Detachable power head ear seat and connecting structure thereof

Abstract

This invention discloses a detachable power head lug and its connecting structure. The lug includes a vertical square steel tube. Side upright steel plates are respectively attached and fixed to the outer sides of opposite side plates of the square steel tube. One side of the side upright steel plate extends horizontally beyond the square steel tube, and vertically spaced upper, middle, and lower plate are horizontally connected between the two side upright steel plates extending beyond the square steel tube. Two connecting partitions are vertically connected between the upper and middle plate, parallel to the side upright steel plates and spaced apart between the two side upright steel plates. Lateral connection spaces for the power head are formed between the connecting partitions and adjacent side upright steel plates, and between the two connecting partitions. Horizontal connecting pin holes are formed through the two side upright steel plates and the two connecting partitions. A vertical connecting pin hole is formed through the middle plate between the two connecting partitions. This invention solves the problems of large size, heavy weight, and inconvenient handling of current integrated power head assemblies with side lugs, facilitating transportation and installation.

Description

Technical Field

[0001] This invention belongs to the technical field of ground drive devices for rotary drilling in mining, and specifically relates to a detachable power head lug and its connecting structure. Background Technology

[0002] When drilling for pile holes or taking soil samples to assess geological conditions in mountainous terrain, the drilling equipment must first be transported to the designated work location. The drilling equipment mainly consists of a base assembly, vertical slide rail assembly, power head assembly, diesel power station, and winch. Due to the inherent limitations of transporting the entire machine in mountainous terrain, it is necessary to disassemble the major components, transport them to the designated work location, and then reassemble them before drilling operations can commence. The vertical slide rail assembly is mounted and connected to the base assembly, while the power head assembly is hoisted and slidably connected to the vertical slide rail assembly. Some equipment, such as CN219061558U, has two sets of vertical slide rail assemblies symmetrically mounted on the base assembly. The power head assembly also has corresponding lugs on both sides for sliding connection to the vertical slide rail assembly (the drill rod connection and drive body of the power head are located between the two lugs). Even with the disassembled component transport method, the integrated power head assembly with side lugs still appears large and bulky, making relocation inconvenient and requiring further improvement and optimization. Furthermore, the simultaneous sliding connection of the power head with side lugs to two sets of vertical slide rail assemblies demands a high level of precision, presenting difficulties in hoisting and installation, resulting in low installation efficiency. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a detachable power head ear mount and its connecting structure, so as to solve the technical problems of the current integrated power head assembly with two ear mounts being large, heavy and inconvenient to move, and to achieve the effect of convenient transportation and installation connection.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The detachable power head lug includes a square steel tube for slidingly mounting on a vertical guide rail column. The square steel tube is vertical, and side upright steel plates are respectively attached and fixed to the outer sides of the opposite side plates of the square steel tube. One side of the side upright steel plate extends horizontally beyond the square steel tube, and vertically spaced upper plate, middle plate, and lower plate are horizontally connected between the two side upright steel plates extending beyond the square steel tube. Two connecting partitions are vertically connected between the upper plate and the middle plate, and the connecting partitions are parallel to the side upright steel plates and are spaced apart between the two side upright steel plates. Lateral connection spaces for the power head are formed between the connecting partitions and adjacent side upright steel plates, and between the two connecting partitions. Horizontal connecting pin holes are opened horizontally through the two side upright steel plates and the two connecting partitions, and vertical connecting pin holes are opened vertically through the middle plate between the two connecting partitions.

[0005] To further improve the above technical solution, the upper plate is flush with the upper end of the square steel tube, and the lower plate is flush with the lower end of the square steel tube; roller base plates are vertically connected to the upper surface of the upper plate and the lower surface of the lower plate, respectively. The roller base plates are perpendicular to the side upright steel plates, and several roller connection holes are opened through the roller base plates. The several roller connection holes are spaced apart between the two side upright steel plates.

[0006] Furthermore, the side-standing steel plate has a protrusion extending along its surface, and both ends of the roller base plate are fixedly connected to the protrusion of the side-standing steel plate; the side of the roller base plate away from the square steel tube is connected to the upper plate or the lower plate with an oblique reinforcing rib.

