first pushing piece 111) of the shaft end limiting part 1101 is abutted with the fixed limiting upper part 11021, the second pushing oil cylinder swings downwards to a limiting position; when the front end of the shaft end limiting part 1101 abuts against the fixed limiting lower part 11022, the second pushing cylinder swings upwards to a limiting position. If the rotation of the hinge shaft is not limited, when the first pushing piece 111 and the second pushing piece 112 are separated, the second pushing oil cylinder and the third pushing oil cylinder swing towards the vertical position under the action of self gravity; this directly makes the second top push hydro-cylinder and the third top push hydro-cylinder can't provide effectual thrust, influences thrustor 1's removal efficiency.

In other embodiments, the shaft end limiting portion 1101 and the fixed limiting portion 1102 may be provided in other configurations, such as a boss configuration; the rotation of the shaft end stopper 1101 is restricted to a position where it abuts against the fixed stopper 1102.

Referring to fig. 4, the bottom of the cavity of the first pushing member 111 is provided with a limiting guide portion 1103 at a position corresponding to the second pushing cylinder and the third pushing cylinder, respectively, the limiting guide portion 1103 includes a guide surface disposed obliquely, and a front end (an end close to the second pushing member 112) of the guide surface is tilted downward. When the second pushing part 112 swings relative to the first pushing part 111, the free end of the shaft end limiting part 1101 can slide along the guide surface, so that the shaft end limiting part 1101 and the hinge shaft swing synchronously. Because the guide surface is an inclined surface, when the rear end (the end close to the first pushing member 111) of the shaft end limiting portion 1101 slides along the guide surface, the guide surface forces the shaft end limiting portion 1101 to drive the hinge shaft to rotate clockwise, so that the second pushing cylinder and the third pushing cylinder can be reset.

Specifically, the limiting guide portion 1103 is a square block-shaped structural member, and a guide groove is formed in a direction toward the second pushing member 112; the guide groove is an expanding groove. The upper part of the notch is a limiting and guiding upper part 11031, and the lower part of the notch is a limiting and guiding lower part 11032.

The second and third jack cylinders can push the cylinder head 122 away from the first jack 111 or contact the first jack 111 during the rotation of the second jack 112 relative to the first jack 111.

During operation, the three thrusting cylinders 12 are recovered, so that the volume of the thrusting device 1 is at the minimum state, and the cylinder heads 122 of the second thrusting cylinder and the third thrusting cylinder are in contact with the bottom of the cavity of the first thrusting member 111. Then, the thruster 1 is placed at the bottom of the groove 31, and the three thruster cylinders 12 are extended out. After the second pushing member 112 rotates to a certain angle, the second pushing cylinder and the third pushing cylinder leave the first pushing seat in succession, and the first pushing cylinder continues to extend to a set stroke; and finally, recovering the three pushing oil cylinders 12 until the pushing device 1 is in the minimum state.

When the first pushing part 111 and the second pushing part 112 are pushed away by the pushing cylinder 12 for a certain angle, one end of the cylinder head 122 of the second pushing cylinder and the third pushing cylinder swings downwards under the action of gravity; at this time, if the limit guide portion 1103 is not provided, the cylinder heads 122 of the second jack cylinder and the third jack cylinder may rapidly swing to the lower limit position. The second pushing oil cylinder and the third pushing oil cylinder cannot effectively provide thrust, so that the breaking efficiency of the pushing device 1 is affected; in addition, when the first pushing cylinder is shortened and the second pushing member 112 swings towards the direction close to the first pushing member 111, the second pushing cylinder and the third pushing cylinder cannot return to the original positions; this also directly results in the second ejector 112 not being able to return to its original position. In summary, the cooperation of the limiting guide portion 1103 and the shaft end limiting portion 1101 can improve the breaking efficiency of the pushing device 1; and helps the thruster 1 to return to the initial condition.

