A metal shearing device based on the front end of an excavator

Abstract

The present invention discloses a metal shearing device based on the front end of an excavator, which belongs to the field of demolition and recovery devices, and includes: a scissor device, wherein the scissor device is connected to a scissor drive device through a connecting rod mechanism, wherein the scissor drive device is connected to a base, wherein a pair of ear plates for connecting to an excavator mechanical arm are installed on the back of the base, wherein a rotating drive device is installed on the front of the base, wherein a box body is connected along the rotating drive device, wherein the scissor drive device and the connecting rod mechanism are sleeved on the box body, and the front end of the box body is connected to the scissor device. This mechanism can realize a large opening angle of the scissor device through the connecting rod mechanism, and the blade is detachable, which is not only simple in structure and easy to maintain, but also exquisite in design and high in precision, which can greatly improve work efficiency.

Description

Technical Field

[0001] The invention relates to the field of demolition and recovery devices, and in particular to a metal shearing device based on the front end of an excavator. Background Art

[0002] At present, in the field of demolition and recycling equipment technology, it is often necessary to shear and demolish objects of different materials and shapes such as iron materials, steel, tanks, pipes, and scrapped cars, which requires the shearing device to have strong cutting force and simple and efficient control. At the same time, it is also necessary to be easy to connect and install with the excavator. The existing steel bar shears have the problems of small opening and closing of the upper jaw shear and the lower jaw shear, and are not easy to connect with the excavator, and the steel blade is not easy to replace, and the maintenance is also very troublesome, so a new improvement is urgently needed. Summary of the invention

[0003] The purpose of the present invention is to overcome the problems of the prior art mentioned above, and to provide a metal shearing device based on the front end of an excavator, which can be directly connected to the mechanical arm of the existing excavator and connected to the oil circuit and the circuit. The scissor drive device drives the connecting rod mechanism to drive the scissor device to perform opening and closing shearing movements, and the shearing angle of the scissor device is controlled by the rotary drive device. The mechanism can achieve a large opening angle of the scissor device through the improved connecting rod mechanism, and the blade is detachable, which is not only simple in structure and easy to maintain, but also exquisite in design and high in precision, which can greatly improve work efficiency.

[0004] The above objectives are achieved through the following technical solutions:

[0005] A metal shearing device based on the front end of an excavator comprises: a scissors device, wherein the scissors device is connected to a scissors drive device via a connecting rod mechanism, the scissors drive device is connected to a base, a pair of ear plates for connecting to an excavator mechanical arm are installed on the back of the base, a rotating drive device is installed on the front of the base, a box is connected along the rotating drive device, the box is sleeved with the scissors drive device and the connecting rod mechanism, and the front end of the box is connected to the scissors device.

[0006] Furthermore, a concave circular groove is provided along the front side of the base, a motor shaft hole and a base oil block hole are provided in the concave circular groove; a circle of bottom plate threaded holes for fixing to the rotation drive device is provided along the outer side of the concave circular groove; the rotation drive device comprises a group of internal gears and internal gear fixing seats which are mutually sleeved and rotatably connected, a circle of internal gear fixing seat threaded holes corresponding to the bottom plate threaded holes are provided on the internal gear fixing seat, and the bottom plate threaded holes and the internal gear fixing seat threaded holes are screwed together by screws; a motor is installed along the back side of the motor shaft hole through the motor fixing seat, the motor shaft passes through the motor shaft hole and is connected to a pinion, the pinion matches the internal gear, a circle of internal gear threaded holes are provided along the internal gear, and the internal gear threaded holes are screwed together with the cover plate threaded holes provided on the base cover plate by screws.

[0007] Furthermore, a cover plate oil block hole is provided on the base cover plate, and the oil block passes through the base oil block hole and the cover plate oil block hole respectively along the back side of the base and is connected to the scissors driving device.

[0008] Furthermore, the oil circuit block is cylindrical, and the bottom end is fixed to the back of the base through a group of arc-shaped fixing blocks. A hydraulic valve block is connected to the oil circuit block, and the hydraulic valve block is connected to the excavator hydraulic system through an oil pipe.

