Mine blasting drilling equipment

Abstract

The utility model relates to the related technical field of blasting drills, in particular to mine blasting drilling equipment which comprises a bottom plate. An adjusting frame is arranged at the top of the bottom plate, a lifting plate is arranged in the adjusting frame, and a first motor is fixedly connected to the center of the top of the lifting plate. Under the cooperative action of the bottom plate, the adjusting frame, the lifting plate, the first motor, the mounting sleeve, the drill bit body, the through hole and the clamping mechanism, the drill bit dismounting and mounting process is simplified, a user can conveniently and rapidly mount and dismount the drill bit, the user can conveniently take down the drill bit in the device for grinding, and the use efficiency is improved. The problems that although existing mine blasting drilling equipment can temporarily fix a drilling device, the existing mine blasting drilling equipment does not have the function of rapidly disassembling and assembling a drill bit, and under the condition that the drill bit is used for a long time, the drill bit is abraded, so that the drilling efficiency is reduced, and the drill bit needs to be replaced or maintained regularly are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of blasting drill, concretely is a mine blasting drilling equipment. BACKGROUND

[0002] When mining construction is carried out to the mine, the blasting means needs to be used to blast the ore, thereby facilitating the collection of the ore. Before blasting, generally, the drilling of the mining position of the mine is needed, and the fork waist is placed into the drilling hole to blast. However, the mine road condition is relatively complex, and the general large-scale punching machine cannot enter the mine, so the small drilling device is usually used to drill.

[0003] The utility model discloses a kind of mine blasting drilling equipment, belong to the related technical field of blasting drill, to solve the problem that in prior art when drilling, vibration will be generated, and ground on mine is generally not very flat, drilling device can be slid and displaced when drilling vibration, further affect the stability of device, simultaneously possibly cause drilling deviation or the diameter of drilling change, further affect subsequent explosive burying, thereby affect blasting effect, including bottom plate, rectangle mouth is set on bottom plate, both sides of bottom plate top are fixed with support column.The utility model is moved down by hydraulic pump, and then drive fixed plate to move down, so as to drive drill rod and fixed rod to move down, with the working of hydraulic pump, drill rod contacts ground to drill, fixed rod will be inserted into ground when U-shaped plate is blocked, when fixed rod is inserted into ground a part, U-shaped plate is pulled out from limiting groove, fixed rod will not move down, with fixed plate drive drill rod continues to move down, fixed rod will push sliding block in cylindrical groove and extrude spring, and fixed rod will not move up or move down, so as to realize the effect of temporary fixation to drilling device, effectively improve the stability of device when drilling, avoid position deviation when drilling.

[0004] But the above patent still has the following deficiencies: although the patent can temporarily fix the drilling device, it does not have the function of quickly disassembling and assembling the drill bit. Since the drill bit is used for a long time, the drill bit itself is worn out, which reduces the drilling efficiency, and the drill bit needs to be replaced or maintained regularly. UTILITY MODEL CONTENT

[0005] In order to make up for the above deficiencies, the utility model provides a mine blasting drilling equipment to solve the problem that the existing mine blasting drilling equipment can temporarily fix the drilling device, but it does not have the function of quickly disassembling and assembling the drill bit. Since the drill bit is used for a long time, the drill bit itself is worn out, which reduces the drilling efficiency, and the drill bit needs to be replaced or maintained regularly.

[0006] The technical scheme of the utility model discloses

[0007] A mine blasting drilling equipment, including: bottom plate, the top of the bottom plate is provided with the adjusting frame, the inside of the adjusting frame is provided with the lifting plate, the top center of the lifting plate is fixedly connected with the first motor, the output end of the first motor penetrates the lifting plate and extends to the installation sleeve, the installation sleeve is fixedly connected with the output end of the first motor, the bottom of the installation sleeve is provided with the drill bit body, the bottom plate is opened the through hole near the drill bit body, the inside of the installation sleeve is provided with the clamping mechanism that facilitates the disassembly and assembly of the drill bit body, the both sides of the adjusting frame are provided with the self-locking mechanism that adjusts the drilling angle, the both sides of the lifting plate are provided with the power mechanism that controls the lifting plate and lifts.

