A punching tool for bucket tooth tip of excavator

Abstract

The utility model relates to a punching tool for an excavator bucket tooth tip, comprising a table frame, a support plate transversely fixed on the top of the table frame, and two drilling units arranged on the top of the support plate and relatively distributed left and right respectively; a slot hole is opened in the support plate, and the slot hole is arranged between the two drilling units; it also includes a positioning component arranged on the support plate, the positioning component includes a support frame fixed on the top of the support plate, a positioning cylinder fixed on the support frame, a pressure block fixed on the telescopic end of the positioning cylinder, and a conversion mechanism arranged between the two drilling units and coordinated with the pressure block, and the telescopic end of the positioning cylinder is arranged vertically downward; the utility model greatly simplifies the operation process to achieve the effect of saving time and labor and improving processing efficiency, and can also reduce processing errors; in addition, it also has an automatic discharging function to further improve processing efficiency.

Description

Technical Field

[0001] The utility model relates to a punching tool for a bucket tooth tip of an excavator. Background Art

[0002] A bucket refers to a bucket body installed on the boom of an excavator for picking up materials, also called a digging bucket. A blade is provided on the edge of the bucket, and a row of teeth similar to human teeth is fixed on the blade. The teeth include a tooth seat and a tooth tip, which are detachably connected by a pin shaft. In order to allow the pin shaft to pass through, a pin hole is required to be processed on both sides of the tooth tip with the help of a drilling device and the concentricity of the two pin holes is ensured. However, the existing drilling equipment can only process one pin hole at a time. If the pin hole on the other side is to be processed, the operator must first remove the tooth tip from the fixture of the drilling equipment, then turn it 180 degrees and install it back on the fixture, and finally perform the drilling steps in sequence. Therefore, the operation process is relatively cumbersome, time-consuming and labor-intensive, which leads to low processing efficiency, and it is also difficult to ensure the concentricity of the pin holes on both sides, resulting in large processing errors. In addition, after completing the drilling steps on both sides, the tooth tip must be manually removed from the fixture, and automatic material discharge cannot be achieved, which further affects the processing efficiency, so it needs to be further improved. Utility Model Content

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a punching tool for the bucket tooth tip of an excavator which greatly simplifies the operation process to save time and labor and improve processing efficiency, and can also reduce processing errors and have an automatic discharging function.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a punching tool for the bucket tooth tip of an excavator, comprising a table frame, a support plate transversely fixed on the top of the table frame, and two drilling units arranged on the top of the support plate and respectively distributed oppositely to each other on the left and right, characterized in that:

[0005] The drilling unit comprises a bottom plate fixed laterally above the supporting plate, an electric slide fixed on the top of the bottom plate, a drilling motor fixed on the moving end of the electric slide to have a left-right translation function with the help of the electric slide, and a drill bit concentrically and detachably fixed on the rotating shaft of the drilling motor;

[0006] A slot is provided in the support plate, and the slot is provided between the two drilling units;

[0007] It also includes a positioning assembly arranged on the support plate, the positioning assembly includes a support frame fixed on the top of the support plate, a positioning cylinder fixed on the support frame, a pressure block fixed on the telescopic end of the positioning cylinder, and a conversion mechanism arranged between the two drilling units and cooperating with the pressure block, the telescopic end of the positioning cylinder is arranged vertically downward;

[0008] The conversion mechanism includes a conversion disk that is vertically and movably inserted in the slot and located below the pressure block, a servo reduction motor fixed to the bottom of the support plate, and a plurality of detachable positioning protrusions fixed to the outer circumferential surface of the conversion disk and evenly arranged at equal angles along the circumferential direction. The rotating shaft of the servo reduction motor is horizontally arranged and concentrically fixed on the conversion disk.

[0009] Preferably, the number of the positioning protrusions is at least 5.

[0010] Preferably, a plurality of limiting holes uniformly distributed at equal angles along the circumferential direction are provided between the left and right end surfaces of the conversion disk, and the number of the limiting holes is equal to the number of the positioning protrusions.

[0011] Preferably, the positioning assembly also includes a limit cylinder fixed on the support plate and located on the left or right side of the conversion disk, and a conical limit head fixed on the telescopic end of the limit cylinder and cooperating with each limit hole. The telescopic end of the limit cylinder is arranged horizontally and perpendicular to the left or right end face of the conversion disk, and the central axis of the conical limit head is parallel to the movement direction of the telescopic end of the limit cylinder.

[0012] Preferably, a countersunk hole for accommodating a drill bit is provided on the left and right outer walls of the positioning protrusion.

[0013] Preferably, a discharging chute is fixed inside the table frame and is arranged obliquely below the conversion plate, and the discharging chute is arranged low at the front and high at the back.

