Portable electric backhoe vehicle

Abstract

The application discloses a portable electric grab vehicle, which comprises a horizontal base, an arc-shaped support fixedly connected to the horizontal base, and a circular rod, wherein the arc-shaped support comprises an arc-shaped connecting rod and the circular rod; the arc-shaped connecting rod is provided with a limiting hole; the horizontal base is further provided with a placing platform hingedly connected to the horizontal base; the placing platform is provided with a lock catch assembly; the end of the placing platform is provided with a locking device for limiting the rotation of the placing platform; the locking device comprises a push block and a bolt, and the bolt can be extended and retracted relative to the limiting hole when the push block is pushed; the horizontal base, the arc-shaped support and the placing platform are mutually spliced to form a stable support structure; the arc-shaped connecting rod is further provided with a handle assembly rotatably connected to the arc-shaped connecting rod; and an angle adjusting device is arranged between the handle assembly and the arc-shaped connecting rod. The application can stably maintain the inclination angle of the placing platform through the locking device; the horizontal base, the arc-shaped support and the placing platform are mutually spliced to form a support structure, and the support structure is stable and reliable, so that the electric grab can be reliably maintained at a corresponding inclination angle for working.

Description

Technical Field

[0001] This invention belongs to the field of electric pick locomotive technology, specifically relating to a portable electric pick locomotive. Background Technology

[0002] Electric picks are common power tools, typically used for hammering and chiseling the ground. During actual hammering, the electric pick needs to be moved synchronously. Therefore, the electric pick is placed on a portable electric pick trolley for easy relocation of the work area. Currently available electric pick trolleys usually include a frame with a locking mechanism to secure the electric pick; the frame also has a roller assembly hinged to it, facilitating frame movement. In practice, it's often necessary to adjust the impact angle of the electric pick. To adjust this angle, a pneumatic spring is usually installed between the frame and the roller assembly. The extension and retraction of the pneumatic spring changes the tilt angle between the frame and the roller assembly. Because the electric pick exerts a significant impact force, this force acts on the pneumatic spring. Since the two ends of the pneumatic spring are hinged to the frame and the roller assembly respectively, the hinge points often experience considerable vibration. After prolonged use, the extension rod of the pneumatic spring is prone to damage, making it impossible to properly switch the frame's tilt angle, resulting in poor reliability of the electric pick trolley. Therefore, a portable electric pick trolley needs to be designed to overcome these difficulties. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing a portable electric pick locomotive. The invention uses a locking device to stably maintain the tilt angle of the placement platform; a support structure is formed by splicing together a horizontal base, an arc-shaped bracket, and the placement platform. The support structure is stable and reliable, thereby enabling the electric pick to reliably maintain the corresponding tilt angle during operation.

[0004] The objective of this invention is achieved through the following technical solution: a portable electric pick trolley, comprising a horizontal base, an arc-shaped bracket fixedly connected to the horizontal base, the arc-shaped bracket including paired arc-shaped connecting rods, with a round rod for fixing between the arc-shaped connecting rods; the arc-shaped connecting rods having a plurality of annularly evenly distributed limiting holes; the horizontal base also having a placement platform hinged thereto, the placement platform having a locking assembly for mounting the electric pick; the end of the placement platform having a locking device for restricting the rotation of the placement platform, the locking device including a push block and a pin, the pin being able to extend and retract relative to the limiting holes when the push block is pushed; the horizontal base, the arc-shaped bracket, and the placement platform being spliced ​​together to form a stable support structure; the arc-shaped connecting rods also having a handle assembly rotatably connected thereto, the handle assembly having an angle adjustment device between it and the arc-shaped connecting rods.

[0005] Preferably, the locking device further includes a return spring, a positioning pin, and a guide tube; the free end of the placement platform is hollow, the guide tube is fixedly installed on the placement platform and extends out from the two side walls of the placement platform; the pin is coaxially installed in the guide tube, the pin is provided with a push block fixedly connected to it, and a positioning pin is provided between the pin and the push block to fix the two; the pins are arranged in pairs, and a return spring is provided between the two pins; the top end face of the placement platform is provided with a clearance hole for placing the push block, and the pin extends and retracts along the guide tube when the push block is pushed horizontally.

