High-power cable interface correction device
By designing a high-power cable interface correction device, a servo electric cylinder is used to drive the slide to move, achieving precise correction of the cable plug. This solves the problem of difficult interface insertion caused by the accuracy of the cable plug, and improves the battery life and charging efficiency.
Patent Information
- Application Number
- CN202423174058.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-20
AI Technical Summary
High-power cable plugs cannot be inserted due to processing and assembly precision issues, affecting the aircraft's endurance and charging efficiency. Existing charging equipment cannot meet the requirements for outdoor use.
A high-power cable interface correction device was designed, which uses components such as left and right brackets, servo cylinder, slide and correction seat. The servo cylinder drives the slide to move, thereby correcting the cable plug. The correction groove is adapted to the copper column of the cable plug, reducing the correction force and concentrating the deformed part outside the shell.
It improves the accuracy and stability of cable plugs, reduces the correction force and cost, adapts to different specifications of cable plugs, and enhances operational flexibility and correction accuracy.
Smart Images
Figure CN223809406U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cable joint correction technical field, concretely relates to a kind of high-power cable interface correction device. BACKGROUND
[0002] High-power interface has been widely applied in "agriculture, forestry, animal husbandry and fishery" multiple scene operations, such as for farmland spraying, farmland sowing, fruit tree spraying, fruit tree sowing, aquatic sowing, forestry aerial defense, forest fire fighting, disaster rescue, traffic monitoring, environmental law enforcement, water environment dynamic detection and other multiple scene uses.
[0003] Especially for the aircraft with heavy load, the battery volume and capacity are relatively small, and it is difficult to break through the unit volume battery capacity technology, so the flight endurance time of the aircraft is not equal to 0.5H-3.5H. The endurance time cannot meet the consumer's expectation, and frequent charging is needed. According to the current charging method, the charging environment 220V&380V AC power cannot meet the consumer's use requirement, thereby restricting the actual use efficiency of the aircraft.
[0004] How to use movable charging equipment and large power charging cable to meet the rapid power supply of the aircraft during field flight after single flight in the open air. The high-power interface is usually connected by copper positive / negative electrode with not less than two contacts, and the interface cannot be inserted due to the machining and assembling precision when the terminal equipment is used. UTILITY MODEL CONTENTS
[0005] The utility model discloses a kind of high-power cable interface correction devices, can further correct high-power cable plug, substantially improve the accuracy of high-power cable plug.
[0006] The utility model discloses a kind of high-power cable interface correction devices, including workbench, left support and right support set on workbench, left servo cylinder and right servo cylinder are set on left support and right support respectively, left support and right support are symmetrically set, the telescopic end of left servo cylinder and right servo cylinder is oppositely set, further include the guide rail set between left support and right support, left slide and right slide are set on guide rail, and left correction seat and right correction seat are set between left slide and right slide;Left slide and right slide are oppositely set and respectively with left servo cylinder and right servo cylinder transmission connection, left correction seat and right correction seat are oppositely set and lower end is set with correction groove, left correction seat outer end and left slide inner end abut tightly, right correction seat outer end and right slide inner end abut tightly.
[0007] Left guide groove and right guide groove are respectively set on the outer end of left correction seat and right correction seat, and left guide groove and right guide groove are vertical through groove structure.
[0008] The lower end of the left slide base and the right slide base is respectively provided with a left baffle and a right baffle which protrude downward.
[0009] The left slide base is fixed with a left pad at the position abutting against the left correction base, the right slide base is fixed with a right pad at the position abutting against the right correction base, and the opposite end faces of the left baffle and the right baffle are flush with the opposite end faces of the left slide base and the right slide base.
[0010] The lower part of the inner end of the left slide base abuts against the upper part of the outer end of the left correction base, and the lower part of the inner end of the right slide base abuts against the upper part of the outer end of the right correction base.
[0011] The guide rail comprises parallel optical axes, the number of the optical axes is at least two, the two ends of the optical axes are respectively fixed on the opposite ends of the left support and the right support, the left slide base and the right slide base are provided with sliding holes matched with the optical axes, the left slide base and the right slide base are sleeved on the optical axes through the sliding holes and are driven by the left servo cylinder and the right servo cylinder to have the freedom of translation on the optical axes.
[0012] The left support comprises two horizontal plates longitudinally spaced on the workbench, a vertical plate fixed on the front ends of the two horizontal plates, an avoiding opening provided on the vertical plate, and a positioning groove longitudinally provided on the workbench, the horizontal plates are horizontally arranged, the vertical plate is longitudinally arranged and the lower end is arranged in the positioning groove, the left servo cylinder is fixed on the outer end of the vertical plate and located between the horizontal plates, and the extension end of the left servo cylinder passes through the avoiding opening and is fixed with the left slide base;
[0013] The structure of the right support and the mounting mode of the right servo cylinder are the same as the structure of the left support and the mounting mode of the left servo cylinder, the two ends of the guide rail are respectively fixed on the inner ends of the vertical plates, and the left slide base, the right slide base, the left correction base and the right correction base are located between the vertical plates.
[0014] The workbench is further provided with a plug limiting mechanism, and the plug limiting mechanism is located between the left support and the right support and below the guide rail.
[0015] The plug limiting mechanism comprises oppositely arranged first left and right stop blocks, second left and right stop blocks arranged on the outer ends of the first left and right stop blocks, the first left and right stop blocks are in inverted L-shaped structure and the openings thereof face the same longitudinal direction, and the second left and right stop blocks are respectively shielded on the outer sides of the openings of the first left and right stop blocks; the left correction base and the right correction base are located between the first left and right stop blocks.
