Groove hole polishing tool for carrier swing arm

Abstract

The utility model relates to a slotted hole polishing tool for a carrier swing arm. Comprising a back plate, two first supporting blocks fixed to the front side of the back plate and arranged up and down, a driving shaft vertically and rotatably connected to the two first supporting blocks in a penetrating and inserting mode, a transmission shaft vertically arranged below the driving shaft and a grinding head concentrically and detachably fixed to the lower end of the transmission shaft, and the upper end of the transmission shaft is connected with the lower end of the driving shaft; a coupling unit is further arranged between the upper end of the transmission shaft and the lower end of the driving shaft and comprises two coupling discs fixed to the upper end of the transmission shaft and the lower end of the driving shaft respectively and a coupling seat arranged between the two coupling discs. A displacement unit is arranged between the upper end of the transmission shaft and the lower end of the driving shaft; according to the utility model, the structure is simplified, the size is reduced, and the manufacturing cost is reduced; in addition, the application range is expanded, so that high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to a slot hole grinding tool for a transport vehicle swing arm. Background Art

[0002] The truck is the simplest, most effective and most common loading, unloading and handling tool among the pallet transport tools in the handling station. It can be divided into manual trucks, semi-electric trucks and full-electric trucks according to the driving mode. Although the manual truck is not highly automated and intelligent, it has made a huge contribution to the transformation from manual handling to mechanized handling. To this day, it still has a certain market share in the truck market; the swing arm of the truck is an important component in the lifting system and is generally made of casting.

[0003] The processing of the swing arm of a transport truck requires multiple steps, including the opening of slots. However, since the inner wall of the processed slots contains many burrs, they must be polished after processing. The polishing process of the swing arm of a transport truck is mostly completed in a matching polishing device.

[0004] The existing grinding device has a complex structure, a large size, and a high production cost, because in addition to installing a motor for driving the grinding head to rotate, a cylinder or an electric slide must be installed for lateral translation of the grinding head, and it must also be equipped with guide accessories such as slide rails; in addition, the existing grinding device has a small scope of application, and most of them are only suitable for slots of a single size specification, and the practicality is poor, which needs further improvement. Utility Model Content

[0005] 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 slot hole grinding tool for the swing arm of a transport vehicle with a simplified structure and reduced volume, while reducing the production cost and expanding the scope of application to have strong practicality.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a slot hole grinding tool for a transport vehicle swing arm, comprising a back plate, two first support blocks fixed to the front side of the back plate and respectively arranged up and down, a vertical and rotatable drive shaft inserted and connected in the two first support blocks, a transmission shaft vertically arranged below the drive shaft, and a grinding head concentrically and detachably fixed to the lower end of the transmission shaft, the upper end of the transmission shaft is connected to the lower end of the drive shaft, and is characterized in that:

[0007] A coupling unit is also provided between the upper end of the transmission shaft and the lower end of the drive shaft, and the coupling unit includes two coupling plates respectively fixed to the upper end of the transmission shaft and the lower end of the drive shaft, and a coupling seat provided between the two coupling plates;

[0008] The two coupling disks are respectively slidably connected to the upper and lower sides of the coupling seat so as to both have the function of laterally sliding relative to the coupling seat, and the sliding directions between the two coupling disks and the coupling seat are perpendicularly arranged;

[0009] A displacement unit is further provided between the upper end of the transmission shaft and the lower end of the driving shaft. The displacement unit includes a second support block fixed to the front side of the back plate, a worm wheel rotatably connected to the front side of the second support block and vertically arranged on the right side of the driving shaft, a traction disk eccentrically fixed to the front end of the worm wheel and vertically arranged, a guide frame fixed to the front side of the back plate and located below the coupling unit, and a traction mechanism arranged between the guide frame and the traction disk. A worm part meshing with the worm wheel is formed on the driving shaft;

[0010] The traction mechanism includes a seat block movably connected in the guide frame and having the function of left - right translation, a sleeve horizontally and rotatably connected to the front side of the back plate and located below the traction disk, and two pull rods symmetrically arranged on the front and rear sides of the guide frame respectively. The transmission shaft is vertically and rotatably inserted and connected in the seat block, and the grinding head is arranged below the guide frame;