[0006] By default, the locking device is locked, with the pin engaged in the corresponding limiting hole and the return spring compressed, preventing the placement platform from rotating relative to the horizontal base. To rotate the placement platform, the locking device must be switched to the unlocked state. The operator simultaneously clamps both push blocks, causing them to move closer together. As the push blocks approach, the pins also move closer together and disengage from the limiting holes, further compressing the return spring. Once the placement platform is no longer limited by the pins, it can rotate. The tilt angle of the placement platform is adjusted according to the required impact angle of the electric hammer. Simultaneously, the guide tube is aligned with the corresponding limiting hole. Then, the push blocks are released, and the pins automatically engage with the adjacent limiting hole under the action of the return spring, locking the device. At this point, the horizontal base, arc-shaped support, and placement platform form a stable support structure, preventing relative rotation. This provides good support for the placement platform, ensuring the electric hammer remains stable at the adjusted impact angle.

[0007] Preferably, the end of the guide tube is fitted against the side wall of the arc-shaped connecting rod; the pin is a columnar body, and the outer contour of the pin matches the outer contour of the limiting hole; the outer diameter of the guide tube is larger than the inner diameter of the limiting hole; the clearance hole is a strip-shaped hole, and the two ends of the return spring abut against the adjacent pins; the push block has a first step, which is located above the return spring; the positioning pin is arranged radially along the guide tube and extends axially along the clearance hole. The clearance hole facilitates the movement of the push block; the outer diameter of the guide tube is larger than the inner diameter of the limiting hole, so the guide tube and the limiting hole will not interfere with each other. The first step on the push block prevents the return spring from detaching from the guide tube.

[0008] Preferably, the free end of the placement platform is provided with a handle assembly fixedly connected thereto. The handle assembly includes a connecting bracket and a columnar handle. The connecting bracket is fixedly connected to the placement platform, and the columnar handle is rotatably connected to the connecting bracket.

[0009] By setting up a handle assembly, the placement platform can be easily pulled. The handle assembly is located at the free end of the placement platform, making it easier for the operator to rotate the placement platform using the handle assembly.

[0010] Preferably, the angle adjustment device includes a first locking seat, a second locking seat, a locking nut, a washer, a connecting pin, a rotary switch, and a buffer; the arc-shaped connecting rod is provided with a mounting cavity for installing the angle adjustment device, and the first locking seat is snap-fitted to the arc-shaped connecting rod; the end of the handle assembly is provided with a second locking seat fixedly connected thereto, the first locking seat and the second locking seat are arranged adjacent to each other, and both the first locking seat and the second locking seat are provided with interlocking locking teeth; the connecting pin is inserted and installed on the arc-shaped connecting rod, one end of the connecting pin is provided with a locking nut threaded thereto, and the other end of the connecting pin is provided with a rotary switch fixedly connected thereto; the buffer, washer, first locking seat and second locking seat are sequentially sleeved on the connecting pin.

[0011] By default, the locking teeth on the first and second locking seats are engaged, preventing them from rotating relative to each other. Since the first locking seat is latched onto the arc-shaped connecting rod, and the first locking seat and the arc-shaped connecting rod cannot rotate relative to each other, the second locking seat cannot rotate relative to the arc-shaped connecting rod. Consequently, the handle assembly, fixedly connected to the second locking seat, cannot rotate relative to the arc-shaped connecting rod, thus maintaining the handle assembly stably at the corresponding height. When adjusting the tilt angle of the handle assembly, rotate the rotary switch away from the second locking seat, then pull the second locking seat away from the first locking seat. At this point, the handle assembly can rotate freely. Then, adjust the tilt angle of the handle assembly according to the actual usage conditions, and push the second locking seat closer to the first locking seat. When the locking teeth on the first and second locking seats are engaged, rotate the rotary switch in the opposite direction to lock the second locking seat, preventing the handle assembly from rotating. Therefore, by setting an angle adjustment device, the tilt angle of the handle assembly can be easily adjusted to accommodate operators of different heights, providing excellent versatility.