[0014] Preferably, a plurality of grooves uniformly distributed at equal angles along the circumferential direction are formed on the outer circumferential surface of the conversion disk, and the number of the grooves is equal to the number of the positioning protrusions.

[0015] Preferably, a rectangular base is formed downward at the bottom of the positioning protrusion, and the rectangular base on each positioning protrusion is embedded in a corresponding groove.

[0016] Preferably, an open groove is provided on the top of the positioning protrusion, a through hole is provided between the bottom surface of the open groove and the bottom of the rectangular base, and correspondingly, a threaded hole cooperating with the through hole is also provided on the bottom surface of the groove.

[0017] Preferably, a screw is inserted into the through hole, and the threaded end of the screw is inserted into the threaded hole to fix the positioning protrusion in the groove, and the head of the screw is arranged inside the open groove.

[0018] Compared with the prior art, the utility model has the following advantages: the utility model can process two pin holes at one time without the operator having to manually flip and disassemble the tooth tip, thereby greatly simplifying the operation process to achieve the effect of saving time and labor and improving processing efficiency, and can also effectively ensure the concentricity of the pin holes on both sides to reduce processing errors; in addition, the tooth tip can automatically detach from the conversion disk after the drilling step is completed to have an automatic discharge function, thereby further improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a right front side structural diagram of the utility model;

[0020] Figure 2 This is an exploded structural diagram of the conversion disk and the positioning protrusion of the utility model. DETAILED DESCRIPTION

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0023] like Figures 1-2 As shown, a punching tool for an excavator bucket tooth tip includes a table frame 1, a support plate 2 transversely fixed on the top of the table frame 1, and two drilling units 3 arranged on the top of the support plate 2 and respectively distributed oppositely to each other on the left and right sides;

[0024] The drilling unit 3 includes a bottom plate 31 fixed laterally above the support plate 2, an electric slide 32 fixed on the top of the bottom plate 31, a drilling motor 33 fixed on the moving end of the electric slide 32 to have a left-right translation function with the help of the electric slide 32, and a drill bit 34 concentrically and detachably fixed on the rotating shaft of the drilling motor 33;

[0025] A slot 21 is provided in the support plate 2, and the slot 21 is provided between the two drilling units 3;

[0026] It also includes a positioning assembly 4 arranged on the support plate 2, the positioning assembly 4 includes a support frame 41 fixed to the top of the support plate 2, a positioning cylinder 42 fixed to the support frame 41, a pressing block 43 fixed to the telescopic end of the positioning cylinder 42, and a conversion mechanism arranged between the two drilling units 3 and cooperating with the pressing block 43, and the telescopic end of the positioning cylinder 42 is arranged vertically downward;

[0027] The conversion mechanism includes a conversion disk 45 which is vertically and movably inserted in the slot 21 and located below the pressure block 43, a servo reduction motor 44 fixed to the bottom of the support plate 2, and a plurality of detachable positioning protrusions 46 which are fixed on the outer circumferential surface of the conversion disk 45 and uniformly arranged at equal angles along the circumferential direction. The rotating shaft of the servo reduction motor 44 is horizontally arranged and concentrically fixed on the conversion disk 45.

[0028] The number of the positioning protrusions 46 is at least five.

[0029] A plurality of limiting holes 451 are formed between the left and right end surfaces of the conversion disk 45 and are evenly distributed at equal angles along the circumferential direction. The number of the limiting holes 451 is equal to the number of the positioning protrusions 46 .

[0030] The positioning assembly 4 also includes a limit cylinder 47 fixed on the support plate 2 and located on the left or right side of the conversion disk 45, and a conical limit head 48 fixed on the telescopic end of the limit cylinder 47 and cooperating with each limit hole 451. The telescopic end of the limit cylinder 47 is horizontally arranged and perpendicular to the left or right end face of the conversion disk 45, and the central axis of the conical limit head 48 is parallel to the movement direction of the telescopic end of the limit cylinder 47.

[0031] A countersunk hole 461 for accommodating the drill bit 34 is formed on the left and right outer walls of the positioning protrusion 46 .

[0032] A discharging chute 5 is also fixed inside the table frame 1 and is arranged obliquely below the conversion plate 45 . The discharging chute 5 is arranged with the front lower and the rear higher.

[0033] A plurality of grooves 452 are uniformly distributed at equal angles along the circumferential direction on the outer circumferential surface of the conversion disk 45 , and the number of the grooves 452 is equal to the number of the positioning protrusions 46 .

[0034] A rectangular base 462 is formed downward at the bottom of the positioning protrusion 46 , and the rectangular base 462 on each positioning protrusion 46 is embedded in a corresponding groove 452 .