[0011] On the upper side of the outer peripheral surface of the sleeve, a first swing arm located in front of the traction disk is formed upward. The end of the first swing arm is rotatably connected to the front side of the traction disk and can relatively slide circumferentially around the center of the traction disk;

[0012] On the lower side of the outer peripheral surface of the sleeve, two second swing arms symmetrically arranged front and rear are formed downward. The right ends of the two pull rods are respectively rotatably connected to the ends of the two second swing arms;

[0013] On the outer walls of the front and rear sides of the seat block, a horizontally arranged connecting block is formed outward respectively. Correspondingly, on the outer walls of the front and rear sides of the guide frame, a horizontally distributed guide groove is opened respectively. The two connecting blocks respectively slide through the two guide grooves and both extend to the outside of the guide frame. The left ends of the two pull rods are respectively rotatably connected to the connecting blocks;

[0014] Preferably, a stroke control module is further provided on both the left and right sides of the seat block. The stroke control module includes a micro - switch arranged inside the guide frame, a knob screw horizontally inserted and screwed on the left or right side of the guide frame, and two guide rods horizontally fixed on the micro - switch and arranged in parallel;

[0015] Preferably, the moving contact of the micro - switch in each stroke control module is arranged towards the seat block. The threaded end of the knob screw is rotatably connected to the micro - switch, and the ends of the two guide rods are respectively inserted and connected to the left or right side of the guide frame.

[0016] Preferably, a plurality of annular adjustment grooves concentrically distributed in sequence from the inside to the outside are formed on the front side of the traction disc. Correspondingly, a horizontally arranged and rotatable roller is further connected to the rear side of the end of the first swing arm, and the roller is rollingly embedded in one of the annular adjustment grooves.

[0017] Preferably, on the end faces of the opposite sides of the two coupling discs, a vertically arranged and mutually perpendicular distributed slider is formed outward. Correspondingly, a mutually perpendicular distributed sliding groove is formed on both the upper and lower sides of the coupling seat.

[0018] Preferably, the slider on the upper coupling disc is slidably embedded in the upper sliding groove, and the slider on the lower coupling disc is slidably embedded in the lower sliding groove.

[0019] Compared with the prior art, the advantages of the present utility model are as follows: The present utility model only needs to install a motor for driving the grinding head to rotate, and can realize the horizontal reciprocating movement of the grinding head by means of the coupling unit and the displacement unit, thereby simplifying the structure and reducing the volume. At the same time, the components in the coupling unit and the displacement unit are easy to process and are relatively common, so the price is lower than that of a cylinder or an electric slide table, etc., thus reducing the manufacturing cost. In addition, the horizontal movement amplitude of the grinding head can be adjusted according to the length of the slot hole to be applicable to slot holes of different sizes and specifications, thereby expanding the scope of application and having strong practicability. Description of the Drawings

[0020] Figure 1 is the left front side exploded structure diagram of the present utility model;

[0021] Figure 2 is the right rear side structure diagram of the worm gear and the traction disc of the present utility model. Detailed Embodiment

[0022] Unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meaning understood by those with ordinary skills in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not represent any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] To keep the following description of the embodiments of the present utility model clear and concise, the detailed descriptions of known functions and known components are omitted in the present utility model.

[0024] As Figures 1 - 2 shown, a slot grinding tool for a swing arm of a handling cart includes a back plate 1, two first support blocks 2 fixedly arranged on the front side of the back plate 1 and arranged vertically one above the other, a driving shaft 3 vertically and rotatably inserted between the two first support blocks 2, a transmission shaft 4 vertically arranged below the driving shaft 3, and a grinding head 5 concentrically and detachably fixed to the lower end of the transmission shaft 4. The upper end of the transmission shaft 4 is connected to the lower end of the driving shaft 3.

[0025] A coupling unit 6 is further arranged between the upper end of the transmission shaft 4 and the lower end of the driving shaft 3. The coupling unit 6 includes two coupling disks 61 respectively fixed to the upper end of the transmission shaft 4 and the lower end of the driving shaft 3, and a coupling seat 62 arranged between the two coupling disks 61.