[0012] Preferably, the inner walls of the arc-shaped connecting rods of the buffer are fitted together, and the washer is fitted together with the buffer; the end of the first locking seat facing away from the second locking seat is fitted with the washer; the end of the first locking seat facing the washer has a first protrusion, which is disposed in the hole of the washer; the end of the first locking seat facing away from the first protrusion has a first groove, and the end of the second locking seat facing the first locking seat has a second protrusion; the outer contour of the first groove matches the outer contour of the second protrusion, and the second protrusion is inserted into the first groove; the second locking seat is sleeved on the connecting pin and can slide relative to its axial direction.

[0013] Because a buffer is provided between the first locking seat and the arc-shaped connecting rod, the vibration amplitude of the second locking seat can be reduced. When the electric hammer is in impact operation, the operator can better grip the handle assembly, reducing vibration and improving the user experience. By setting the first protrusion, the second protrusion, and the first groove, the first and second locking seats have better concentricity, making their connection more stable and ensuring that the handle assembly can reliably maintain the corresponding tilt angle.

[0014] Preferably, a foot pedal is provided between the two arc-shaped connecting rods to fix them together. The foot pedal has several evenly distributed anti-slip protrusions. The foot pedal is inclined at an angle to the horizontal base. The arc-shaped connecting rod is bent toward the horizontal base. The axial width of the arc-shaped connecting rod along the horizontal base gradually increases from top to bottom. The round rod is installed at the top of the arc-shaped connecting rod, and the foot pedal is located at the bottom of the arc-shaped connecting rod.

[0015] The design allows users to easily adjust the tilt angle of the horizontal base using a foot pedal, enabling the hammer head to quickly move away from the work area and facilitating hammer relocation. Typically, when raising the hammer, operators press down on the handle assembly and simultaneously step on the foot pedal; this requires less effort to press down the handle assembly and allows the hammer head to rise quickly. The arc-shaped connecting rod gradually increases in width along the axial direction of the horizontal base from top to bottom, resulting in a lower overall center of gravity and more stable support.

[0016] Preferably, the horizontal base is provided with a roller assembly rotatably connected thereto; the roller assembly includes a roller body and a drive pin, the drive pin is fixedly connected to the horizontal base, and the roller body is mounted on both ends of the drive pin and rotatably connected thereto. By setting up the roller assembly, the horizontal base can be moved easily, thus allowing for quick transfer of the electric pick and making the process of pushing the electric pick less strenuous.

[0017] Preferably, the locking assembly includes a first connecting rod, a first locking buckle, a second locking buckle, a third locking buckle, and a placement base; the two ends of the placement platform are respectively provided with a mounting plate and a placement base, with the mounting plate positioned near the top of the arc-shaped connecting rod; the mounting plate is provided with an oblong hole for mounting the first connecting rod, the first connecting rod being inserted into the oblong hole, and a first fastener fixing the first connecting rod and the mounting plate is provided between the two; the end of the first connecting rod is provided with a first locking buckle fixedly connected thereto, the second locking buckle being detachably connected to the first locking buckle, and a second fastener fixing the first locking buckle and the second locking buckle is provided between the two; the placement base is provided with a third locking buckle detachably connected thereto, and a third fastener fixing the third locking buckle and the placement base is provided between the third locking buckle and the placement base.

[0018] The oblong hole on the mounting plate allows for easy adjustment of the distance between the first connecting rod and the placement platform, thus facilitating the adjustment of the distance between the hammer handle and the placement platform. The hammer handle is secured between the first and second locking latches, thus fixing one end of the hammer. The hammer head is then placed in the placement base, where the groove matches the hammer's outline, and secured by the third locking latch, thus maintaining the other end of the hammer in place. Therefore, this locking assembly allows for convenient detachable mounting of the hammer onto the support platform.