[0007] Furthermore, a horizontal L-shaped reinforcing rib is connected to the outer side of the side upright steel plate. One side of the L-shaped reinforcing rib is fixed to the outer side of the side upright steel plate, and the other side is fixed to the outer side of the side plate of the square steel tube away from the middle plate.

[0008] Furthermore, the upper plate, middle plate, lower plate, and connecting partition are fixedly connected to the square steel pipe on the side facing the square steel pipe.

[0009] The present invention also relates to a power head connection structure, including a power body, wherein ear seats are symmetrically and detachably connected to both sides of the power body, and the two ear seats are vertically slidably sleeved on two vertical guide rail columns one-to-one.

[0010] The ear mount is the aforementioned detachable power head ear mount; The lateral extension protrusion of the power body is provided with two parallel and opposite vertical connecting plates and a horizontal connecting plate located between the two vertical connecting plates. Two vertical connecting plates extend into the lateral connection space of the power head between the connecting partition and the adjacent side vertical steel plate, and a horizontal connecting plate extends into the lateral connection space of the power head between the two connecting partitions; A horizontal pin is provided passing through the horizontal connecting pin hole and the vertical connecting plate; A vertical pin is provided through the vertical connecting pin hole and the horizontal connecting plate.

[0011] Furthermore, the square steel tube is vertically slidably sleeved onto the vertical guide rail column; In the horizontal cross-section, the inner diameter of the square steel tube is larger than the outer diameter of the vertical guide rail column; The side of the roller base plate facing the square steel tube is connected to a roller unit through a roller connection hole. The roller of the roller unit makes rolling contact with the inner side of the vertical guide post. There is a gap between the inner side of the vertical guide post and the inner wall of the opposite square steel tube. In addition to the inner side of the vertical guide rail column, gap adjustment plates are provided between the other three sides of the vertical guide rail column and the inner wall of the opposite square steel tube. The gap adjustment plate is slidably connected to the inner wall of the square steel tube in a direction away from or close to the vertical guide rail column, and is configured such that the vertical distance between it and the inner wall of the square steel tube is adjustable, and can be fixed relative to the square steel tube after the vertical distance is adjusted.

[0012] Furthermore, the lower end of the gap adjustment plate extends outward with a flange, the upper surface of which abuts against the lower end of the square steel tube. A sliding connecting pin is provided on the side plate that slides vertically through the square steel tube and the gap adjustment plate. An adjusting bolt is provided on the side plate that slides vertically through the square steel tube. The adjusting bolt is threadedly engaged with the side plate of the square steel tube. The inner end of the adjusting bolt abuts against the gap adjustment plate. A nut is threadedly connected to the screw section between the head of the adjusting bolt and the square steel tube to fix the adjusting bolt.

[0013] The present invention also relates to a connection method for the above-mentioned power head connection structure, comprising the following steps: 1) Connect ear seats to both sides of the power unit; 2) The two ear seats are vertically slidably mounted on the two vertical guide rail columns one-to-one through the square steel tubes; the rollers of the roller unit roll in contact with the inner side of the vertical guide rail column, and there is a gap between the inner side of the vertical guide rail column and the inner wall of the opposite square steel tube. 3) Insert gap adjustment plates from bottom to top between the other three sides of the vertical guide rail column and the inner wall of the opposite square steel tube, excluding the inner side of the vertical guide rail column. 4) After the flange at the lower end of the gap adjustment plate abuts against the lower end face of the square steel pipe, a sliding connecting pin is inserted vertically through the side plate of the square steel pipe and the gap adjustment plate from the outside to the inside to prevent the gap adjustment plate from falling. 5) Screw in the adjusting bolt, so that the inner end of the adjusting bolt abuts against the gap adjusting plate and makes the gap adjusting plate slide against the vertical guide rail column; 6) Screw in the nut to tighten the square steel tube and thus fix the adjusting bolt.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention solves the technical problems of the current integrated power head assembly with two side lugs being large, heavy, and inconvenient to move, thus achieving the effect of convenient transportation and installation. Attached Figure Description