[0026] The two coupling disks 61 are respectively slidably connected to the upper and lower sides of the coupling seat 62 to both have the function of laterally sliding relative to the coupling seat 62, and the sliding directions between the two coupling disks 61 and the coupling seat 62 are perpendicular to each other.

[0027] A displacement unit 7 is further arranged between the upper end of the transmission shaft 4 and the lower end of the driving shaft 3. The displacement unit 7 includes a second support block 71 fixed to the front side of the back plate 1, a worm wheel 72 rotatably connected to the front side of the second support block 71 and vertically arranged on the right side of the driving shaft 3, a traction disk 73 eccentrically fixed to the front end of the worm wheel 72 and vertically arranged, a guide frame 76 fixed to the front side of the back plate 1 and located below the coupling unit 6, and a traction mechanism arranged between the guide frame 76 and the traction disk 73. A worm part 31 meshing with the worm wheel 72 is formed on the driving shaft 3.

[0028] The traction mechanism includes a seat block 77 movably connected in the guide frame 76 and having the function of left - right translation, a bushing 74 horizontally and rotatably connected to the front side of the back plate 1 and located below the traction disk 73, and two pull rods 75 symmetrically arranged on the front and rear sides of the guide frame 76 respectively. The transmission shaft 4 is vertically and rotatably inserted in the seat block 77, and the grinding head 5 is arranged below the guide frame 76.

[0029] On the upper side of the outer peripheral surface of the bushing 74, a first swing arm 742 located in front of the traction disk 73 is formed upward. The end of the first swing arm 742 is rotatably connected to the front side of the traction disk 73 and can slide relative to the circumference around the center of the traction disk 73.

[0030] On the lower side of the outer peripheral surface of the bushing 74, two second swing arms 741 symmetrically arranged front and rear are formed downward. The right ends of the two pull rods 75 are respectively rotatably connected to the ends of the two second swing arms 741.

[0031] On the outer walls on the front and rear sides of the seat block 77, a horizontally arranged connecting block 771 is formed outward. Correspondingly, on the outer walls on the front and rear sides of the guiding frame 76, a horizontally distributed guiding groove 761 is provided. The two connecting blocks 771 respectively slide through the two guiding grooves 761 and both extend to the outside of the guiding frame 76. The left ends of the two pull rods 75 are respectively rotatably connected to the connecting blocks 771.

[0032] On the left and right sides of the seat block 77, a stroke control module is also provided. The stroke control module includes a microswitch 78 arranged inside the guiding frame 76, a knob screw 79 horizontally inserted and screwed on the left or right side of the guiding frame 76, and two guide rods 710 horizontally fixed on the microswitch 78 and arranged in parallel. The moving contact of the microswitch 78 in each stroke control module is arranged towards the seat block 77. The threaded end of the knob screw 79 is rotatably connected to the microswitch 78. The ends of the two guide rods 710 are respectively inserted and connected to the left or right side of the guiding frame 76.

[0033] On the front side of the traction disc 73, a plurality of concentrically distributed annular adjustment grooves 731 are provided in sequence from the inside to the outside. Correspondingly, on the rear side of the end of the first swing arm 742, a horizontally arranged and rotatable roller 711 is further connected. The roller 711 is rolled and embedded in one of the annular adjustment grooves 731.

[0034] On the end faces of the opposite sides of the two coupling discs 61, a vertically arranged and perpendicularly distributed slider 611 is formed outward. Correspondingly, on the upper and lower sides of the coupling seat 62, a perpendicularly distributed sliding groove 621 is provided.

[0035] The slider 611 on the upper coupling disc 61 slides and is embedded in the upper sliding groove 621, and the slider 611 on the lower coupling disc 61 slides and is embedded in the lower sliding groove 621.