[0035] An opening slot 463 is formed on the top of the positioning protrusion 46 , and a through hole 464 is formed between the bottom surface of the opening slot 463 and the bottom of the rectangular base 462 . Correspondingly, a threaded hole 49 cooperating with the through hole 464 is formed on the bottom surface of the groove 452 .

[0036] A screw 49 is inserted into the through hole 464 . The threaded end of the screw 49 is inserted into the threaded hole 49 to fix the positioning protrusion 46 in the groove 452 . The head of the screw 49 is disposed inside the opening groove 463 .

[0037] The drilling unit 3 further comprises a backing plate 35 which is transversely fixed on the top of the supporting plate 2 and is located below the bottom plate 31 , and four adjustment modules which are arranged between the bottom plate 31 and the backing plate 35 and are symmetrically distributed in pairs.

[0038] The adjustment module includes a stud 36 vertically inserted in the bottom plate 31 and two nuts 37 sleeved and threaded on the stud 36 and respectively pressed against the top and bottom outer walls of the bottom plate 31 . The lower end of the stud 36 is fixed on the pad 35 .

[0039] Working principle:

[0040] The servo reduction motor 44 in the conversion mechanism is started to rotate its rotating shaft, thereby driving the conversion disk 45 to rotate slowly clockwise in the slot 21 (as viewed from the right side view), thereby driving multiple positioning protrusions 46 to operate synchronously in sequence; whenever a positioning protrusion 46 moves to the bottom of the pressure block 43, the servo reduction motor 44 will stop rotating, and at this time, there must be a limit hole 451 located exactly to the left or right of the conical limit head 48, and then, the telescopic end of the limit cylinder 47 is driven to extend outward to drive the conical limit head 48 to move toward the direction of the conversion disk 45 until the conical limit head 48 is inserted into a corresponding limit hole 451, thereby correcting the position of the positioning protrusion 46 located below the pressure block 43 and preventing it from shifting, thereby achieving locking; the area located below the pressure block 43 is called the processing area.

[0041] Take a bucket tooth tip 6 to be processed, and then place it on a positioning protrusion 46 located in front of the pressing block 43, higher than the top of the support plate 2 and closest to the processing area. When placing it, it is necessary to confirm the orientation of the bucket tooth tip 6 so that the positioning cavity at its bottom is just fitted on the positioning protrusion 46.

[0042] The telescopic end of the limit cylinder 47 is driven to retract inward to drive the conical limit head 48 to leave the limit hole 451, and the servo reduction motor 44 is started to continue to rotate a certain angle until the positioning protrusion 46 with the bucket tooth tip 6 is placed moves to the bottom of the pressure block 43. Then, the servo reduction motor 44 is shut down and the telescopic end of the limit cylinder 47 is driven to extend outward to drive the conical limit head 48 to be inserted into the next limit hole 451 to lock it again.

[0043] Next, the telescopic end of the positioning cylinder 42 is driven to extend outward to drive the pressure block 43 to move downward, thereby causing the pressure block 43 to press the bucket tooth tip 6 downward, thereby using the mutual cooperation relationship between the inner wall of the positioning cavity located at the bottom of the bucket tooth tip 6 and the outer wall of the positioning protrusion 46 to press the bucket tooth tip 6 and complete automatic and accurate positioning.

[0044] Then, the moving ends of the electric slides 32 in the two drilling units 3 are driven simultaneously to move toward the bucket tooth tip 6, thereby driving the two drilling motors 33 to move synchronously, and then the two drilling motors 33 are started simultaneously to rotate their rotating shafts, and then with the help of the two rotating drill bits 34, the left and right sides of the bucket tooth tip 6 are drilled at the same time to form two mounting holes 61. After drilling through the inner wall of the positioning cavity, the drill bit 34 will extend into the countersunk hole 461.

[0045] In the above process, the operator places the next bucket tooth tip 6 to be processed on a positioning protrusion 46 located in front of the pressing block 43, higher than the top of the support plate 2 and closest to the processing area.

[0046] After the drilling of the two sides of the bucket tooth tip 6 is completed, the two drilling motors 33 are turned off and the moving ends of the two electric slides 32 are driven to move away from the bucket tooth tip 6 at the same time until the two drill bits 34 leave the two mounting holes 61 respectively.

[0047] Then, according to the same principle, the limit cylinder 47 is unlocked first, and then the servo reduction motor 44 is started to drive the conversion disk 45 to rotate, so that the bucket tooth tip 6 after drilling is rotated to the rear of the pressing block 43. However, since the bucket tooth tip 6 is still higher than the top of the support plate 2 at this time, it will not fall spontaneously.