[0008] Preferably, the clamping mechanism comprises: the inside of the installation sleeve is uniformly provided with six ball grooves, the inside of the ball groove is provided with a steel ball, the extrusion sleeve is slidably connected with the steel ball close to the steel ball, the outer surface of the extrusion sleeve is fixedly connected with the connecting ring, the outer surface of the connecting ring is fixedly connected with the force ring, the installation sleeve is opened the stroke groove close to the connecting ring, the top of the drill bit body is fixedly connected with the plug connector, the plug connector is matched with the installation sleeve, the outer surface of the plug connector is opened the clamping groove, the inner wall of the extrusion sleeve is opened the movable groove, the clamping groove and the movable groove are matched with the steel ball.

[0009] Preferably, the top of the extrusion sleeve is provided with a spring, and the spring is arranged in the inside of the installation sleeve.

[0010] Preferably, the top of the plug connector is fixedly connected with a limiting block, the outer surface of the limiting block is sleeved with a limiting sleeve, and the limiting sleeve is fixedly connected in the inside of the installation sleeve.

[0011] Preferably, the self-locking mechanism comprises: the both sides of the adjusting frame are fixedly connected with the supporting plate, the inside of the supporting plate is rotatably connected with the first rotating shaft, and one end of the first rotating shaft is fixedly connected with the adjusting frame; one end of the first rotating shaft away from the adjusting frame is fixedly connected with the worm wheel, the bottom of the worm wheel is engaged with the worm, the bottom of the worm is engaged with the worm, the inside of the worm is fixedly connected with the second rotating shaft, the both ends of the second rotating shaft are rotatably connected with the fixed block, one side of the fixed block away from the worm is fixedly connected with the second motor, the worm is fixedly connected with the output end of the second motor, and the fixed block is fixedly connected with the bottom plate.

[0012] Preferably, the power mechanism comprises: the two sides of the lifting plate are fixedly connected with threaded sleeves, the interiors of the threaded sleeves are threadedly connected with screw rods, the bottom ends of the screw rods are rotatably connected with connecting blocks, and the connecting blocks are fixedly connected with the adjusting frame; the top ends of the screw rods penetrate through the adjusting frame and extend to first bevel gears, the first bevel gears are fixedly connected with the screw rods respectively, the adjacent sides of the two first bevel gears are engaged with a second bevel gear, a double-shaft motor is arranged between the two second bevel gears, the double-shaft motor is fixedly connected with the adjusting frame, and the two second bevel gears are fixed to the outer surfaces of the two side output ends of the double-shaft motor respectively.

[0013] Preferably, the bottom of the bottom plate is provided with universal wheels with a brake function at four corners, the universal wheels are fixedly connected with the bottom plate, and the top side of the bottom plate is provided with a control box with a storage battery in the interior, and the control box is fixedly connected with the bottom plate.

[0014] Compared with the prior art, the device has the advantages that:

[0015] Firstly, the device simplifies the disassembly and assembly process of the drill bit, facilitates the user to quickly install and disassemble the drill bit, and facilitates the user to take down the drill bit inside the device for polishing, solves the problem that the existing mine blasting drilling equipment can temporarily fix the drilling device, but does not have the function of quickly disassembling and assembling the drill bit, and the drill bit needs to be replaced or maintained regularly due to the wear of the drill bit itself under the condition of long-term use, and reduces the drilling efficiency.

[0016] Secondly, the device can adjust the drilling angle of the device according to the needs of the user, improves the practicability, and solves the problem that the existing mine blasting drilling equipment does not have the function of drilling an inclined hole, so that the user needs to tilt the device as a whole when drilling an inclined hole, which is relatively inconvenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of the mine blasting drilling equipment of the utility model;

[0018] Figure 2 It is a side view sectional structure schematic view of the mine blasting drilling equipment of the utility model;

[0019] Figure 3 It is a self-locking mechanism structure schematic view of the utility model;

[0020] Figure 4 The schematic view of the clamping mechanism structure of the utility model;

[0021] Figure 5 The schematic view of the power mechanism structure of the utility model; Figure 4 The schematic view of the enlarged structure at A in the middle;

[0022] Figure 6 The schematic view of the power mechanism structure of the utility model;

[0023] Figure 7 The schematic view of the connecting structure of the limiting block and the plug connector of the utility model.