[0015] Figure 1 This is a front view of the detachable power head lug of an embodiment; Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 The right view; Figure 4 for Figure 1 3D view of the detachable power head ear mount; Figure 5 for Figure 1 A 3D view of the detachable power head ear mount from another perspective; Figure 6 This is a schematic diagram (three-dimensional view) of the power head connection structure in an embodiment. Figure 7 For illustration only Figure 6 A three-dimensional view of the power unit in the power head connection structure; Figure 8 for Figure 6 Front view of the power head connection structure; Figure 9 for Figure 8 Sectional view of AA; Figure 10 for Figure 8 BB section view; Figure 11 for Figure 8 Top view; Figure 12 for Figure 11 CC section view; Figure 13 for Figure 11 DD section view; Among them, there are: ear seat 100, square steel tube 1, side upright steel plate 2, protrusion 21, upper plate 3, middle plate 4, vertical connecting pin hole 41, lower plate 5, connecting partition 6, power head side connecting space 7, horizontal connecting pin hole 8, roller base plate 9, roller connecting hole 91, oblique reinforcing rib plate 10, L-shaped reinforcing rib plate 11, vertical reinforcing rib plate 12, reinforcing plate 13, vertical guide rail column 14, power body 15, vertical connecting plate 16, horizontal connecting plate 17, horizontal pin 18, vertical pin 19, roller unit 20, roller 201, gap adjustment plate 22, flange 221, sliding connecting pin 23, pressure plate 24, adjusting bolt 25, nut 26, and wear-resistant plate layer 27. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0017] Please see Figures 1-5The detachable power head lug of a specific embodiment includes a square steel tube 1 for slidingly mounted on a vertical guide rail column 14. The square steel tube 1 is vertical, and side upright steel plates 2 are respectively attached and fixed to the outer sides of the opposite side plates of the square steel tube 1. One side of the side upright steel plate 2 extends horizontally beyond the square steel tube 1, and vertically spaced upper plate 3, middle plate 4, and lower plate 5 are horizontally connected between the two side upright steel plates 2 that extend beyond the square steel tube 1. Two connecting partitions 6 are vertically connected between the upper plate 3 and the middle plate 4. The connecting partitions 6 are parallel to the side upright steel plates 2 and the two connecting partitions 6 are spaced apart between the two side upright steel plates 2. Lateral connection spaces 7 of the power head are formed between the connecting partitions 6 and the adjacent side upright steel plates 2, and between the two connecting partitions 6. At the same time, horizontal connecting pin holes 8 are opened horizontally through the two side upright steel plates 2 and the two connecting partitions 6, and vertical connecting pin holes 41 are opened vertically through the middle plate 4 between the two connecting partitions 6.

[0018] The upper surface of the upper plate 3 is flush with the upper end of the square steel tube 1, and the lower surface of the lower plate 5 is flush with the lower end of the square steel tube 1. Roller base plates 9 are vertically connected to the upper surface of the upper plate 3 and the lower surface of the lower plate 5, respectively. The roller base plates 9 are perpendicular to the side upright steel plates 2. A plurality of roller connection holes 91 are opened through the roller base plates 9, and the plurality of roller connection holes 91 are spaced apart between the two side upright steel plates 2.

[0019] The side-standing steel plate 2 has a protrusion 21 extending along its surface, and the two ends of the roller base plate 9 are respectively fixedly connected to the protrusion 21 of the side-standing steel plate 2; the side of the roller base plate 9 away from the square steel tube 1 is connected to the upper plate 3 or the lower plate 5 by an oblique reinforcing rib plate 10.

[0020] Among them, the outer side of the side upright steel plate 2 is connected to a horizontal L-shaped reinforcing rib plate 11. One side of the L-shaped reinforcing rib plate 11 is fixed to the outer side of the side upright steel plate 2, and the other side of the L-shaped reinforcing rib plate 11 is fixed to the outer side of the side plate of the square steel pipe 1 away from the middle plate 4.

[0021] Specifically, each side of the steel plate 2 has three L-shaped reinforcing ribs 11 arranged vertically at intervals. The vertical height of the three L-shaped reinforcing ribs 11 corresponds one-to-one with the upper plate 3, the middle plate 4, and the lower plate 5. The side of the square steel tube 1 away from the middle plate 4 is also connected to two horizontally spaced vertical reinforcing ribs 12. The other end of the L-shaped reinforcing rib 11 is fixedly connected to the vertical reinforcing rib 12 on the corresponding side.

[0022] A reinforcing plate 13, which is coplanar with the connecting partition plate 6, is also connected between the middle plate 4 and the lower plate 5.