[0048] By repeating the above steps, each bucket tooth tip 6 can be drilled in turn. When the bucket tooth tip 6 rotates below the horizontal direction after drilling, the bucket tooth tip 6 will slide off the positioning protrusion 46 by its own gravity and fall into the rear end of the discharge chute 5, and then slide forward along the slope of the discharge chute 5 to achieve automatic collection.

[0049] By rotating the two nuts 37 in each adjustment module, the height of the bottom plate 31 can be adjusted or the bottom plate 31 can be leveled, and then the drill bit 34 can be adjusted to a specified height according to the needs of the drilling position.

[0050] The utility model can process two pin holes at one time without the need for the operator to manually flip and disassemble the tooth tip, thereby greatly simplifying the operation process to achieve the effect of saving time and labor and improving the processing efficiency, and can also effectively ensure the concentricity of the pin holes on both sides to reduce the processing error; in addition, the tooth tip can automatically detach from the conversion disk 45 after the drilling step is completed to have an automatic discharge function, thereby further improving the processing efficiency.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A punching tool for an excavator bucket tooth tip, comprising a table frame, a support plate transversely fixed on the top of the table frame, and two drilling units arranged on the top of the support plate and respectively distributed oppositely to each other on the left and right sides, characterized in that: The drilling unit comprises a bottom plate fixed laterally above the supporting plate, an electric slide fixed on the top of the bottom plate, a drilling motor fixed on the moving end of the electric slide to have a left-right translation function with the help of the electric slide, and a drill bit concentrically and detachably fixed on the rotating shaft of the drilling motor; A slot is provided in the support plate, and the slot is provided between the two drilling units; It also includes a positioning assembly arranged on the support plate, the positioning assembly includes a support frame fixed on the top of the support plate, a positioning cylinder fixed on the support frame, a pressure block fixed on the telescopic end of the positioning cylinder, and a conversion mechanism arranged between the two drilling units and cooperating with the pressure block, the telescopic end of the positioning cylinder is arranged vertically downward; The conversion mechanism includes a conversion disk that is vertically and movably inserted in the slot and located below the pressure block, a servo reduction motor fixed to the bottom of the support plate, and a plurality of detachable positioning protrusions fixed to the outer circumferential surface of the conversion disk and evenly arranged at equal angles along the circumferential direction. The rotating shaft of the servo reduction motor is horizontally arranged and concentrically fixed on the conversion disk.

2. The punching tool for an excavator bucket tooth tip according to claim 1, characterized in that: The number of the positioning protrusions is at least 5.

3. The punching tool for an excavator bucket tooth tip according to claim 1, characterized in that: A plurality of limiting holes uniformly distributed at equal angles along the circumferential direction are provided between the left and right end surfaces of the conversion disk, and the number of the limiting holes is equal to the number of the positioning protrusions.

4. The punching tool for an excavator bucket tooth tip according to claim 3, characterized in that: The positioning assembly also includes a limit cylinder fixed on the support plate and located on the left or right side of the conversion disk, and a conical limit head fixed on the telescopic end of the limit cylinder and cooperating with each limit hole. The telescopic end of the limit cylinder is horizontally arranged and perpendicular to the left or right end surface of the conversion disk, and the central axis of the conical limit head is parallel to the movement direction of the telescopic end of the limit cylinder.

5. The punching tool for an excavator bucket tooth tip according to claim 1, characterized in that: A countersunk hole for accommodating a drill bit is provided on the outer walls on both sides of the positioning protrusion.

6. The punching tool for an excavator bucket tooth tip according to claim 1, characterized in that: A discharging chute which is tilted and arranged below the conversion plate is also fixed inside the table frame, and the discharging chute is arranged with a lower front and a higher rear.

7. The punching tool for an excavator bucket tooth tip according to claim 1, characterized in that: The outer circumferential surface of the conversion disk is provided with a plurality of grooves evenly distributed at equal angles along the circumferential direction, and the number of the grooves is equal to the number of the positioning protrusions.

8. The punching tool for an excavator bucket tooth tip according to claim 7, characterized in that: A rectangular base is formed downward at the bottom of the positioning protrusion, and the rectangular base on each positioning protrusion is embedded in a corresponding groove.

9. The punching tool for an excavator bucket tooth tip according to claim 8, characterized in that: An open groove is provided on the top of the positioning protrusion, a through hole is provided between the bottom surface of the open groove and the bottom of the rectangular base, and correspondingly, a threaded hole matching the through hole is also provided on the bottom surface of the groove.

10. The punching tool for an excavator bucket tooth tip according to claim 9, characterized in that: A screw is also inserted into the through hole, and the threaded end of the screw is inserted into the threaded hole to fix the positioning protrusion in the groove, and the head of the screw is arranged inside the open groove.

Images