[0024] In the drawings:

[0025] 1, bottom plate; 2, adjusting frame; 3, lifting plate; 4, first motor; 5, mounting sleeve; 6, drill bit body; 7, through hole; 8, clamping mechanism; 9, self-locking mechanism; 10, power mechanism; 11, ball groove; 12, steel ball; 13, extrusion sleeve; 14, connecting ring; 15, force ring; 16, stroke groove; 17, plug connector; 18, clamping groove; 19, movable groove; 20, spring; 21, limiting block; 22, limiting sleeve; 23, support plate; 24, first rotating shaft; 25, worm wheel; 26, worm; 27, second rotating shaft; 28, fixed block; 29, second motor; 30, threaded sleeve; 31, screw; 32, connecting block; 33, first bevel gear; 34, second bevel gear; 35, double-shaft motor; 36, universal wheel; 37, control box. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer to Figures 1 to 7 The above technical solutions are described in detail through the following embodiments of the utility model.

[0028] A mine blasting drilling device, comprising a bottom plate 1; the top of the bottom plate 1 is provided with an adjusting frame 2, the inside of the adjusting frame 2 is provided with a lifting plate 3, the top center of the lifting plate 3 is fixedly connected with a first motor 4, the output end of the first motor 4 penetrates through the lifting plate 3 and extends to a mounting sleeve 5, the mounting sleeve 5 is fixedly connected with the output end of the first motor 4, the bottom of the mounting sleeve 5 is provided with a drill bit body 6, and a through hole 7 is formed in the bottom plate 1 close to the drill bit body 6; the inside of the mounting sleeve 5 is provided with a clamping mechanism 8 for facilitating disassembly and assembly of the drill bit body 6; the two sides of the adjusting frame 2 are provided with a self-locking mechanism 9 for adjusting the drilling angle; the two sides of the lifting plate 3 are provided with a power mechanism 10 for controlling the lifting plate 3 to lift and descend, the user moves the device to the mine blasting drilling position, then starts the first motor 4, the output end of the first motor 4 drives the mounting sleeve 5, the mounting sleeve 5 drives the drill bit body 6 to rotate at high speed, then the lifting plate 3 is controlled to move downward by the power mechanism 10, the lifting plate 3 drives the drill bit body 6, so that the drill bit body 6 drills the mine, and the user can disassemble, polish and install the drill bit body 6 through the clamping mechanism 8 when the drill bit body 6 is used for a long time.

[0029] As shown in Figure 4 and Figure 5 , the clamping mechanism 8 comprises: six ball grooves 11 are uniformly formed in the inside of the mounting sleeve 5, steel balls 12 are arranged in the inside of the ball grooves 11, an extrusion sleeve 13 is slidably connected to the mounting sleeve 5 close to the steel balls 12, a connecting ring 14 is fixedly connected to the outer surface of the extrusion sleeve 13, a force ring 15 is fixedly connected to the outer surface of the connecting ring 14, and a stroke groove 16 is formed in the mounting sleeve 5 close to the connecting ring 14; a plug 17 is fixedly connected to the top of the drill bit body 6, the plug 17 is matched with the mounting sleeve 5, a clamping groove 18 is formed in the outer surface of the plug 17, a movable groove 19 is formed in the inner wall of the extrusion sleeve 13, and the clamping groove 18 and the movable groove 19 are matched with the steel balls 12; the user can push the force ring 15 upward, the force ring 15 drives the connecting ring 14, the connecting ring 14 drives the extrusion sleeve 13, the movable groove 19 on the extrusion sleeve 13 moves to the ball groove 11, the movement range of the steel balls 12 is increased, then the drill bit body 6 is pulled, the drill bit body 6 drives the plug 17, the plug 17 is separated from the mounting sleeve 5, the user can polish the drill bit body 6, then the plug 17 on the polished drill bit body 6 is inserted into the inside of the mounting sleeve 5, the force ring 15 is loosened, the extrusion sleeve 13 is reset, the movable groove 19 is separated from the ball groove 11, the steel balls 12 are extruded, a part of the steel balls 12 moves into the clamping groove 18 on the surface of the plug 17, the plug 17 is fixed, and the drill bit body 6 is installed.

