Excavator universal connector convenient to connect

Abstract

The utility model discloses a universal connector convenient to connect and used for an excavator. The universal connector comprises a connecting shell, a locking mechanism; a limiting mechanism; the driving and fixing mechanism is used for driving the limiting mechanism to move left and right and fixing the limiting mechanism and the locking mechanism; the auxiliary fixing mechanism comprises a first fixing mechanism and a second fixing mechanism; before the hydraulic cylinder acts, the second retention mechanism moves downwards to fix the connecting piece, and the first retention mechanism moves upwards to form receding; the hydraulic cylinder drives and pushes the limiting mechanism to stretch out in place, and after the first fixing mechanism moves downwards to fix the connecting piece, the second fixing mechanism moves upwards to form receding. After the hydraulic cylinder continues to act to push the rod body of the connecting piece to stretch out to abut against the locking mechanism, the second retention mechanism moves downwards to fix the connecting piece. The bucket can be conveniently assembled and disassembled, the stress of the hydraulic cylinder after installation is shared by the auxiliary fixing mechanism, the specification of the hydraulic cylinder is effectively reduced, the equipment cost is reduced, the cylinder explosion problem of the hydraulic cylinder is effectively avoided or reduced, and therefore the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator equipment, in particular to a universal connector for an excavator that is easy to connect. Background Art

[0002] An excavator, also known as a backhoe, is an earth-moving machine that uses a bucket to dig materials above or below the supporting surface and load them into transport vehicles or unload them into stockpiles. An excavator mainly consists of a body, a traveling device, a cab, a boom, a boom hydraulic cylinder, a bucket, and a bucket hydraulic cylinder. The movement of the bucket is controlled through the cab to complete the operation. During operation, different working tools will be replaced according to the requirements of different sites or scenarios. Therefore, it is necessary to install a corresponding universal connector at the end of the boom to conveniently install different working tools. The universal connector is fixed by clamping the cylinders on both sides of the bucket, but if one end of the traditional universal connector is not clamped and fastened, the entire bucket will fall and cause an accident.

[0003] Therefore, the purpose of this utility model is to design a universal connector for excavators that can fix the cylinders on both sides of the bucket by driving the corresponding components to move through the action of the hydraulic cylinder, thereby realizing convenient loading and unloading of the bucket, effectively solving the accident problem caused by one end not being connected, and using the auxiliary fixing mechanism to share the force of the hydraulic cylinder after installation, thereby effectively reducing the specifications of the hydraulic cylinder, reducing equipment costs, effectively avoiding or reducing the problem of hydraulic cylinder explosion, and thus improving the safety of use. Utility Model Content

[0004] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a universal connector for an excavator that is easy to connect. The universal connector for an excavator that is easy to connect can effectively solve the technical problems existing in the above-mentioned prior art.

[0005] The technical solution of the utility model is:

[0006] A universal connector for an excavator that is easy to connect, comprising:

[0007] base;

[0008] A rotating member, which can be turned upside down and installed below the base;

[0009] The connecting shell is fixedly installed below the rotating member, and its left and right ends are respectively provided with U-shaped buckle parts for connecting the cylinders on both sides of the bucket and downwardly set tiger-mouth clamping parts;

[0010] The locking mechanism is rotatably mounted below the U-shaped buckle portion by means of a torsion spring. When the right cylinder of the bucket is mounted to the U-shaped buckle portion, the right cylinder of the bucket pushes the locking mechanism to give way and the torsion spring is compressed. After the right cylinder of the bucket is mounted in place, the locking mechanism is reset under the action of the elastic potential energy of the torsion spring and cooperates with the U-shaped buckle portion to limit and fix the right cylinder of the bucket.