[0023] Among them, the reinforcing plate 13, the upper plate 3, the middle plate 4, the lower plate 5 and the connecting partition 6 are fixedly connected to the outer wall of the corresponding side plate of the square steel pipe 1 on the side facing the square steel pipe 1.

[0024] Please see Figures 6-13 The present invention also provides a power head connection structure, including a power body 15, wherein ear seats 100 are symmetrically and detachably connected to both sides of the power body 15, and the two ear seats 100 are vertically slidably sleeved on the two vertical guide rail columns 14 one-to-one.

[0025] The ear mount 100 is the aforementioned detachable power head ear mount; Please continue reading Figure 7 The power body 15 has two parallel and opposite vertical connecting plates 16 and a horizontal connecting plate 17 located between the two vertical connecting plates 16, respectively extending horizontally on both sides. Please continue reading Figures 8-12 Two vertical connecting plates 16 extend into the power head lateral connecting space 7 between the connecting partition 6 and the adjacent side vertical steel plate 2, respectively, and a horizontal connecting plate 17 extends into the power head lateral connecting space 7 between the two connecting partitions 6. A horizontal pin 18 is provided through the horizontal connecting pin hole 8 and the corresponding matching hole on the vertical connecting plate 16; A vertical pin 19 is provided through the vertical connecting pin hole 41 and the corresponding matching hole on the horizontal connecting plate 17; the detachable connection between the ear seat and the power body 15 is achieved through the horizontal pin 18 and the vertical pin 19. In implementation, two sets of horizontal connecting pin holes 8 and horizontal pins 18 can be set vertically at intervals as shown in the figure; each set of horizontal pins 18 can also be two axially separated, which are respectively connected one-to-one to a set of side upright steel plates 2, vertical connecting plates 16 and connecting partition plates 6; after the connection is completed, a steel wire ring for preventing detachment is radially inserted through the exposed end of the pin.

[0026] Among them, the ear seat 100 is vertically slidably sleeved on the vertical guide rail column 14 through the square steel tube 1; In the horizontal section, the inner diameter of the square steel tube 1 is larger than the outer diameter of the vertical guide rail column 14. Please continue reading Figure 11 , Figure 13 A roller unit 20 is connected to the side of the roller base plate 9 facing the square steel tube 1 through a roller connection hole 91. Specifically, the roller unit 20 is connected by bolts passing through the roller connection hole 91 and threaded. The roller unit 20 includes a roller 201, the rotation axis of which is perpendicular to the side upright steel plate 2. The roller 201 of the roller unit 20 makes rolling contact with the inner side of the vertical guide post 14. There is a gap between the inner side of the vertical guide post 14 and the inner wall of the opposite square steel tube 1, that is, the roller 201 is higher than the inner wall of the square steel tube 1. Please continue reading Figure 8 , Figure 10 In addition to the inner side of the vertical guide rail column 14, gap adjustment plates 22 are respectively provided between the other three sides of the vertical guide rail column 14 and the inner wall of the opposite square steel tube 1. The gap adjustment plate 22 is slidably connected to the inner wall of the square steel tube 1 in a direction away from or close to the vertical guide rail column 14, and is configured such that the vertical distance between it and the inner wall of the square steel tube 1 is adjustable, and can be fixed relative to the square steel tube 1 after the vertical distance is adjusted.

[0027] The lower end of the gap adjustment plate 22 extends outward with a flange 221. The upper surface of the flange 221 abuts against the lower end of the square steel pipe 1. A sliding connecting pin 23 is provided that slides vertically through the side plate of the square steel pipe 1 and the gap adjustment plate 22. In practice, holes for the sliding connecting pin 23 to pass through are pre-machined on the side plate of the square steel pipe 1 and the gap adjustment plate 22. A pressure plate 24 with screws is provided on the outside of the square steel pipe 1. The pressure plate 24 presses down on the outer end of the sliding connecting pin 23 to prevent it from coming out. An adjusting bolt 25 is provided that slides vertically through the side plate of the square steel pipe 1. The adjusting bolt 25 is threadedly engaged with the side plate of the square steel pipe 1. The inner end of the adjusting bolt 25 abuts against the gap adjustment plate 22. A nut 26 is threadedly connected to the screw section between the head of the adjusting bolt 25 and the square steel pipe 1 so that the square steel pipe 1 can be tightened after adjustment to fix the adjusting bolt 25. The gap adjustment plate 22 slides against the vertical guide rail column 14. After adjustment, the gap adjustment plate 22 can no longer move in the direction away from or close to the vertical guide rail column 14, thus fixing it relative to the square steel pipe 1.