After the second pushing cylinder and the third pushing cylinder leave the bottom of the first pushing member 111 successively, one end of the cylinder head 122 rotates around the hinge shaft downwards due to gravity, when the cylinder head rotates to a set angle, the shaft end limiting part 1101 contacts with the fixed limiting lower part 11022, and the cylinder head 122 stops rotating; when the pushing cylinder 12 is retracted, the shaft end limiting portions 1101 of the second pushing cylinder and the third pushing cylinder are in contact with the limiting guide portion 1103, and the limiting guide lower portion 11032 is matched with the front end lower portion of the shaft end limiting portion 1101, so that the cylinder head 122 rotates upwards to a set position, and the return contact with the bottom of the first pushing member 111 is completed.

In the pushing process of the pushing oil cylinder 12, on a vertical surface, an included angle between the axis of the pushing oil cylinder 12 and the first pushing piece 111 and the second pushing piece 112 changes; therefore, the limit guide structure (the limit guide portion 1103 and the shaft end limit portion 1101) can help the second pushing cylinder and the third pushing cylinder to leave from the bottom of the cavity of the first pushing member 111, and when the pushing cylinder 12 is retracted, the pushing cylinder 12 can return to the original position when contacting with the bottom of the pushing seat, thereby ensuring the normal use of the pushing device 1.

Regarding the limit guide structure of the second and third thrust cylinders, it can also be configured such that springs are disposed at hinge shafts of the second and third thrust cylinders, elasticity of the springs enables the cylinder head 122 to rotate upward, and the shaft end limit portion 1101 is matched with the fixed limit portion 1102 to limit the rotation angle of the two lower thrust cylinders 12. A guide block is arranged at the contact position of the bottom of the first pushing piece 111 and the cylinder head 122, when the cylinder head 122 is close to and pushes against the bottom of the first pushing piece 111, the guide block is matched with the cylinder head 122, and the cylinder head 122 is matched with a set contact position in a contact mode. The limiting guide structure can also be arranged in such a way that the second pushing part 112 vertically pushes the accommodating cavity of the oil cylinder 12 towards the first pushing part 111, the accommodating cavity is provided with an opening towards the pushing seat, the opening is provided with a contacting part of the pushing oil cylinder 12, the contacting part limits the rotation range of the pushing oil cylinder 12, a guide block is arranged at the contacting part of the bottom of the first pushing part 111 and the cylinder head 122, and the guide block is matched with the contacting part, so that the cylinder head 122 can be reset and matched with the bottom of the first pushing part 111; the structure of the limit guide device is various, which is not exemplified here.

According to the lever principle analysis, under the condition that the jacking force is the same, the third jacking oil cylinder positioned at the lowest part is more labor-saving, the second jacking oil cylinder at the middle part is the next time, and the first jacking oil cylinder at the upper part is most labor-saving.

In the pushing operation, under a common condition, the required pushing force at the bottom of the groove 31 is the largest, and the pushing is started from the bottom of the groove 31, so that the pushing force can be transmitted to a larger range through a rock stratum, and the rock breaking effect is favorably improved.

In this embodiment, when the second pushing member 112 rotates around the eleventh hinge 2011, the opening width below the pushing device 1 is greater than the opening width above the second pushing member, so that the pushing device 1 is beneficial to improving the breaking efficiency in the way of distributing the pushing force of the oil cylinder up and down and opening the pushing force of the oil cylinder, and the pushing device 1 has a reasonable stress structure, so that the pushing device 1 is easier to manufacture and is not easy to damage.

The first jacking oil cylinder enables the lower part of the jacking device 1 to have a relatively larger stroke under the condition that the stroke of the oil cylinder is limited, and the third jacking oil cylinder enables the jacking device 1 to obtain relatively larger jacking force.