[0036] Working principle:

[0037] Fix the swing arm of the forklift to be processed on the matching fixture and set the slot hole on the swing arm of the forklift upward. Then, with the help of the manipulator, move the back plate 1 above the swing arm of the forklift, so that the grinding head 5 is located directly above the left or right end of the opening of the slot hole. Then, fix a grinding motor on the front side of the back plate 1 and concentrically fix its rotating shaft to the upper end of the driving shaft 3.

[0038] Manipulate the manipulator to drive the grinding head 5 to move vertically downward so that it enters the inner left or right end of the slot hole, and then start the grinding motor to rotate its rotating shaft. Then, drive the worm part 31 to rotate by means of the drive shaft 3, and thus drive the worm wheel 72 to rotate slowly by using the meshing connection relationship between the worm part 31 and the worm wheel 72. Then, drive the traction disc 73 to rotate eccentrically, so that the roller 711 rolls along one of the annular adjustment slots 731, and then drive the end of the first swing arm 742 to swing. Thus, drive the ends of the two second swing arms 741 to swing in the opposite direction by means of the shaft sleeve 74, and then drive the seat block 77 to move left or right in the guide frame 76 by using the rotational connection relationship between the two pull rods 75 and the two connection blocks 771.

[0039] In the above process, since the lower end of the drive shaft 3 is connected to the upper end of the transmission shaft 4 through the coupling unit 6, when the transmission shaft 4 moves left or right following the seat block 77, while the upper coupling disc 61 rotates following the lower end of the drive shaft 3, the slider 611 thereon will slide along a chute 621 above the coupling seat 62, and the slider 611 on the lower coupling disc 61 will also slide along a chute 621 below the coupling seat 62. In this way, the upper coupling disc 61 can drive the lower coupling disc 61 to rotate by means of the coupling seat 62, and at the same time, relative displacement can continuously occur between the two coupling discs 61. Thus, it can not only drive the grinding head 5 to rotate, but also drive the grinding head 5 to move horizontally left or right, and then use the grinding head 5 in the rotating state to comprehensively grind the inner wall of the slot hole back and forth.

[0040] Electrically connect the microswitches 78 in the two stroke control modules to the grinding motor through the control circuit. First, adjust the left and right positions of the two microswitches 78 according to the length of the slot hole. During adjustment, just turn the knob screw 79 by hand to drive the microswitch 78 to slide horizontally along the two guide rods 710 according to the screw connection principle.

[0041] When the seat block 77 moves left, when the grinding head 5 reaches the left end of the slot hole, the left outer wall of the seat block 77 just presses the moving contact of the left microswitch 78. Immediately, the above microswitch 78 will drive the rotating shaft of the grinding motor to reverse through the control circuit, so that the grinding head 5 will not hit the left end of the slot hole, and the grinding head 5 will turn to move right; when the grinding head 5 reaches the right end of the slot hole, the right outer wall of the seat block 77 just presses the moving contact of the right microswitch 78. The above microswitch 78 will drive the rotating shaft of the grinding motor to reverse again in the same way, so that the grinding head 5 will not hit the right end of the slot hole, and the grinding head 5 will turn to move left, and so on.

[0042] In addition, the moving amplitude of the grinding head 5 adjusted by the first swing arm 742 can be adjusted. That is, as long as a suitable annular adjustment groove 731 is selected according to the length of the slot hole, and then the roller 711 provided at the end of the first swing arm 742 is embedded in the selected annular adjustment groove 731.