[0011] The limiting mechanism can be moved left and right and inserted into the connecting shell below the jaw clamping portion, and is adapted to the jaw clamping portion to limit and fix the left cylinder of the bucket;

[0012] a driving and fixing mechanism, for driving the limiting mechanism to move left and right, and for fixing the limiting mechanism and the locking mechanism, comprising a hydraulic cylinder installed transversely in the connecting housing, a connecting piece fixedly installed at the end of the piston rod of the hydraulic cylinder, and a connecting piece fixedly installed at the end of the cylinder body of the hydraulic cylinder, wherein the connecting piece comprises a seat plate connected to the hydraulic cylinder and a rod body penetrating the connecting housing;

[0013] The auxiliary fixing mechanism includes a first fixing mechanism and a second fixing mechanism which are respectively installed on the connecting shell where the connecting member and the connecting member are provided, and which move up and down accordingly; before the hydraulic cylinder is actuated, the second fixing mechanism moves down to fix the connecting member, and the first fixing mechanism moves up to make way; the hydraulic cylinder drives and pushes the limiting mechanism to extend into place, and after the first fixing mechanism moves down to fix the connecting member, the second fixing mechanism moves up to make way; after the hydraulic cylinder continues to act to push the rod body of the connecting member to extend and abut against the locking mechanism, the second fixing mechanism moves down to fix the connecting member.

[0014] The first fixing mechanism and the second fixing mechanism each include an upper mounting plate and a lower mounting plate fixed to the connecting shell at an upper and lower intervals, and at least one positioning rod that moves up and down and passes through the lower mounting plate. The outer side of the positioning rod is provided with an elastic member between the upper and lower mounting plates. One end of the elastic member is fixed to the bottom of the upper mounting plate, and the other end is fixed to the positioning rod through a corresponding annular convex edge. A corresponding electromagnet is provided on the upper mounting plate above the positioning rod. The top of the positioning rod is spaced apart from the electromagnet. When the electromagnet is energized, the positioning rod moves upward.

[0015] The connecting piece is provided with first through holes corresponding to the number of the positioning rods of the first retaining mechanism. When the connecting piece moves into place, the electromagnet is powered off, and under the action of the elastic potential energy of the elastic piece, the positioning rods move downward and are inserted into the first through holes to fix the connecting piece.

[0016] A second through hole and a third through hole corresponding to the number of positioning rods of the second retaining mechanism are respectively provided on the left and right sides of the connecting member. Before the hydraulic cylinder is driven for the first time, the electromagnet is powered off. Under the action of the elastic potential energy of the elastic member, the positioning rod moves downward and is inserted into the third through hole to fix the connecting member; after the hydraulic cylinder is driven into position for the second time, the positioning rod moves downward and is inserted into the second through hole to fix the connecting member.

[0017] The left and right sides of the rotating member are hinged on the base, and the front and rear ends of the base are rotatably mounted with corresponding oil cylinders, and the piston rod ends of the oil cylinders are hinged to the rotating member.

[0018] The locking mechanism includes a positioning rod rotatably mounted below the U-shaped buckling portion, a locking piece with a diamond-shaped cross-section fixed to the positioning rod, and a torsion spring connected to the two end surfaces of the locking piece is sleeved on the outer side of the positioning rod; after the right side cylinder of the bucket is installed in place, the locking piece abuts against the outer side of the right side cylinder of the bucket, and the rod body abuts against the side of the locking piece to keep the locking piece in a locked state.

[0019] The limiting mechanism comprises a plurality of limiting rods which are spaced apart and arranged side by side in a front-to-back manner and can be moved left and right and inserted into the connecting shell. The upper end surface of the limiting rod is provided with an arc-shaped receiving surface which is adapted to the tiger's mouth clamping portion.

[0020] A guide rod penetrating the U-shaped buckle portion is fixedly mounted above the connecting piece.

[0021] Advantages of this utility model:

[0022] 1) The utility model utilizes the action of the hydraulic cylinder to drive the locking mechanism and the limiting mechanism to move outward, and then respectively cooperate with the U-shaped buckling part and the tiger's mouth clamping part of the connecting shell to achieve clamping and fixing of the cylinders on both sides of the bucket, and convenient disassembly and assembly; even if the cylinder is not fixed on one side of the tiger's mouth clamping part, the cylinder of the U-shaped buckling part can still be fixed under the continued action of the hydraulic cylinder, thereby effectively preventing the bucket from falling completely and preventing accidents caused by falling.