The cylinder head 122 is in sliding fit with the cylinder base 121, hydraulic oil can push the cylinder head 122 to move telescopically relative to the cylinder base 121, the end part of the cylinder head 122 far away from the cylinder base 121 is a pushing surface in contact with a rock stratum, the first pushing piece 111 is far away from the cylinder head 122 and is in contact with the rock stratum during pushing operation in the telescopic direction of the oil cylinder, the first pushing piece 111 is a pushing surface, the pushing surface is a plane, and the first pushing piece 111 is of a box structure. Two surfaces in contact with the rock stratum can be parallel, a larger pushing stroke can be obtained more easily relative to the round pushing support under the condition that the stroke of the oil cylinder is limited, a contact surface with the rock stratum which is relatively larger can be obtained easily, and the diameter of the oil cylinder which is larger can be obtained easily, so that larger pushing force can be obtained.

When the bottom of the pushing device 1 is positioned at the bottom of the groove 31, the upper part of the pushing device 1 can be positioned outside the groove 31, after the pushing cylinder 12 is recovered, the shape of the pushing cylinder is relatively regular, and loose rock strata cannot easily block the pushing device 1 when the pushing device 1 is lifted, so that the pushing device 1 can be conveniently taken off; because the jacking cylinder 12 is positioned in the jacking device 1, the cylinder head 122 is not easy to be damaged by loose rocks.

Further, with continuing reference to fig. 1 and 2, the front end of the excavator is further provided with a mounting bracket 5, and the mounting bracket 5 is detachably connected to the upper body of the excavator through a first connecting portion and a second connecting portion (not shown in the drawings).

The front part of the mounting bracket 5 is provided with a support assembly, the support assembly comprises a support leg 8 and a support oil cylinder, one end of the support leg 8 is hinged with the front part of the mounting bracket 5, the middle part of the support leg 8 is hinged with the support oil cylinder, and the other end of the support oil cylinder is hinged above the front part of the mounting bracket 5; the lower end of the support leg 8 is used for supporting on the ground. When the pushing device 1 is suspended below the lifting bracket 30, the gravity of the pushing device 1 acts on the front end of the lifting arm, which causes the whole equipment to have an overturning moment in a clockwise direction (referring to fig. 1). At the moment, if the supporting legs are not arranged, the foremost end of the walking device forms a fulcrum; after the supporting legs are arranged, because the supporting legs are positioned in front of the walking device, the lower ends of the supporting legs form new fulcrums after being contacted with the ground. That is, the support leg shifts the center of the above-described overturning moment, so that the magnitude of the overturning moment can be reduced. Therefore, the arrangement of the supporting component is beneficial to better stability of the sliding of the excavator.

Because the thruster 1 usually has low requirement on the power of the excavator, a smaller excavator is usually used in view of cost, but the stability of the excavator is not enough when a jacking loader with relatively large carrying weight or a winch encounters relatively large resistance when the thruster 1 is lifted due to the weight of the small excavator. Since the mounting bracket 5 and the support assembly can improve the overall stability of the excavator, the overall stability of the excavator can be ensured even if a smaller excavator is selected. To sum up, set up installing support and supporting component and can reduce the requirement to the excavator model, and then can effectively reduce use cost and energy consumption.

In other embodiments referring to the present embodiment, it is also possible to arrange that the cylinder base 121 of the first pushing cylinder is hinged with the first pushing member 111, and the cylinder head 122 is hinged with the second pushing member 112. The second pushing cylinder and the cylinder seat 121 of the second pushing cylinder are hinged with the pushing seat, and the cylinder head 122 can contact with or leave the second pushing piece 112.

In other embodiments, referring to fig. 5, fig. 6 and fig. 8, the second pushing member 112 may also be slidably connected to the first pushing member 111 through a sliding block 1110. First ejector 111 top is provided with the sliding chamber, and the sliding chamber has the opening downwards, and sliding block 1110 is located the sliding chamber, sliding block 1110 and sliding chamber sliding fit. And the upper portion of the first pushing member 111 is provided with two sliding stoppers 1105 for restricting the sliding block 1110 and preventing the sliding block 1110 from coming off from the upper portion.