[0019] Preferably, the angle between the placement platform and the horizontal base is adjustable in the range of 15-70 degrees, and the angle between the handle assembly and the arc-shaped connecting rod is adjustable in the range of 0-90 degrees.

[0020] Compared with existing technologies, this invention has the following advantages: By setting a placement platform hinged to a horizontal base, the impact angle of the electric hammer can be easily adjusted by rotating the platform. A locking device is installed on the placement platform, which locks the platform by engaging a pin with a limiting hole on the arc-shaped bracket, thus maintaining the platform stably at the corresponding tilt angle. The locking device includes a push block, a pin, and a return spring, making unlocking and locking convenient. When the locking device is locked, the horizontal base, arc-shaped bracket, and placement platform are interlocked to form a stable support structure with three sides, making the support structure more stable and reliable, and improving the support effect of the electric hammer. Simultaneously, the curved connecting rod on the arc-shaped bracket is more ergonomic, preventing interference between the operator and the arc-shaped bracket during operation and providing a larger operating space. Furthermore, a handle assembly is rotatably connected to the arc-shaped connecting rod, and the tilt angle of the handle assembly can be adjusted by an angle adjustment device, making it suitable for operators of different heights and providing excellent versatility. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is the front view of the present invention; Figure 4 This is a perspective view of the platform after the angle of the present invention has been adjusted; Figure 5 This is a perspective view of the invention from another angle; Figure 6 This is a diagram of the internal structure of the locking device; Figure 7 This is a diagram showing the internal structure of the angle adjustment device; Figure 8 for Figure 7 A magnified view of a portion of position A in the middle; Markings in the diagram: 1. Horizontal base; 2. Arc-shaped bracket; 21. Arc-shaped connecting rod; 22. Round rod; 23. Limiting hole; 24. Mounting cavity; 25. Foot pedal; 26. Anti-slip protrusion; 3. Placement platform; 4. Locking assembly; 41. First connecting rod; 42. First lock; 43. Second lock; 44. Third lock; 45. Placement base; 46. Mounting plate; 47. Oblong hole; 48. First fastener; 49. Second fastener; 410. Third fastener; 5. Locking device; 51. Push block; 52. Pin; 53. Reverse... 54. Positioning spring; 55. Positioning pin; 56. Guide tube; 57. First step; 6. Handle assembly; 78. Angle adjustment device; 79. First locking seat; 70. Second locking seat; 71. Locking nut; 72. Washer; 73. Connecting pin; 74. Rotary switch; 75. Buffer; 76. First protrusion; 77. First groove; 78. Second protrusion; 99. Clearance hole; 10. Handle assembly; 110. Connecting bracket; 12. Columnar handle; 13. Locking tooth; 14. Roller assembly; 15. Roller body; 16. Drive pin. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments illustrated in the accompanying drawings: like Figures 1 to 8 As shown, this embodiment discloses a portable electric pick rig, including a horizontal base 1, an arc-shaped bracket 2 fixedly connected to the horizontal base 1, the arc-shaped bracket 2 including a pair of arc-shaped connecting rods 21, and a round rod 22 for fixing between the arc-shaped connecting rods 21; the arc-shaped connecting rods 21 are provided with a plurality of annularly evenly distributed limiting holes 23; the horizontal base 1 is also provided with a placement platform 3 hinged to it, the placement platform 3 is provided with a locking assembly 4 for mounting the electric pick; the end of the placement platform 3 is provided with a locking device 5 for restricting the rotation of the placement platform 3, the locking device 5 including a push block 51 and a pin 52, the pin 52 can extend and retract relative to the limiting holes 23 when the push block 51 is pushed; the horizontal base 1, the arc-shaped bracket 2 and the placement platform 3 are spliced ​​together to form a stable support structure; the arc-shaped connecting rods 21 are also provided with a handle assembly 6 rotatably connected to them, and an angle adjustment device 7 is provided between the handle assembly 6 and the arc-shaped connecting rods 21.