[0023] However, in this case, the force is concentrated on the limiting mechanism, the locking mechanism and the hydraulic cylinder, and the force forms a straight line and is large, and the force is transmitted to each other. Once the hydraulic cylinder explodes, the locking mechanism and the limiting mechanism will lose their effectiveness, and eventually the clamping and fixing effect on the cylinders on both sides of the bucket will be lost. Therefore, on this basis, an auxiliary fixing mechanism is added to fix the locking mechanism and the limiting mechanism after they are moved into place. First, the hydraulic cylinder body is fixed by the second fixing mechanism to isolate the hydraulic cylinder and the locking mechanism. The hydraulic cylinder unidirectionally drives the limiting mechanism to clamp and fix the cylinder on the left side of the bucket. Then, the limiting mechanism is fixed by the first fixing mechanism, so that the hydraulic cylinder unidirectionally drives the locking mechanism to clamp and fix the cylinder on the right side of the bucket. Then, the locking mechanism is fixed by the second fixing mechanism. The auxiliary fixing mechanism is used to share the driving force required by the hydraulic cylinder and the force after installation, thereby effectively reducing the specifications of the hydraulic cylinder, reducing equipment costs, and effectively avoiding or reducing the occurrence of hydraulic cylinder explosion problems, thereby improving safety in use.

[0024] 2) The first retaining mechanism and the second retaining mechanism of the utility model both utilize electromagnets to energize and adsorb to drive the positioning rod to move upward to make way, and then reset the positioning rod under the action of the elastic potential energy of the compressed elastic member to fix the connecting member and the connecting member respectively. The structure is simple and the operation is convenient. More importantly, it can achieve the relief of the force on the hydraulic cylinder, thereby improving the practical effect of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 and Figure 2 It is a structural diagram of the present utility model.

[0026] Figure 3 and Figure 4 It is a structural diagram of the connecting shell.

[0027] Figure 5 It is a cross-sectional schematic diagram of the connecting shell.

[0028] In the accompanying drawings: base 1, rotating part 2, connecting shell 3, U-shaped buckle connection part 301, tiger's mouth clamping part 302, torsion spring 4, hydraulic cylinder 5, locking mechanism 6, connecting part 601, second through hole 6013, third through hole 6014, locking part 602, positioning rod 603, limiting mechanism 7, connecting part 701, first through hole 7011, limiting rod 702, first retaining mechanism 81, second retaining mechanism 82, upper mounting plate 801, lower mounting plate 802, positioning rod 803, elastic part 804, annular flange 805, electromagnet 806, oil cylinder 9, guide rod 10. DETAILED DESCRIPTION

[0029] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the following embodiments and accompanying drawings:

[0030] refer to Figure 1-5 , a universal connector for an excavator that is easy to connect, comprising:

[0031] Base 1;

[0032] The rotating member 2 can be turned upside down and installed below the base 1;

[0033] The connecting housing 3 is fixedly mounted below the rotating member 2, and has a U-shaped buckle connection portion 301 and a downwardly disposed jaw clamping portion 302 at its left and right ends for connecting the two cylinders on both sides of the bucket respectively;

[0034] The locking mechanism 6 is rotatably mounted below the U-shaped buckle portion 301 via the torsion spring 4. When the right cylinder of the bucket is mounted to the U-shaped buckle portion 301, the right cylinder of the bucket pushes the locking mechanism 6 to give way and the torsion spring 4 is compressed. After the right cylinder of the bucket is mounted in place, the locking mechanism 6 is reset under the action of the elastic potential energy of the torsion spring 4 and cooperates with the U-shaped buckle portion 301 to limit and fix the right cylinder of the bucket.

[0035] The limiting mechanism 7 can be moved left and right and inserted into the connecting shell 3 below the said jaw clamping part 302, and is adapted to the said jaw clamping part 302 to limit and fix the right cylinder of the bucket;

[0036] a driving and fixing mechanism for driving the limiting mechanism 7 to move left and right, and for fixing the limiting mechanism 7 and the locking mechanism 6, comprising a hydraulic cylinder 5 installed transversely in the connecting housing 3, a connecting member 701 fixedly installed at the end of the piston rod of the hydraulic cylinder 5, and a connecting member 601 fixedly installed at the end of the cylinder body of the hydraulic cylinder 5, wherein the connecting member 601 comprises a seat plate 6011 connected to the hydraulic cylinder 5 and a rod body 6012 passing through the connecting housing 3;