[0009] Furthermore, the scissors driving device comprises a hydraulic cylinder whose bottom is connected to the oil circuit block, and a piston of the hydraulic cylinder is connected to the connecting rod mechanism and drives the connecting rod mechanism to perform folding movement in a horizontal direction.

[0010] Furthermore, the scissors device includes an eagle-beak-shaped upper jaw scissors and a lower jaw scissors hinged to each other, and an upper jaw knife seat and a lower jaw knife seat that can match each other are respectively opened along the inner side of the bottom of the upper jaw scissors and the inner side of the top of the lower jaw scissors, and detachable blades are respectively installed on the upper jaw knife seat and the lower jaw knife seat; the upper jaw scissors and the lower jaw scissors are connected by a connecting rod mechanism.

[0011] Furthermore, the connecting rod mechanism includes a first connecting rod group and a second connecting rod group, one end of which is sleeved by a U-shaped slider and hinged to each other, the other end of the first connecting rod group is hinged to one end of the upper jaw shear clamp, and the other end of the upper jaw shear clamp is fixed to the upper jaw shear; the other end of the second connecting rod group is hinged to one end of the lower jaw shear connecting block, one side of the other end of the lower jaw shear connecting block is fixed to the lower jaw shear, and the other side is connected to a limit block, and the limit block, the upper jaw shear and the lower jaw shear are connected to a locking nut through a guide pin.

[0012] Furthermore, the box body includes a group of mutually symmetrical support plates, one end of the support plate is welded to the rotary drive device, and the other end is fixedly connected to the scissors device through a support plate clamp, and mutually symmetrical sliding grooves are provided along the support plates; it also includes a group of cover plates for connecting the support plates, and the cover plates are provided with U-shaped grooves to facilitate the folding movement of the connecting rod mechanism.

[0013] Furthermore, the support plate clamps are respectively arranged on both sides of the scissors device and are connected to the locking nuts through guide pins.

[0014] Furthermore, a plurality of weight-reducing hollow portions are respectively provided along the support plate and the cover plate.

[0015] Beneficial Effects

[0016] A metal shearing device based on the front end of an excavator made by the technical solution of the present invention can be directly connected to the mechanical arm of an existing excavator and connected to the oil circuit and the circuit. The scissor drive device drives the connecting rod mechanism to drive the scissor device to perform opening and closing shearing movements, and the shearing angle of the scissor device is controlled by the rotary drive device. The mechanism can achieve a large opening angle of the scissor device through the connecting rod mechanism, and the blade is detachable, which is not only simple in structure and easy to maintain, but also exquisite in design and high in precision, which can greatly improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a metal shearing device based on the front end of an excavator according to the present invention;

[0018] Figure 2 This is a schematic diagram of the installation of a rotating drive device and a base of a metal shearing device based on the front end of an excavator according to the present invention;

[0019] Figure 3 It is a structural schematic diagram of a rotary drive device of a metal shearing device based on the front end of an excavator according to the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the upper jaw shear and the lower jaw shear of a metal shearing device based on the front end of an excavator according to the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of a scissor device of a metal shearing device based on the front end of an excavator according to the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of a scissor driving device of a metal shearing device based on the front end of an excavator according to the present invention;

[0023] Figure 7 This is a schematic diagram of the installation of a support plate clamp of a metal shearing device based on the front end of an excavator according to the present invention;

[0024] Figure 8 This is a schematic diagram of the box structure of a metal shearing device based on the front end of an excavator according to the present invention;

[0025] Fig. 9 The present invention is a schematic diagram of the connecting rod mechanism structure of a metal shearing device based on the front end of an excavator. DETAILED DESCRIPTION

[0026] It should be noted that the description and description order of the specific structure in this section are only for the description of the specific embodiment and should not be regarded as having any limiting effect on the protection scope of the present invention. In addition, the embodiments in this section and the features in the embodiments can be combined with each other in the absence of conflict.