The upper part of the second pushing member 112 is located in the opening of the sliding cavity, and the upper part of the second pushing member 112 and the sliding block 1110 are hinged to the eleventh hinge 2011. The structure has the advantage that under the condition that the rotation angle of the second pushing member 112 is limited, the volume of the opened pushing device 1 is increased, and the pushing effect is improved.

In other embodiments, referring to fig. 2, a slag discharge hole 119 is formed in the bottom of the first pushing member 111, and the slag discharge hole 119 is a through hole penetrating through the bottom, so that rocks are not easily accumulated in the pushing device 1, and normal operation of the pushing device 1 is not affected.

Referring to fig. 3, in other embodiments, the second pushing member 112 further includes a baffle assembly, which specifically includes a first baffle 117 and a second baffle 118, where the first baffle 117 is fixed on two sides of the second pushing member 112 by bolts, so that the limiting guide devices on two sides of the second pushing member 112 are not in contact with the rock, and the limiting guide devices are prevented from being stuck or accidentally damaged. The second shutter 118 is connected to the first shutter 117 for protecting the cylinder head 122.

In other embodiments, the pushing device 1 may be provided with only one pushing cylinder 12, and the effect of the pushing cylinder 12 located at the position close to the lower end of the two pushing members is the best. Or, two pushing cylinders 12 arranged up and down may be provided, two ends of the upper pushing cylinder 12 are respectively hinged with two pushing members, one end of the lower pushing cylinder 12 is hinged with one pushing member, and the other end is detachably abutted with the other pushing member. Or one end of the upper pushing oil cylinder 12 is hinged with one pushing piece, and the other end is detachably abutted with the other pushing piece; two ends of the pushing oil cylinder 12 at the lower part are respectively hinged with the two pushing pieces. Or, the pushing device 1 may also be provided with more than three pushing cylinders 12, wherein two ends of one pushing cylinder 12 are respectively hinged with two pushing pieces.

With continued reference to fig. 1 and 3, a lifting lug 114 is integrally disposed above the first pushing member 111, the lifting lug 114 is connected to a winch, the winch is mounted on the lower portion of the lifting support 30, the lifting support 30 is mounted on one end of the lifting arm, the other end of the lifting arm is hinged to the first hinge portion 201 with the mounting bracket 5, one end of the lifting cylinder is hinged to the second hinge portion 202 with the lifting arm, and the other end of the lifting cylinder is hinged to the third hinge portion 203 with the mounting bracket 5.

Referring to fig. 9, the lifting bracket 30 includes a first bracket 301, a second bracket 302 and a third bracket 303, and the first bracket is hinged to the end of the lifting arm 6 through an eighth hinge portion 208. The second bracket 302 is a cross structure and is integrally formed by two strip-shaped structures, wherein a ninth hinge 209 of one strip-shaped structure facing upward is respectively located at two ends, the first bracket 301 and the second bracket 302 are hinged to the ninth hinge 209, and a tenth hinge 2010 is arranged at two ends of the other strip-shaped structure. A winch 10 is mounted on the lower portion of the third support 303, the winch is driven by a hydraulic motor, and the second support 302 and the third support 303 are hinged to a tenth hinge part 2010; the first support 301 and the second support 302 are not rotated in one direction, and the third support 303 and the second support 302 are not rotated in the same direction. The lifting bracket 30 can be laterally rotated.

In other embodiments, the winch can be driven by a motor or high-pressure air, and the specific driving mode is determined according to the actual condition of the power machine;

by using the winch 10 as a lifting device, the pushing device 1 only needs to be in the up-and-down direction in the lifting process, which is more beneficial to controlling the direction of the pushing device 1.

The bracket rotator 304 drives the first bracket 301 to rotate, so that the winch 10 can be ensured to obtain a stable downward position in any state, the thrustor 1 can rotate at a certain angle, the excavator can enable the thrustor 1 to easily enter a groove at any position, and the operation efficiency is improved.