[0037] The auxiliary fixing mechanism includes a first fixing mechanism 81 and a second fixing mechanism 82 which are respectively installed on the connecting shell 3 where the connecting member 701 and the connecting member 601 are set, and move up and down accordingly; before the hydraulic cylinder 5 is actuated, the second fixing mechanism 82 moves down to fix the connecting member 601, and the first fixing mechanism 81 moves up to make way; the hydraulic cylinder 5 drives and pushes the limiting mechanism 7 to extend into place, and after the first fixing mechanism 81 moves down to fix the connecting member 701, the second fixing mechanism 82 moves up to make way; after the hydraulic cylinder 5 continues to act to push the rod of the connecting member 601 to extend and abut against the locking mechanism 6, the second fixing mechanism 82 moves down to fix the connecting member 601.

[0038] The utility model utilizes the action of the hydraulic cylinder 5 to drive the locking mechanism 6 and the limiting mechanism 7 to move outward, and then respectively cooperate with the U-shaped buckling part 301 and the tiger's mouth clamping part 302 of the connecting shell 3, so as to clamp and fix the cylinders on both sides of the bucket, and facilitate disassembly and assembly; even if the cylinder is not fixed on one side of the tiger's mouth clamping part 302, the cylinder of the U-shaped buckling part 301 can still be fixed under the continued action of the hydraulic cylinder 5, thereby effectively preventing the bucket from falling completely and preventing accidents caused by falling.

[0039] However, in this case, the force is concentrated on the limiting mechanism 7, the locking mechanism 6 and the hydraulic cylinder 5, forming a straight line and being large, and the force is transmitted to each other. Once the hydraulic cylinder 5 explodes, the locking mechanism 6 and the limiting mechanism 7 will lose their effectiveness, and eventually the clamping and fixing function of the cylinders on both sides of the bucket will be lost. Therefore, on this basis, an auxiliary fixing mechanism is added to fix the locking mechanism 6 and the limiting mechanism 7 after they are moved into place. First, the second fixing mechanism 82 is used to fix the cylinder body of the hydraulic cylinder 5, isolating the hydraulic cylinder 5 and the locking mechanism 6. The hydraulic cylinder 5 unidirectionally drives the limiting mechanism 7 to clamp and fix the cylinder on the left side of the bucket. Then, the limiting mechanism 7 is fixed by the first fixing mechanism 81, so that the hydraulic cylinder 5 unidirectionally drives the locking mechanism 6 to clamp and fix the cylinder on the right side of the bucket. Finally, the locking mechanism 6 is fixed by the second fixing mechanism 82. The auxiliary fixing mechanism is used to share the driving force required by the hydraulic cylinder 5 and the force after installation, thereby effectively reducing the specifications of the hydraulic cylinder 5, reducing equipment costs, and effectively avoiding or reducing the occurrence of the hydraulic cylinder 5 explosion problem, thereby improving the safety of use.

[0040] The first fixing mechanism 81 and the second fixing mechanism 82 each include an upper mounting plate 801 and a lower mounting plate 802 fixed to the connecting shell 3 at an upper and lower intervals, and at least one positioning rod 803 that moves up and down and passes through the lower mounting plate 802. The outer side of the positioning rod 803 is located between the upper and lower mounting plates 802 and is sleeved with an elastic member 804. One end of the elastic member 804 is fixed to the bottom of the upper mounting plate 801, and the other end is fixed to the positioning rod 803 through a corresponding annular convex edge 805. A corresponding electromagnet 806 is provided on the upper mounting plate 801 above the positioning rod 803. The top of the positioning rod 803 is spaced apart from the positioning rod 803. When the electromagnet 806 is energized, the positioning rod 803 moves upward.

[0041] The first retaining mechanism 81 and the second retaining mechanism 82 of the utility model both utilize the electromagnet 806 to be energized and attracted to drive the positioning rod 803 to move upward to make way, and then reset the positioning rod 803 under the elastic potential energy of the compressed elastic member 804 to fix the connecting member 601 and the connecting member 701 respectively. The structure is simple and the operation is convenient. More importantly, it can relieve the force on the hydraulic cylinder 5, thereby improving the practical effect of the utility model.