[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 As shown, a metal shearing device based on the front end of an excavator includes: a scissors device 3, wherein the scissors device 3 is connected to a scissors drive device 6 through a connecting rod mechanism 4, and the scissors drive device 6 is connected to a base 1, and a pair of ear plates 8 for connecting to the excavator mechanical arm are installed on the back of the base 1, and a rotating drive device 7 is installed on the front of the base 1, and a box body 5 is connected along the rotating drive device 7, and the box body 5 is sleeved with the scissors drive device 6 and the connecting rod mechanism 4, and the front end of the box body 5 is connected to the scissors device 3.

[0029] Specifically, Figure 2 and 3As shown, a concave circular groove 1-4 is provided along the front side of the base 1, and a motor shaft hole 1-1 and a base oil block hole 1-2 are provided in the concave circular groove 1-4; a circle of bottom plate threaded holes 1-3 for fixing the rotary drive device 7 is provided along the outer side of the concave circular groove 1-4; the rotary drive device 7 includes a group of internal gears 7-1 and internal gear fixing seats 7-2 which are mutually sleeved and rotatably connected, and a circle of internal gear fixing seat threaded holes 7-21 corresponding to the bottom plate threaded holes-3 are provided on the internal gear fixing seat 7-2. The bottom plate threaded hole 1-3 is screwed to the inner gear fixing seat threaded hole 7-21 by screws; a motor 7-4 is installed along the back of the motor shaft hole 1-1 through the motor fixing seat 7-41, and the shaft of the motor 7-4 passes through the motor shaft hole 1-1 and is connected to the pinion 7-3, the pinion 7-3 matches the inner gear 7-1, and a circle of inner gear threaded holes 7-11 is provided along the body of the inner gear 7-1, and the inner gear threaded holes 7-11 are screwed to the cover plate threaded holes 2-1 provided on the base cover plate 2 by screws. As an optimization of this embodiment, in order to prevent the pinion 7-3 from shifting during movement, a pinion shield 7-31 is added, and the pinion shield is fixed by four shield pins 7-32. The base cover plate 2 is provided with a cover plate oil block hole 2 - 2 , and the oil block 6 - 2 respectively penetrates the base oil block hole 1 - 2 and the cover plate oil block hole 2 - 2 along the back side of the base 1 , and is connected to the scissors drive device 6 .

[0030] In this solution, the oil circuit block 6-2 is cylindrical, and the bottom end is fixed to the back of the base 1 through a group of arc-shaped fixing blocks 6-4. A hydraulic valve block 6-3 is connected to the oil circuit block 6-2, and the hydraulic valve block 6-3 is connected to the excavator hydraulic system through an oil pipe.

[0031] like Figure 6 As shown, the scissors driving device 6 includes a hydraulic cylinder 6-1 whose bottom is connected to the oil circuit block 6-2, and a piston of the hydraulic cylinder 6-1 is connected to the connecting rod mechanism 4 and drives the connecting rod mechanism 4 to perform folding movement in the horizontal direction.

[0032] like Figure 4 and 5 As shown, the scissors device 3 includes an eagle-beak-shaped upper jaw scissors 3-1 and a lower jaw scissors 3-2 which are hinged to each other, and an upper jaw knife seat 3-11 and a lower jaw knife seat 3-21 which can match each other are respectively provided along the inner side of the bottom of the upper jaw scissors 3-1 and the inner side of the top of the lower jaw scissors 3-2. A detachable blade 3-3 is respectively installed on the upper jaw knife seat 3-11 and the lower jaw knife seat 3-21, and the blade consists of two parts, forming a V-shape connected to the upper jaw knife seat 3-11 and the lower jaw knife seat; the upper jaw scissors 3-11 and the lower jaw scissors 3-2 are respectively connected by a connecting rod mechanism 4.