[0030] As shown in Figure 5As shown, the top of the pressing sleeve 13 is provided with a spring 20, which is arranged in the inside of the mounting sleeve 5 and can push the pressing sleeve 13 to move downward and reset while the user releases the pressing ring 15.

[0031] As shown in the figure, Figure 4 and Figure 7 As shown, the top of the plug 17 is fixedly connected with a limiting block 21, the outer surface of the limiting block 21 is sleeved with a limiting sleeve 22, the limiting sleeve 22 is fixedly connected to the inside of the mounting sleeve 5, the mounting sleeve 5 drives the limiting sleeve 22 to rotate, the limiting sleeve 22 drives the limiting block 21, and the limiting block 21 drives the drill bit body 6 to rotate through the plug 17.

[0032] As shown in the figure, Figure 3 As shown, the self-locking mechanism 9 comprises: the two sides of the adjusting frame 2 are fixedly connected with support plates 23, the inside of each support plate 23 is rotatably connected with a first rotating shaft 24, one end of each first rotating shaft 24 is fixedly connected with the adjusting frame 2; one end of one first rotating shaft 24 away from the adjusting frame 2 is fixedly connected with a worm gear 25, the bottom of the worm gear 25 is engaged with a worm shaft 26, the bottom of the worm shaft 26 is engaged with the worm gear 26, the inside of the worm shaft 26 is fixedly connected with a second rotating shaft 27, the two ends of the second rotating shaft 27 are rotatably connected with fixed blocks 28, one face of one fixed block 28 away from the worm shaft 26 is fixedly connected with a second motor 29, the worm shaft 26 is fixedly connected with the output end of the second motor 29, and the fixed blocks 28 are fixedly connected with the bottom plate 1; starting the second motor 29, the output end of the second motor 29 drives the second rotating shaft 27, the second rotating shaft 27 drives the worm shaft 26, the worm shaft 26 drives the worm gear 25 to rotate, the worm gear 25 drives the first rotating shaft 24, the first rotating shaft 24 drives the adjusting frame 2 to rotate in a small amplitude through the cooperation of the support plates 23.

[0033] As shown in the figure, Figure 6 As shown, the power mechanism 10 comprises: the two sides of the lifting plate 3 are fixedly connected with threaded sleeves 30, the inside of each threaded sleeve 30 is threadedly connected with a screw rod 31, the bottom end of each screw rod 31 is rotatably connected with a connecting block 32, and the connecting block 32 is fixedly connected with the adjusting frame 2; the top end of each screw rod 31 penetrates through the adjusting frame 2 and extends to a first bevel gear 33, the first bevel gear 33 is fixedly connected with the screw rod 31, the side adjacent to the two first bevel gears 33 is engaged with a second bevel gear 34, a double-shaft motor 35 is arranged between the two second bevel gears 34, the double-shaft motor 35 is fixedly connected with the adjusting frame 2, and the two second bevel gears 34 are respectively fixed to the outer surfaces of the two output ends of the double-shaft motor 35; starting the double-shaft motor 35, the output end of the double-shaft motor 35 drives the second bevel gear 34 to rotate, the second bevel gear 34 drives the first bevel gear 33 to rotate at the same time, the first bevel gear 33 drives the screw rod 31 to rotate, and the screw rod 31 drives the lifting plate 3 to move up and down through the threaded sleeve 30 at the same time, thereby controlling the lifting plate 3 to move up and down.

[0034] As Figure 1 shown, the bottom four corners of the bottom plate 1 are provided with universal wheels 36 with brake function, the universal wheels 36 are fixedly connected with the bottom plate 1, the top side of the bottom plate 1 is provided with a control box 37 with a battery inside, the control box 37 is fixedly connected with the bottom plate 1, the battery can not only provide power for the device, but also can be connected to the power supply through the wire, improving the flexibility of the device, the setting of the universal wheel 36 facilitates the user to move and fix the device.