[0023] The locking device 5 further includes a return spring 53, a positioning pin 54, and a guide tube 55; the free end of the placement platform 3 is hollow, and the guide tube 55 is fixedly installed on the placement platform 3 and extends out from the two side walls of the placement platform 3; the pin 52 is coaxially installed inside the guide tube 55, and the pin 52 is provided with a push block 51 fixedly connected to it, and a positioning pin 54 is provided between the pin 52 and the push block 51 to fix the two; the pins 52 are arranged in pairs, and a return spring 53 is provided between the two pins 52; the top end face of the placement platform 3 is provided with a clearance hole 8 for placing the push block 51, and the pin 52 extends and retracts along the guide tube 55 when the push block 51 is pushed horizontally. The end of the guide tube 55 is fitted against the side wall of the arc-shaped connecting rod 21; the pin 52 is a columnar body, and the outer contour of the pin 52 matches the outer contour of the limiting hole 23. The outer diameter of the guide tube 55 is larger than the inner diameter of the limiting hole 23; the clearance hole 8 is a strip-shaped hole, and the two ends of the return spring 53 abut against the adjacent pin 52; the push block 51 is provided with a first step 56, which is located above the return spring 53; the positioning pin 54 is arranged radially along the guide tube 55 and extends axially along the clearance hole 8. The free end of the placement platform 3 is provided with a handle assembly 9 fixedly connected to it. The handle assembly 9 includes a connecting bracket 91 and a columnar handle 92; the connecting bracket 91 is fixedly connected to the placement platform 3, and the columnar handle 92 is rotatably connected to the connecting bracket 91.

[0024] The angle adjustment device 7 includes a first locking seat 71, a second locking seat 72, a locking nut 73, a washer 74, a connecting pin 75, a rotary switch 76, and a buffer 77. The arc-shaped connecting rod 21 is provided with a mounting cavity 24 for mounting the angle adjustment device 7. The first locking seat 71 is snapped into the arc-shaped connecting rod 21. The end of the handle assembly 6 is provided with a second locking seat 72 fixedly connected to it. The first locking seat 71 and the second locking seat 72 are arranged adjacent to each other. Both the first locking seat 71 and the second locking seat 72 are provided with interlocking locking teeth 10. The connecting pin 75 is inserted and installed on the arc-shaped connecting rod 21. One end of the connecting pin 75 is provided with a locking nut 73 threadedly connected to it, and the other end of the connecting pin 75 is provided with a rotary switch 76 fixedly connected to it. The buffer 77, the washer 74, the first locking seat 71, and the second locking seat 72 are sequentially sleeved on the connecting pin 75. The inner walls of the arc-shaped connecting rod 21 of the buffer member 77 are fitted together, and the washer 74 is fitted together with the buffer member 77; the end of the first locking seat 71 facing away from the second locking seat 72 is fitted with the washer 74; the end of the first locking seat 71 facing the washer 74 has a first protrusion 78, which is located in the hole of the washer 74; the end of the first locking seat 71 facing away from the first protrusion 78 has a first groove 79, and the end of the second locking seat 72 facing the first locking seat 71 has a second protrusion 710; the outer contour of the first groove 79 matches the outer contour of the second protrusion 710, and the second protrusion 710 is inserted into the first groove 79; the second locking seat 72 is sleeved on the connecting pin 75 and can slide relative to its axial direction.