[0042] The connecting piece 701 is provided with first through holes 7011 corresponding to the number of positioning rods 803 of the first retaining mechanism 81. When the connecting piece 701 moves into place, the electromagnet 806 is powered off, and under the action of the elastic potential energy of the elastic piece 804, the positioning rods 803 move downward and are inserted into the first through holes 7011 to fix the connecting piece 701.

[0043] The left and right sides of the connecting member 601 are respectively provided with a second through hole 6013 and a third through hole 6014 corresponding to the number of the positioning rods 803 of the second fixing mechanism 82. Before the hydraulic cylinder 5 is driven for the first time, the electromagnet 806 is powered off. Under the action of the elastic potential energy of the elastic member 804, the positioning rod 803 moves downward and is inserted into the third through hole 6014 to fix the connecting member 601; after the hydraulic cylinder 5 is driven into position for the second time, the positioning rod 803 moves downward and is inserted into the second through hole 6013 to fix the connecting member 601.

[0044] The left and right sides of the rotating member 2 are hinged to the base 1 , and the front and rear ends of the base 1 are rotatably mounted with corresponding oil cylinders 9 , and the piston rod ends of the oil cylinders 9 are hinged to the rotating member 2 .

[0045] The locking mechanism 6 includes a limiting rod 803 rotatably mounted below the U-shaped buckle 301, and a locking member 602 with a diamond-shaped cross-section is fixedly connected to the limiting rod 803. The outer side of the limiting rod 803 is sleeved with a torsion spring 4 connected to the two end surfaces of the locking member 602; after the right side cylinder of the bucket is installed in place, the locking member 602 abuts against the outer side of the right side cylinder of the bucket, and the rod body 6012 abuts against the side of the locking member 602 to keep the locking member 602 in a locked state.

[0046] The limiting mechanism 7 includes a plurality of limiting rods 702 that are spaced apart and arranged side by side and can be moved left and right and inserted into the connecting shell 3. The upper end surface of the limiting rod 702 is provided with an arc-shaped receiving surface that is compatible with the tiger's mouth clamping portion 302.

[0047] A guide rod 10 passing through the U-shaped buckle portion 301 is fixedly installed above the connecting member 601 .

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A universal connector for an excavator that is easy to connect, characterized in that: include: Base (1); A rotating member (2) is installed below the base (1) so as to be capable of turning upside down; The connecting shell (3) is fixedly installed below the rotating member (2), and its left and right ends are provided with U-shaped buckling parts (301) for connecting the cylinders on both sides of the bucket and downwardly arranged tiger's mouth clamping parts (302); The locking mechanism (6) is rotatably mounted below the U-shaped buckle connection (301) via a torsion spring (4). When the right cylinder of the bucket is mounted on the U-shaped buckle connection (301), the right cylinder of the bucket pushes the locking mechanism (6) to give way and the torsion spring (4) is compressed. After the right cylinder of the bucket is mounted in place, the locking mechanism (6) is driven to reset under the action of the elastic potential energy of the torsion spring (4) and cooperates with the U-shaped buckle connection (301) to limit and fix the right cylinder of the bucket. The limiting mechanism (7) is movable leftward and rightward and inserted into the connecting shell (3) below the jaw clamping portion (302), and is adapted to the jaw clamping portion (302) to limit and fix the left cylinder of the bucket; A driving and fixing mechanism is used for driving the limiting mechanism (7) to move left and right, and for fixing the limiting mechanism (7) and the locking mechanism (6), comprising a hydraulic cylinder (5) installed transversely in the connecting housing (3), a connecting member (701) fixedly installed at the end of the piston rod of the hydraulic cylinder (5), and a connecting member (601) fixedly installed at the end of the cylinder body of the hydraulic cylinder (5), wherein the connecting member (601) comprises a seat plate (6011) connected to the hydraulic cylinder (5) and a rod body (6012) penetrating the connecting housing (3); The auxiliary fixing mechanism comprises a first fixing mechanism (81) and a second fixing mechanism (82) which are respectively mounted on the connecting housing (3) located on the connecting member (701) and the connecting member (601) and are movable up and down correspondingly; before the hydraulic cylinder (5) is actuated, the second fixing mechanism (82) moves downward to fix the connecting member (601), and the first fixing mechanism (81) moves upward to make way; the hydraulic cylinder (5) drives and pushes the limiting mechanism (7) to extend into position, and after the first fixing mechanism (81) moves downward to fix the connecting member (701), the second fixing mechanism (82) moves upward to make way; after the hydraulic cylinder (5) continues to actuate and pushes the rod body of the connecting member (601) to extend and abut against the locking mechanism (6), the second fixing mechanism (82) moves downward to fix the connecting member (601).