[0035] Working principle: when the user needs to drill an inclined hole, move the device to the mine blasting drilling site, start the second motor 29, the output end of the second motor 29 drives the second shaft 27, the second shaft 27 drives the worm 26, the worm 26 rotates at the same time drives the worm gear 25, the worm gear 25 drives the first shaft 24, the first shaft 24 drives the adjusting frame 2 through the cooperation of the supporting plate 23, so that the adjusting frame 2 rotates with the first shaft 24 as the center in a small range, then start the first motor 4, the output end of the first motor 4 drives the mounting sleeve 5, the mounting sleeve 5 rotates at the same time drives the limiting sleeve 22, the limiting sleeve 22 drives the limiting block 21, the limiting block 21 drives the drill bit body 6 to rotate through the plug-in head 17, then start the double shaft motor 35, the output end of the double shaft motor 35 drives the second bevel gear 34 to rotate, the second bevel gear 34 rotates at the same time drives the first bevel gear 33, the first bevel gear 33 drives the screw rod 31 to rotate, the screw rod 31 rotates at the same time drives the lifting plate 3 through the threaded sleeve 30, so as to control the lifting plate 3 to move up and down, the lifting plate 3 drives the drill bit body 6, so that the drill bit body 6 drills the mine.

[0036] When it is needed to polish the drill bit body 6, the user can push the force ring 15 upwards, the force ring 15 drives the connecting ring 14, the connecting ring 14 drives the extrusion sleeve 13, so that the movable groove 19 on the extrusion sleeve 13 moves to the ball groove 11, increasing the activity range of the steel ball 12, then pull the drill bit body 6, the drill bit body 6 drives the plug-in head 17, so that the plug-in head 17 is separated from the mounting sleeve 5, the user can polish the drill bit body 6, then insert the plug-in head 17 on the polished drill bit body 6 into the inside of the mounting sleeve 5, loosen the force ring 15, the spring 20 generates elastic recovery, pushes the extrusion sleeve 13 to reset at the same time drives the movable groove 19 to separate from the ball groove 11, and extrudes the steel ball 12, so that part of the steel ball 12 moves into the clamping groove 18 on the surface of the plug-in head 17, so as to fix the plug-in head 17, achieving the purpose of installing the drill bit body 6.

[0037] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A mine blasting drilling equipment, comprising: a bottom plate (1); characterized in that: the top of the bottom plate (1) is provided with an adjusting frame (2), the inside of the adjusting frame (2) is provided with a lifting plate (3), the top center of the lifting plate (3) is fixedly connected with a first motor (4), the output end of the first motor (4) penetrates through the lifting plate (3) and extends to a mounting sleeve (5), the mounting sleeve (5) is fixedly connected with the output end of the first motor (4), the bottom of the mounting sleeve (5) is provided with a drill bit body (6), and the bottom plate (1) is provided with a through hole (7) near the drill bit body (6); The inside of the mounting sleeve (5) is provided with a clamping mechanism (8) for facilitating disassembly and assembly of the drill bit body (6); Both sides of the adjusting frame (2) are provided with a self-locking mechanism (9) for adjusting the drilling angle; Both sides of the lifting plate (3) are provided with a power mechanism (10) for controlling the lifting of the lifting plate (3).

2. A mine blast hole drilling apparatus as claimed in claim 1 wherein: The clamping mechanism (8) comprises: The inside of the mounting sleeve (5) is uniformly provided with six ball grooves (11), the inside of the ball groove (11) is provided with a steel ball (12), the mounting sleeve (5) is slidingly connected with an extrusion sleeve (13) near the steel ball (12), the outer surface of the extrusion sleeve (13) is fixedly connected with a connecting ring (14), the outer surface of the connecting ring (14) is fixedly connected with a force ring (15), and the mounting sleeve (5) is provided with a matching stroke groove (16) near the connecting ring (14); The top of the drill bit body (6) is fixedly connected with a plug (17), the plug (17) is matched with the mounting sleeve (5), the outer surface of the plug (17) is provided with a clamping groove (18), the inner wall of the extrusion sleeve (13) is provided with a movable groove (19), and the clamping groove (18) and the movable groove (19) are matched with the steel ball (12).

3. A mine blast hole drilling apparatus as claimed in claim 2 wherein: The top of the extrusion sleeve (13) is provided with a spring (20), and the spring (20) is arranged in the inside of the mounting sleeve (5).