[0025] A foot pedal 25 is provided between the two arc-shaped connecting rods 21 to fix them together. The foot pedal 25 has several evenly distributed anti-slip protrusions 26. The foot pedal 25 is inclined at an angle to the horizontal base 1. The arc-shaped connecting rods 21 are bent toward the horizontal base 1, and the axial width of the arc-shaped connecting rods 21 along the horizontal base 1 gradually increases from top to bottom. The round rod 22 is installed at the top of the arc-shaped connecting rods 21, and the foot pedal 25 is located at the bottom of the arc-shaped connecting rods 21. A roller assembly 11 is provided on the horizontal base 1 and is rotatably connected thereto. The roller assembly 11 includes a roller body 111 and a transmission pin 112. The transmission pin 112 is fixedly connected to the horizontal base 1, and the roller body 111 is installed at both ends of the transmission pin 112 and is rotatably connected thereto. The locking assembly 4 includes a first connecting rod 41, a first latch 42, a second latch 43, a third latch 44, and a placement base 45. The placement platform 3 has a mounting plate 46 and a placement base 45 at both ends, with the mounting plate 46 positioned near the top of the arc-shaped connecting rod 21. The mounting plate 46 has an oblong hole 47 for mounting the first connecting rod 41, which is inserted into the oblong hole 47. A first fastener 48 is provided between the first connecting rod 41 and the mounting plate 46 to fix them together. The end of the first connecting rod 41 has a first latch 42 fixedly connected to it. The second latch 43 is detachably connected to the first latch 42. A second fastener 49 is provided between the first latch 42 and the second latch 43 to fix them together. The placement base 45 has a third latch 44 detachably connected to it. A third fastener 410 is provided between the third latch 44 and the placement base 45 to fix them together. The angle between the placement platform 3 and the horizontal base 1 is adjustable from 15 to 70 degrees, and the angle between the handle assembly 6 and the arc-shaped connecting rod 21 is adjustable from 0 to 90 degrees.

[0026] The specific operation process of this embodiment is as follows: Before construction, the electric pick is fixed to the placement platform 3 by the locking assembly 4; then the electric pick is moved to the corresponding construction area by the roller assembly 11, and the tilt angle of the placement platform 3 is adjusted according to the actual situation so that the electric pick is at an impact angle that is easy to operate; in the default state, the locking device 5 is in the locked state, at which time the pin 52 is stuck in the corresponding limiting hole 23, the return spring 53 is in the compressed state, and the placement platform 3 cannot rotate relative to the horizontal base 1; when it is necessary to rotate the placement platform 3, the locking device 5 must be switched to the unlocked state. The operator simultaneously clamps the two push blocks 51, and the push blocks 51 will move closer to each other; when the push blocks 51 move closer to each other, the pins 52 will also move closer to each other, and the pins 52 will disengage from the limiting hole 23, at which time the return spring 53 is further compressed. Once the placement platform 3 is no longer limited by the pin 52, it can rotate. Adjust the tilt angle of the placement platform 3 according to the actual impact angle required by the electric hammer. Simultaneously, align the guide tube 55 with the corresponding limiting hole 23, then release the push block 51. Under the action of the return spring 53, the pin 52 will automatically engage with the adjacent limiting hole 23, thus locking the locking device 5. At this point, the horizontal base 1, the arc-shaped bracket 2, and the placement platform 3 form a stable support structure. The horizontal base 1, the arc-shaped bracket 2, and the placement platform 3 cannot rotate relative to each other, resulting in good support from the placement platform 3 and ensuring the electric hammer remains stable at the adjusted impact angle.