[0028] To facilitate understanding, the connection and usage method of the aforementioned power head connection structure is further described, including the following steps: 1) Connect ear seats to both sides of the power body 15; 2) The two ear seats are vertically slidably mounted on the two vertical guide rail posts 14 one-to-one through the square steel tubes 1; the rollers 201 of the roller unit 20 roll in contact with the inner side of the vertical guide rail post 14, and there is a gap between the inner side of the vertical guide rail post 14 and the inner wall of the opposite square steel tube 1; in practice, the roller unit 20 can be installed on the ear seat before step 1), and the roller unit 20 is connected on the side of the roller base plate 9 of the ear seat facing the square steel tube 1, so that the rollers 201 of the roller unit 20 are higher than the inner wall of the adjacent square steel tube 1; or it can be installed after the ear seat is vertically slidably mounted on the vertical guide rail post 14 through the square steel tube 1, whichever is more specific.

[0029] 3) In addition to the inner side of the vertical guide rail post 14, gap adjustment plates 22 are inserted from bottom to top between the other three sides of the vertical guide rail post 14 and the inner wall of the opposite square steel pipe 1. 4) After the flange 221 at the lower end of the gap adjustment plate 22 abuts against the lower end face of the square steel pipe 1, a sliding connecting pin 23 is inserted vertically through the side plate of the square steel pipe 1 and the gap adjustment plate 22 from the outside to the inside to prevent the gap adjustment plate 22 from falling. 5) Screw in the adjusting bolt 25, so that the inner end of the adjusting bolt 25 abuts against the gap adjusting plate 22, and the gap adjusting plate 22 slides against the vertical guide rail column 14. 6) Screw in nut 26 to tighten square steel pipe 1, thereby fixing adjusting bolt 25.

[0030] In this embodiment, the adjusting bolt 25 is threadedly connected to the welding nut on the outer side of the side plate, and the side plate has a suitable through hole; Two roller units 20 are horizontally spaced on each roller base plate 9; The middle of the free ends of the upper plate 3 and the lower plate 5 are recessed with notches. In the vertical projection, the vertical pin 19 is inside the notch to facilitate assembly and disassembly without obstruction. The inner side of the gap adjustment plate 22 is also fitted with a wear-resistant plate layer 27, and the side of the vertical guide rail column 14 corresponding to the sliding contact is also equipped with a vertical wear-resistant plate layer. Two to four adjusting bolts 25 can be vertically spaced.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of the present invention without departing from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A detachable power head ear mount, characterized in that: It includes a square steel tube for slidingly mounting on a vertical guide rail column. Side upright steel plates are respectively attached and fixed to the outer sides of the opposite side plates of the square steel tube. One side of the side upright steel plate extends horizontally beyond the square steel tube, and vertically spaced upper plate, middle plate, and lower plate are horizontally connected between the two side upright steel plates that extend beyond the square steel tube. Two connecting partitions are vertically connected between the upper plate and the middle plate. The connecting partitions are parallel to the side upright steel plates and are spaced apart between the two side upright steel plates. Lateral connection spaces for the power head are formed between the connecting partitions and the adjacent side upright steel plates, as well as between the two connecting partitions. Horizontal connecting pin holes are opened horizontally through the two side upright steel plates and the two connecting partitions. Vertical connecting pin holes are opened vertically through the middle plate between the two connecting partitions.

2. The detachable power head ear mount according to claim 1, characterized in that: The upper plate is flush with the upper end of the square steel tube, and the lower plate is flush with the lower end of the square steel tube. Roller base plates are vertically connected to the upper surface of the upper plate and the lower surface of the lower plate, respectively. The roller base plates are perpendicular to the side upright steel plates. Several roller connection holes are opened through the roller base plates, and the several roller connection holes are spaced apart between the two side upright steel plates.