[0033] like Fig. 9 As shown, the connecting rod mechanism 4 in the present device includes a first connecting rod group 4-1 and a second connecting rod group 4-2, one end of which is sleeved by a U-shaped slider 4-5 and hinged to each other, the other end of the first connecting rod group 4-1 is hinged to one end of the upper jaw shear clamp 4-3, and the other end of the upper jaw shear clamp 4-3 is fixed to the upper jaw shear 3-1; the other end of the second connecting rod group 4-2 is hinged to one end of the lower jaw shear connecting block 4-4 (the top of the lower jaw shear connecting block 4-4 can be in contact with the upper jaw shear to achieve the effect of limiting closing), one side of the other end of the lower jaw shear connecting block 4-4 is fixed to the lower jaw shear 3-2, and the other side of the other end of the lower jaw shear connecting block 4-4 is connected to the limit block 4-6, and the limit block 4-6, the upper jaw shear 3-1 and the lower jaw shear 3-2 are respectively connected to the locking nut through the guide pin 3-4.

[0034] like Figure 7 and 8As shown, the box body 5 includes a group of mutually symmetrical support plates 5-1, one end of the support plate 5-1 is welded to the rotation drive device 7 (that is, welded to the base cover plate 2), and the other end is fixedly connected to the scissor device 3 through a support plate clamp 5-3, and mutually symmetrical slide grooves 5-11 are opened along the support plate 5-1, and the slide grooves 5-11 match the U-shaped slider 4-5. When the hydraulic cylinder 6-1 drives the piston to drive the U-shaped slider 4-5 connected thereto to make horizontal movement, the U-shaped slider 4- The connecting rod mechanism 4 can be effectively limited by moving forward or backward along the slide groove 5-11; it also includes a set of cover plates 5-2 for connecting the support plate 5-1, and the cover plates 5-2 are provided with U-shaped notches 5-21 for folding the connecting rod mechanism 4. In this embodiment, the length of the cover plates is less than the length of the support plate 5-1, and the ends of the first connecting rod group 4-1 and the second connecting rod group 4-2 of the connecting rod mechanism 4 are always kept outside the box body 5. The support plate clamp 5-3 is respectively arranged on both sides of the scissor device 3, and is connected to the locking nut through the guide pin 3-4. The support plate clamp 5-3 includes a first clamping plate 5-31 and a second clamping plate 5-32. The support plate 5-1 is clamped between the first clamping plate 5-31 and the second clamping plate 5-32. The area of ​​the clamped support plate 5-1 and the first clamping plate 5-31 and the second clamping plate 5-32 are respectively provided with mutually symmetrical pin holes, and are fixed by the pin 5-34. A pad 5-33 at the same level as the support plate 5-1 is also clamped between the first clamping plate 5-31 and the second clamping plate 5-32. The pad 5-33, the first clamping plate 5-31 and the second clamping plate 5-32 are respectively provided with guide pin holes, which are connected through the guide pin 3-4, and the ends are tightened and limited by the locking nut. In this way, the support plate 5-1 well limits the distance between the scissor device 3 and the base 1, so that under the drive of the hydraulic cylinder 6-1, the connecting rod mechanism drives the upper jaw scissor 3-1 and the lower jaw scissor 3-2 to perform opening and closing shearing movements with the guide pin 3-4 as the node. The introduction of the clamp can make the device more convenient to replace scissor devices of other specifications, which can greatly save costs.

[0035] As a further optimization of the device, a number of weight-reducing hollows are respectively opened along the support plate 5-1 and the cover plate 5-2, so that the weight of the device itself can be effectively reduced.

[0036] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be thought of by anyone familiar with the technology within the technical scope disclosed by the present invention are all within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope of the claims.

Claims

1. A metal shearing device based on the front end of an excavator, characterized in that ,include: A scissors device, wherein the scissors device is connected to a scissors drive device through a connecting rod mechanism, the scissors drive device is connected to a base, a pair of ear plates for connecting to an excavator mechanical arm are installed on the back of the base, a rotating drive device is installed on the front of the base, a box is connected along the rotating drive device, the scissors drive device and the connecting rod mechanism are mounted on the box, and the front end of the box is connected to the scissors device.