[0027] After adjusting the tilt angle of the placement platform 3, the tilt angle of the handle assembly 6 is then adjusted using the angle adjustment device 7 to accommodate the operator's height, allowing the operator to work without bending over. In the default state, the locking teeth 10 on the first locking seat 71 and the second locking seat 72 are engaged, preventing them from rotating relative to each other. Since the first locking seat 71 is snapped onto the arc-shaped connecting rod 21, and the first locking seat 71 and the arc-shaped connecting rod 21 cannot rotate relative to each other, the second locking seat 72 cannot rotate relative to the arc-shaped connecting rod 21. Consequently, the handle assembly 6, which is fixedly connected to the second locking seat 72, cannot rotate relative to the arc-shaped connecting rod 21, thus ensuring that the handle assembly 6 remains stably at the corresponding height. When it is necessary to adjust the tilt angle of the handle assembly 6, rotate the rotary switch 76 away from the second locking seat 72, and then pull the second locking seat 72 to disengage it from the first locking seat 71. At this point, the handle assembly 6 can rotate freely. Then, adjust the tilt angle of the handle assembly 6 according to the actual working conditions, and push the second locking seat 72 closer to the first locking seat 71. When the locking teeth 10 on the first locking seat 71 and the locking teeth 10 on the second locking seat 72 are engaged, rotate the rotary switch 76 in the opposite direction to lock the second locking seat 72, thus preventing the handle assembly 6 from rotating. Therefore, by setting the angle adjustment device 7, the tilt angle of the handle assembly 6 can be easily adjusted to accommodate operators of different heights, providing excellent versatility.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A portable electric pickaxe vehicle, comprising a horizontal base (1), characterized in that, A horizontal base (1) is provided with an arc-shaped bracket (2) fixedly connected to it. The arc-shaped bracket (2) includes a pair of arc-shaped connecting rods (21), and a round rod (22) for fixing is provided between the arc-shaped connecting rods (21). The arc-shaped connecting rods (21) are provided with a number of annularly distributed limiting holes (23). The horizontal base (1) is also provided with a placement platform (3) hinged to it. The placement platform (3) is provided with a locking assembly (4) for installing an electric pick. The end of the placement platform (3) is provided with a locking device (5) to restrict the rotation of the placement platform (3). The locking device (5) includes a push block (51) and a pin (52). When the push block (51) is pushed, the pin (52) can be positioned relative to the limiting hole (23). 3) Telescopic; the horizontal base (1), the arc-shaped bracket (2) and the placement platform (3) are spliced ​​together to form a stable support structure; the arc-shaped connecting rod (21) is also provided with a handle assembly (6) rotatably connected to it, and an angle adjustment device (7) is provided between the handle assembly (6) and the arc-shaped connecting rod (21); the locking device (5) also includes a return spring (53), a positioning pin (54) and a guide tube (55); the free end of the placement platform (3) is hollow, and the guide tube (55) is fixedly installed on the placement platform (3) and passes through the two side walls of the placement platform (3); the pin (52) is coaxially installed in the guide tube (55), and the pin (52) is provided with a fixed connection to it. A positioning pin (54) is provided between the push block (51) and the pin (52) to fix the two; the pins (52) are arranged in pairs, and a return spring (53) is provided between the two pins (52); the top end face of the placement platform (3) is provided with a clearance hole (8) for placing the push block (51), and the pin (52) extends and retracts along the guide tube (55) when the push block (51) is pushed horizontally; the end of the guide tube (55) is fitted to the side wall of the arc-shaped connecting rod (21); the pin (52) is a columnar body, and the outer contour of the pin (52) matches the outer contour of the limiting hole (23), and the outer diameter of the guide tube (55) is larger than the inner diameter of the limiting hole (23); The clearance hole (8) is a strip hole, and the two ends of the return spring (53) abut against the adjacent pin (52); the push block (51) is provided with a first step (56), which is located above the return spring (53); the positioning pin (54) is arranged radially along the guide tube (55), and the positioning pin (54) extends axially along the clearance hole (8); the free end of the placement platform (3) is provided with a handle assembly (9) fixedly connected thereto, the handle assembly (9) includes a connecting bracket (91) and a columnar handle (92); the connecting bracket (91) is fixedly connected to the placement platform (3), and the columnar handle (92) is rotatably connected to the connecting bracket (91).