3. The detachable power head ear mount according to claim 2, characterized in that: The side-standing steel plate has a protrusion extending along its surface, and the two ends of the roller base plate are respectively fixedly connected to the protrusion of the side-standing steel plate; the side of the roller base plate away from the square steel tube is connected to the upper plate or the lower plate with an oblique reinforcing rib.

4. The detachable power head ear mount according to claim 1, characterized in that: A horizontal L-shaped reinforcing rib is connected to the outer side of the side upright steel plate. One side of the L-shaped reinforcing rib is fixed to the outer side of the side upright steel plate, and the other side is fixed to the outer side of the side plate of the square steel tube away from the middle plate.

5. The detachable power head ear mount according to claim 1, characterized in that: The upper plate, middle plate, lower plate, and connecting partition are fixedly connected to the square steel pipe on the side facing the square steel pipe.

6. A power head connection structure, comprising a power body, characterized in that: The two sides of the power body are symmetrically and detachably connected to detachable power head ear seats as described in any one of claims 1-5, and are vertically slidably sleeved on the two vertical guide rail columns one-to-one by the two ear seats.

7. The power head connection structure according to claim 6, characterized in that: The lateral extension protrusion of the power body is provided with two parallel and opposite vertical connecting plates and a horizontal connecting plate located between the two vertical connecting plates. Two vertical connecting plates extend into the lateral connection space of the power head between the connecting partition and the adjacent side vertical steel plate, and a horizontal connecting plate extends into the lateral connection space of the power head between the two connecting partitions; A horizontal pin is provided passing through the horizontal connecting pin hole and the vertical connecting plate; A vertical pin is provided through the vertical connecting pin hole and the horizontal connecting plate.

8. The power head connection structure according to claim 7, characterized in that: The square steel tube is vertically slidably sleeved onto the vertical guide rail column; In the horizontal cross-section, the inner diameter of the square steel tube is larger than the outer diameter of the vertical guide rail column; The side of the roller base plate facing the square steel tube is connected to a roller unit through a roller connection hole. The roller of the roller unit makes rolling contact with the inner side of the vertical guide post. There is a gap between the inner side of the vertical guide post and the inner wall of the opposite square steel tube. In addition to the inner side of the vertical guide rail column, gap adjustment plates are provided between the other three sides of the vertical guide rail column and the inner wall of the opposite square steel tube. The gap adjustment plate is slidably connected to the inner wall of the square steel tube in a direction away from or close to the vertical guide rail column, and is configured such that the vertical distance between it and the inner wall of the square steel tube is adjustable, and can be fixed relative to the square steel tube after the vertical distance is adjusted.

9. The power head connection structure according to claim 8, characterized in that: The lower end of the gap adjustment plate extends outward with a flange, the upper surface of which abuts against the lower end of the square steel tube. A sliding connecting pin is provided on the side plate that slides vertically through the square steel tube and the gap adjustment plate. An adjusting bolt is provided on the side plate that slides vertically through the square steel tube. The adjusting bolt is threadedly engaged with the side plate of the square steel tube. The inner end of the adjusting bolt abuts against the gap adjustment plate. A nut is threadedly connected to the screw section between the head of the adjusting bolt and the square steel tube to fix the adjusting bolt.

10. A connection method for a power head connection structure, characterized in that: This method constructs a power head connection structure as described in claim 9, specifically including the following steps: 1) Connect ear seats to both sides of the power unit; 2) The two ear seats are vertically slidably mounted on the two vertical guide rail columns one-to-one through the square steel tubes; the rollers of the roller unit roll in contact with the inner side of the vertical guide rail column, and there is a gap between the inner side of the vertical guide rail column and the inner wall of the opposite square steel tube. 3) Insert gap adjustment plates from bottom to top between the other three sides of the vertical guide rail column and the inner wall of the opposite square steel tube, excluding the inner side of the vertical guide rail column. 4) After the flange at the lower end of the gap adjustment plate abuts against the lower end face of the square steel pipe, a sliding connecting pin is inserted vertically through the side plate of the square steel pipe and the gap adjustment plate from the outside to the inside to prevent the gap adjustment plate from falling. 5) Screw in the adjusting bolt, so that the inner end of the adjusting bolt abuts against the gap adjusting plate and makes the gap adjusting plate slide against the vertical guide rail column; 6) Screw in the nut to tighten the square steel tube and thus fix the adjusting bolt.

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