4. A mine blast hole drilling apparatus as claimed in claim 2 wherein: The top of the plug (17) is fixedly connected with a limiting block (21), the outer surface of the limiting block (21) is sleeved with a limiting sleeve (22), and the limiting sleeve (22) is fixed in the inside of the mounting sleeve (5).

5. A mine blast hole drilling apparatus as claimed in claim 1 wherein: The self-locking mechanism (9) comprises: Both sides of the adjusting frame (2) are fixedly connected with a supporting plate (23), the inside of the supporting plate (23) is rotatably connected with a first rotating shaft (24), and one end of the first rotating shaft (24) is fixedly connected with the adjusting frame (2). One of the first rotation axis (24) is fixedly connected with the worm gear (25) away from one end of the adjusting frame (2), the bottom of the worm gear (25) is engaged with the worm (26), the bottom of the worm (26) is engaged with the worm (26), the inside of the worm (26) is fixedly connected with the second rotation axis (27), both ends of the second rotation axis (27) are rotatably connected with the fixed block (28), one of the fixed block (28) is fixedly connected with the second motor (29) away from the worm (26), the worm (26) and the output end of the second motor (29) are fixedly connected, the fixed block (28) is fixedly connected with the bottom plate (1).

6. A mine blast hole drilling apparatus as claimed in claim 1 wherein: The power mechanism (10) comprises: Both sides of the lifting plate (3) are fixedly connected with the threaded sleeve (30), the inside of the threaded sleeve (30) is threadedly connected with the screw rod (31), the bottom end of the screw rod (31) is rotatably connected with the connecting block (32), the connecting block (32) is fixedly connected with the adjusting frame (2); The top end of the screw rod (31) penetrates through the adjusting frame (2) and extends to the first bevel gear (33), the first bevel gear (33) is fixedly connected with the screw rod (31), the side of the two first bevel gears (33) is engaged with the second bevel gear (34), the double shaft motor (35) is arranged between the two second bevel gears (34), the double shaft motor (35) is fixedly connected with the adjusting frame (2), the two second bevel gears (34) are respectively fixed to the outer surfaces of the two sides of the output end of the double shaft motor (35).

7. A mine blast hole drilling apparatus as claimed in claim 1 wherein: The bottom of the bottom plate (1) is provided with the universal wheel (36) with brake function, the universal wheel (36) is fixedly connected with the bottom plate (1), the top of the bottom plate (1) is provided with the control box (37) with battery inside, the control box (37) is fixedly connected with the bottom plate (1). One of the first rotation axis (24) is fixedly connected with the worm gear (25) away from one end of the adjusting frame (2), the bottom of the worm gear (25) is engaged with the worm (26), the bottom of the worm (26) is engaged with the worm (26), the inside of the worm (26) is fixedly connected with the second rotation axis (27), both ends of the second rotation axis (27) are rotatably connected with the fixed block (28), one of the fixed block (28) is fixedly connected with the second motor (29) away from the worm (26), the worm (26) and the output end of the second motor (29) are fixedly connected, the fixed block (28) is fixedly connected with the bottom plate (1). The power mechanism (10) comprises: Both sides of the lifting plate (3) are fixedly connected with the threaded sleeve (30), the inside of the threaded sleeve (30) is threadedly connected with the screw rod (31), the bottom end of the screw rod (31) is rotatably connected with the connecting block (32), the connecting block (32) is fixedly connected with the adjusting frame (2); The top end of the screw rod (31) penetrates through the adjusting frame (2) and extends to the first bevel gear (33), the first bevel gear (33) is fixedly connected with the screw rod (31), the side of the two first bevel gears (33) is engaged with the second bevel gear (34), the double shaft motor (35) is arranged between the two second bevel gears (34), the double shaft motor (35) is fixedly connected with the adjusting frame (2), the two second bevel gears (34) are respectively fixed to the outer surfaces of the two sides of the output end of the double shaft motor (35). The bottom of the bottom plate (1) is provided with the universal wheel (36) with brake function, the universal wheel (36) is fixedly connected with the bottom plate (1), the top of the bottom plate (1) is provided with the control box (37) with battery inside, the control box (37) is fixedly connected with the bottom plate (1).

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