[0043] For this utility model, only one motor for driving the rotation of the grinding head 5 is needed, and the transverse reciprocating movement of the grinding head 5 can be realized by means of the coupling unit 6 and the displacement unit 7, thus simplifying the structure and reducing the volume. At the same time, the components in the coupling unit 6 and the displacement unit 7 are easy to process and are relatively common, so the price is lower compared with air cylinders or electric sliding tables, etc., thereby reducing the manufacturing cost. In addition, the transverse movement amplitude of the grinding head 5 can be adjusted according to the length of the slot hole to be applicable to slot holes of different size specifications, thus expanding the applicable range and having strong practicability.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A slot grinding tooling for the swing arm of a handling cart, comprising a back plate, two first support blocks fixedly arranged on the front side of the back plate and arranged vertically one above the other, a driving shaft vertically and rotatably inserted and connected between the two first support blocks, a transmission shaft vertically arranged below the driving shaft, and a grinding head concentrically and detachably fixed at the lower end of the transmission shaft. The upper end of the transmission shaft is connected to the lower end of the driving shaft. It is characterized in that: A coupling unit is further arranged between the upper end of the transmission shaft and the lower end of the driving shaft. The coupling unit includes two coupling disks respectively fixed at the upper end of the transmission shaft and the lower end of the driving shaft, and a coupling seat arranged between the two coupling disks; The two coupling disks are respectively slidably connected to the upper and lower sides of the coupling seat to both have the function of laterally sliding relative to the coupling seat, and the sliding directions between the two coupling disks and the coupling seat are perpendicularly arranged; A displacement unit is further arranged between the upper end of the transmission shaft and the lower end of the driving shaft. The displacement unit includes a second support block fixed on the front side of the back plate, a worm gear rotatably connected to the front side of the second support block and vertically arranged on the right side of the driving shaft, a traction disk eccentrically fixed at the front end of the worm gear and vertically arranged, a guide frame fixed on the front side of the back plate and located below the coupling unit, and a traction mechanism arranged between the guide frame and the traction disk. A worm part meshing with the worm gear is formed on the driving shaft; The traction mechanism includes a seat block movably connected in the guide frame and having the function of left - right translation, a sleeve horizontally and rotatably connected to the front side of the back plate and located below the traction disk, and two pull rods symmetrically arranged on the front and rear sides of the guide frame respectively. The transmission shaft is vertically and rotatably inserted and connected in the seat block, and the grinding head is arranged below the guide frame; An upper first swing arm is formed upward on the outer peripheral surface of the upper side of the sleeve and located in front of the traction disk. The end of the first swing arm is rotatably connected to the front side of the traction disk and can relatively slide in a circular motion around the center of the traction disk; Two second swing arms symmetrically arranged front and rear are formed downward on the outer peripheral surface of the lower side of the sleeve. The right ends of the two pull rods are respectively rotatably connected to the ends of the two second swing arms; A horizontally arranged connecting block is formed outward on the outer walls of the front and rear sides of the seat block. Correspondingly, a horizontally distributed guide groove is opened on the outer walls of the front and rear sides of the guide frame. The two connecting blocks respectively slide through the two guide grooves and both extend to the outside of the guide frame. The left ends of the two pull rods are respectively rotatably connected to the connecting blocks; 2. The slot grinding tooling for the swing arm of a handling truck according to claim 1, characterized in that, A travel control module is further arranged on both the left and right sides of the seat block. The travel control module includes a micro - switch arranged inside the guide frame, a knob screw horizontally and inserted and screwed on the left or right side of the guide frame, and two guide rods horizontally fixed on the micro - switch and arranged in parallel; 3. The slot grinding tooling for the swing arm of a forklift according to claim 2, characterized in that, The moving contact of the micro - switch in each travel control module is arranged towards the seat block. The threaded end of the knob screw is rotatably connected to the micro - switch, and the ends of the two guide rods are respectively inserted and connected to the left or right side of the guide frame.

4. A slot grinding tooling for the swing arm of a forklift truck according to claim 1, characterized in that, A plurality of annular adjustment grooves concentrically distributed in sequence from the inside to the outside are formed on the front side of the traction disc. Correspondingly, a laterally arranged and rotatable roller is further connected to the rear side of the end of the first swing arm, and the roller is rollingly embedded in one of the annular adjustment grooves.

5. A slot grinding tooling for the swing arm of a handling vehicle according to claim 1, characterized in that, On the end faces of the two coupling discs on the opposite sides, a vertically arranged and mutually perpendicular distributed slider is formed outward. Correspondingly, a mutually perpendicular distributed sliding groove is formed on both the upper and lower sides of the coupling seat.

6. The slot grinding tooling for the swing arm of a handling cart according to claim 5, characterized in that, The slider on the upper coupling disc is slidably embedded in the upper sliding groove, and the slider on the lower coupling disc is slidably embedded in the lower sliding groove.

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