2. The universal connector for excavators that is easy to connect according to claim 1, characterized in that: The first retaining mechanism (81) and the second retaining mechanism (82) both comprise an upper mounting plate (801) and a lower mounting plate (802) fixed to the connecting shell (3) at an interval, and at least one positioning rod (803) that moves up and down and passes through the lower mounting plate (802); an elastic member (804) is sleeved on the outer side of the positioning rod (803) between the upper and lower mounting plates (802); one end of the elastic member (804) is fixed to the bottom of the upper mounting plate (801), and the other end is fixed to the positioning rod (803) through a corresponding annular convex edge (805); and a corresponding electromagnet (806) is provided on the upper mounting plate (801) above the positioning rod (803); the top of the positioning rod (803) is spaced apart from the electromagnet (806); and the positioning rod (803) moves upward when the electromagnet (806) is energized.

3. The universal connector for excavators that is easy to connect according to claim 2, characterized in that: The connecting piece (701) is provided with first through holes (7011) corresponding to the number of the positioning rods (803) of the first retaining mechanism (81). When the connecting piece (701) moves into position, the electromagnet (806) is powered off, and under the action of the elastic potential energy of the elastic piece (804), the positioning rods (803) move downward and are inserted into the first through holes (7011) to fix the connecting piece (701).

4. The universal connector for excavators that is easy to connect according to claim 2, characterized in that: The left and right sides of the connecting member (601) are respectively provided with a second through hole (6013) and a third through hole (6014) corresponding to the number of the positioning rods (803) of the second retaining mechanism (82); before the hydraulic cylinder (5) is driven for the first time, the electromagnet (806) is powered off, and under the action of the elastic potential energy of the elastic member (804), the positioning rod (803) moves downward and is inserted into the third through hole (6014) to fix the connecting member (601); after the hydraulic cylinder (5) is driven into position for the second time, the positioning rod (803) moves downward and is inserted into the second through hole (6013) to fix the connecting member (601).

5. The universal connector for excavators that is easy to connect according to claim 1, characterized in that: The left and right sides of the rotating member (2) are hinged on the base (1), and the front and rear ends of the base (1) are rotatably mounted with corresponding oil cylinders (9), and the piston rod ends of the oil cylinders (9) are hinged to the rotating member (2).

6. The universal connector for excavators that is easy to connect according to claim 1, characterized in that: The locking mechanism (6) comprises a positioning rod (603) rotatably mounted below the U-shaped buckle portion (301); a locking member (602) having a diamond-shaped cross section is fixedly connected to the positioning rod (603); a torsion spring (4) connected to both end surfaces of the locking member (602) is sleeved on the outer side of the positioning rod (603); after the right cylinder of the bucket is installed in place, the locking member (602) abuts against the outer side of the right cylinder of the bucket, and the rod body (6012) abuts against the side of the locking member (602) to keep the locking member (602) in a locked state.

7. The universal connector for excavators that is easy to connect according to claim 1, characterized in that: The limiting mechanism (7) comprises a plurality of limiting rods (702) arranged side by side with a front-to-back spacing and movable left-to-right and inserted into the connecting shell (3); the upper end surface of the limiting rod (702) is provided with an arc-shaped receiving surface adapted to the tiger's mouth clamping portion (302).

8. The universal connector for excavators that is easy to connect according to claim 1, characterized in that: A guide rod (10) passing through the U-shaped buckle portion (301) is fixedly mounted above the connecting member (601).

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