2. The portable electric pick locomotive according to claim 1, characterized in that, The angle adjustment device (7) includes a first locking seat (71), a second locking seat (72), a locking nut (73), a washer (74), a connecting pin (75), a rotary switch (76), and a buffer (77); the arc-shaped connecting rod (21) is provided with a mounting cavity (24) for mounting the angle adjustment device (7), and the first locking seat (71) is snapped to the arc-shaped connecting rod (21); the end of the handle assembly (6) is provided with a second locking seat (72) fixedly connected to it, and the first locking seat (71) and the second locking seat... (72) Adjacent to each other, the first locking seat (71) and the second locking seat (72) are provided with interlocking locking teeth (10); the connecting pin (75) is inserted and installed on the arc-shaped connecting rod (21), one end of the connecting pin (75) is provided with a locking nut (73) threadedly connected to it, and the other end of the connecting pin (75) is provided with a rotary switch (76) fixedly connected to it; the connecting pin (75) is sequentially fitted with a buffer (77), a washer (74), the first locking seat (71) and the second locking seat (72).

3. The portable electric pick locomotive according to claim 2, characterized in that, The inner walls of the arc-shaped connecting rod (21) of the buffer (77) are fitted together, and the washer (74) is fitted together with the buffer (77); the end of the first locking seat (71) facing away from the second locking seat (72) is fitted together with the washer (74); the end of the first locking seat (71) facing the washer (74) is provided with a first protrusion (78), and the first protrusion (78) is located in the hole of the washer (74); the end of the first locking seat (71) facing away from the first protrusion (78) is provided with a first groove (79), and the end of the second locking seat (72) facing the first locking seat (71) is provided with a second protrusion (710); the outer contour of the first groove (79) matches the outer contour of the second protrusion (710), and the second protrusion (710) is inserted into the first groove (79); the second locking seat (72) is sleeved on the connecting pin (75) and can slide relative to its axial direction.

4. The portable electric pick locomotive according to claim 1, characterized in that, A foot pedal (25) is provided between the two arc-shaped connecting rods (21) to fix them together. The foot pedal (25) is provided with a number of evenly distributed anti-slip protrusions (26). The foot pedal (25) is inclined at an angle to the horizontal base (1). The arc-shaped connecting rod (21) bends toward the horizontal base (1). The axial width of the arc-shaped connecting rod (21) along the horizontal base (1) gradually increases from top to bottom. The round rod (22) is installed on the top of the arc-shaped connecting rod (21). The foot pedal (25) is located at the bottom of the arc-shaped connecting rod (21).

5. The portable electric pick locomotive according to claim 1, characterized in that, The horizontal base (1) is provided with a roller assembly (11) rotatably connected thereto; the roller assembly (11) includes a roller body (111) and a transmission pin (112), the transmission pin (112) is fixedly connected to the horizontal base (1), and the roller body (111) is installed at both ends of the transmission pin (112) and rotatably connected thereto.

6. The portable electric pick locomotive according to claim 1, characterized in that, The locking assembly (4) includes a first connecting rod (41), a first latch (42), a second latch (43), a third latch (44), and a placement base (45); the two ends of the placement platform (3) are respectively provided with a mounting plate (46) and a placement base (45), the mounting plate (46) is located near the top of the arc-shaped connecting rod (21); the mounting plate (46) is provided with an oblong hole (47) for mounting the first connecting rod (41), the first connecting rod (41) is inserted into the oblong hole (47), and the first connecting rod (41) and the mounting plate (45) are connected. 6) A first fastener (48) is provided between the two to fix them together; the end of the first connecting rod (41) is provided with a first latch (42) fixedly connected to it, the second latch (43) is detachably connected to the first latch (42), and a second fastener (49) is provided between the first latch (42) and the second latch (43) to fix them together; a third latch (44) is provided on the placement base (45) and is detachably connected to it, and a third fastener (410) is provided between the third latch (44) and the placement base (45) to fix them together.

7. The portable electric pick locomotive according to claim 1, characterized in that, The angle adjustment range between the placement platform (3) and the horizontal base (1) is 15-70 degrees, and the angle adjustment range between the handle assembly (6) and the arc-shaped connecting rod (21) is 0-90 degrees.

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