2. A metal shearing device based on the front end of an excavator according to claim 1, characterized in that: A concave circular groove is provided along the front side of the base, and a motor shaft hole and a base oil block hole are provided in the concave circular groove; a circle of bottom plate threaded holes for fixing with the rotation drive device is provided along the outer side of the concave circular groove; the rotation drive device comprises a group of internal gears and internal gear fixing seats which are mutually sleeved and rotatably connected, the internal gear fixing seat is provided with a circle of internal gear fixing seat threaded holes corresponding to the bottom plate threaded holes, and the bottom plate threaded holes and the internal gear fixing seat threaded holes are screwed together by screws; a motor is installed along the back side of the motor shaft hole through the motor fixing seat, the shaft of the motor passes through the motor shaft hole and is connected with a pinion, the pinion matches the internal gear, a circle of internal gear threaded holes is provided along the internal gear, and the internal gear threaded holes are screwed together with the cover plate threaded holes provided on the base cover plate by screws.

3. A metal shearing device based on the front end of an excavator according to claim 2, characterized in that: The base cover plate is provided with a cover plate oil block hole, and the oil block passes through the base oil block hole and the cover plate oil block hole along the back side of the base, and is connected to the scissors driving device.

4. The metal shearing device based on the front end of the excavator according to claim 3 is characterized in that: The oil circuit block is cylindrical, and the bottom end is fixed to the back of the base through a group of arc-shaped fixing blocks. A hydraulic valve block is connected to the oil circuit block, and the hydraulic valve block is connected to the hydraulic system of the excavator through an oil pipe.

5. The metal shearing device based on the front end of the excavator according to claim 3 is characterized in that: The scissors driving device comprises a hydraulic cylinder whose bottom is connected to the oil circuit block, and a piston of the hydraulic cylinder is connected to the connecting rod mechanism and drives the connecting rod mechanism to perform folding movement in a horizontal direction.

6. The metal shearing device based on the front end of an excavator according to claim 1, characterized in that: The scissors device comprises an eagle-beak-shaped upper jaw scissors and a lower jaw scissors which are hinged to each other, and an upper jaw knife seat and a lower jaw knife seat which can match each other are respectively provided along the inner side of the bottom of the upper jaw scissors and the inner side of the top of the lower jaw scissors, and detachable blades are respectively installed on the upper jaw knife seat and the lower jaw knife seat; the upper jaw scissors and the lower jaw scissors are respectively connected by a connecting rod mechanism.

7. The metal shearing device based on the front end of the excavator according to claim 6, characterized in that: The connecting rod mechanism includes a first connecting rod group and a second connecting rod group, one end of which is sleeved by a U-shaped slider and hinged to each other. The other end of the first connecting rod group is hinged to one end of the upper jaw shear clamping plate, and the other end of the upper jaw shear clamping plate is fixed to the upper jaw shear; the other end of the second connecting rod group is hinged to one end of the lower jaw shear connecting block, one side of the other end of the lower jaw shear connecting block is fixed to the lower jaw shear, and the other side is connected to a limit block. The limit block, the upper jaw shear and the lower jaw shear are connected to a locking nut through a guide pin.

8. The metal shearing device based on the front end of an excavator according to claim 1, characterized in that: The box body includes a group of mutually symmetrical support plates, one end of which is welded to the rotary drive device, and the other end is fixedly connected to the scissor device through a support plate clamp, and mutually symmetrical sliding grooves are provided along the support plates; it also includes a group of cover plates for connecting the support plates, and the cover plates are provided with U-shaped grooves that facilitate the folding movement of the connecting rod mechanism.

9. The metal shearing device based on the front end of the excavator according to claim 8, characterized in that: The support plate clamps are respectively arranged on both sides of the scissor device and are connected with the locking nuts through guide pins.

10. The metal shearing device based on the front end of an excavator according to claim 8, characterized in that: A plurality of weight-reducing hollow portions are respectively provided along the support plate and the cover plate.

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