The support rotator 304 includes a rotation cylinder 3041, a first rotation link 3042, and a second rotation link 3043; the rotating cylinder 3041 and the lifting arm 6 are hinged to the fourth hinge portion 204, and the other end of the rotating cylinder 3041 and the first rotating link 3042 are hinged to the fifth hinge portion 205. The other end of the first rotating link 3042 is hinged to the sixth hinge portion 206 with the lifting arm 6; one end of a second rotating link 3043 is hinged to the fifth hinge portion 205 with the rotating cylinder 3041 and the first rotating link 3042, and the other end of the second rotating link 3043 is hinged to the first support 301. The rotating cylinder 3041 extends and retracts to drive the second rotating connecting rod 3043 to move, and the second rotating connecting rod 3043 drives the first support 301 to rotate, so as to drive the pushing device 1 to rotate; the first rotating link 3042 limits the position of the fifth hinge 205, so that the bracket rotator 304 can obtain a relatively larger rotating angle of the pusher 1 in a limited space.

In other embodiments, the lifting bracket 30 may also be configured such that the bracket rotator 304 is a motor, the motor is fixedly connected to the end of the lifting arm 6, the other end of the motor is fixedly connected to a connecting structure, the winch 10 is connected to the lower portion of the connecting structure, and the connecting structure is a universal joint, which enables the winch to obtain a stable downward position.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A formation thruster, comprising:

2. The formation thruster of claim 1, further comprising:

the cylinder base is hinged with one of the first pushing piece and the second pushing piece, and the cylinder head can be abutted against or separated from the other of the first pushing piece and the second pushing piece.

3. The formation thruster of claim 1, further comprising:

the rock stratum pushing device comprises at least two pushing oil cylinders, and the at least two pushing oil cylinders comprise a first pushing oil cylinder and a second pushing oil cylinder;

4. The formation thruster of claim 3, further comprising:

the at least two pushing oil cylinders are arranged up and down;

5. The formation thruster of claim 4, further comprising:

the shaft end limiting part is of a strip-shaped structure;

6. The formation thruster of claim 5, further comprising:

the limiting guide part is provided with a guide groove which is an expanding groove; the lower groove surface of the guide groove forms the guide surface.

7. The formation thruster of claim 5, further comprising:

the first pushing oil cylinder is positioned above the second pushing oil cylinder.

8. The formation thruster of claim 5, further comprising:

a limit groove is formed in the fixed limit part, and groove walls on two sides of the limit groove extend along the radial direction of the hinge shaft; the shaft end limiting part is of a strip-shaped structure and extends along the radial direction of the hinge shaft, and the groove wall of the limiting groove can limit the rotation angle of the shaft end limiting part.

9. The formation thruster of claim 4, further comprising:

the end part of the cylinder head of the lower pushing oil cylinder is provided with a rolling body, and the lower pushing oil cylinder can be abutted against the first pushing piece through the rolling body.

10. The formation thruster of claim 1, further comprising:

the first pushing piece is of a strip-shaped box structure and comprises an accommodating cavity, and the second pushing piece is of a strip-shaped plate structure; the second ejector can be embedded into the accommodating cavity.

11. The formation thruster of claim 10, further comprising:

baffle assemblies are arranged on two sides of the second pushing piece, and the pushing oil cylinder is arranged between the two baffle assemblies.

12. The formation thruster of claim 1, further comprising:

the first pushing piece is connected with the second pushing piece through a sliding block, the sliding block is in sliding fit with the first pushing piece, and the second pushing piece is hinged with the sliding block;

13. A hoist mounted on an excavator, characterized in that:

the spreader comprises a lifting arm, one end of the lifting arm is connected with the excavator, and the other end of the lifting arm is connected with the rock stratum pushing device of any one of claims 1-12.

14. The spreader of claim 13, wherein:

the excavator lifting device is characterized by further comprising a winch and a lifting support, wherein one end of the lifting arm is directly or indirectly hinged with the excavator, and the other end of the lifting arm is connected with the lifting support; the lifting support is connected with a winch, and the winch is connected with the pushing device; the lifting bracket can rotate transversely.