[0016] The utility model discloses a beneficial effect is, provide a kind of high-power cable interface correction device, left correction seat, right correction seat between left slide seat, right slide seat respectively and the connecting mode for pressing tightly, and there is no fixed relationship, adopt the design of split type, correction groove adopts counterbore structure, only suitably left electrical copper column and right electrical copper column's upper half portion, this design main advantages include:1, can reduce the force required for left electrical copper column and right electrical copper column correction.2, can make left electrical copper column and right electrical copper column deformation portion mainly concentrate in the lower half segment in shell, reduce the influence to left electrical copper column and right electrical copper column in shell and cable connecting part.3, the quantity and size of correction groove and the quantity and size of electrical copper column on cable plug are adaptive relationship, can design multiple specifications left correction seat and right correction seat according to different cable plug, and left correction seat and right correction seat and other components of correction device have no fixed relationship, for different cable plug, left correction seat and right correction seat can be directly used, and operation is flexible, convenient.4, left correction seat and right correction seat can reduce material, weight and volume, reduce cost.5, can control the length of left electrical copper column and right electrical copper column embedded in correction groove by controlling the depth of correction groove. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the structural schematic diagram of the utility model.
[0018] Figure 2 It is the structural schematic diagram of left correction seat, right correction seat and cable plug after installation in the utility model.
[0019] Figure 3 It is the structural schematic diagram of left slide seat and left correction seat pressing tightly in the utility model.
[0020] Figure 4 It is the structural schematic diagram of left slide seat or right slide seat in the utility model.
[0021] Figure 5 It is the structural schematic diagram of left correction seat or right correction seat in the utility model.
[0022] Figure 6 It is the structural schematic diagram of plug limiting mechanism in the utility model.
[0023] In the drawings, 1 is a workbench, 2 is a left support, 3 is a right support, 4 is a left servo cylinder, 5 is a right servo cylinder, 6 is a left sliding seat, 7 is a right sliding seat, 8 is a left correction seat, 9 is a right correction seat, 10 is a correction groove, 11 is a left guide groove, 12 is a right guide groove, 13 is a left baffle, 14 is a right baffle, 15 is a left pad, 16 is a right pad, 17 is an optical axis, 18 is a horizontal plate, 19 is a vertical plate, 20 is a clearance, 21 is a positioning groove, 22 is a first left stop block, 23 is a first right stop block, 24 is a second left stop block, 25 is a second right stop block, 26 is a shell, 27 is a left side stop piece, 28 is a right side stop piece, 29 is a left guide column, 30 is a right guide column, 31 is a left electrical connection copper column, 32 is a right electrical connection copper column, and 33 is a protruding portion. DETAILED DESCRIPTION
[0024] As Figures 1-6 shown, the utility model provides a kind of high-power cable interface correction device, including workbench 1, left support 2 and right support 3 being set on workbench 1, left servo cylinder 4 and right servo cylinder 5 being set on left support 2 and right support 3 respectively, the left support 2 and right support 3 are symmetrically set, the telescopic end of left servo cylinder 4 and right servo cylinder 5 is oppositely set, further include guide rail being set between left support 2 and right support 3, left sliding seat 6 and right sliding seat 7 being set on guide rail, and left correction seat 8 and right correction seat 9 being set between left sliding seat 6 and right sliding seat 7;The left sliding seat 6 and right sliding seat 7 are oppositely set and respectively with left servo cylinder 4 and right servo cylinder 5 transmission connection, the left correction seat 8 and right correction seat 9 are oppositely set and the lower end is all provided with correction groove 10, left correction seat 8 outer end and left sliding seat 6 inner end abut tightly, right correction seat 9 outer end and right sliding seat 7 inner end abut tightly.
[0025] The correction groove 10 of left correction seat 8 and right correction seat 9 lower end corresponds and adapts with left electrical connection copper column 31 and right electrical connection copper column 32 on cable plug."Inner end" in this paper refers to opposite end, "outer end" refers to opposite end.
[0026] In use, the left and right correction seats 8 and 9 need to be installed on the cable plug first, specifically, the shell 26 of the cable plug is downward, the left and right electrical copper columns 31 and 32 are upward, the left correction seat 8 is manually placed on the left electrical copper column 31, the upper end of the left electrical copper column 31 is embedded in the correction groove 10 at the lower end of the left correction seat 8, and the right correction seat 9 is placed on the right electrical copper column 32, the upper end of the right electrical copper column 32 is embedded in the correction groove 10 at the lower end of the right correction seat 9. This operation is completed before the cable plug is put into the correction device, and the operation is very simple and convenient. Moreover, the correction groove 10 adopts a circular groove structure instead of a through hole structure, so that when the left and right correction seats 8 and 9 are installed on the cable plug, the left and right electrical copper columns 31 and 32 will only be embedded in the correction groove 10 in the upper half of the shell 26 outside, and will not be inserted completely. Firstly, it can reduce the force required to correct the left and right electrical copper columns 31 and 32. Secondly, it can make the deformation part of the left and right electrical copper columns 31 and 32 mainly concentrate on the lower half of the shell 26 outside, thereby reducing the influence on the part of the left and right electrical copper columns 31 and 32 located in the shell 26. Thirdly, the number and size of the correction groove 10 are adapted to the number and size of the electrical copper columns on the cable plug. Various specifications of the left and right correction seats 8 and 9 can be designed according to different cable plugs. Moreover, the left and right correction seats 8 and 9 have no fixed relationship with other parts of the correction device. For different cable plugs, the left and right correction seats 8 and 9 can be directly used. The operation is flexible and convenient. Fourthly, it can reduce the material, weight and volume of the left and right correction seats 8 and 9, thereby reducing the cost. Fifthly, by controlling the depth of the correction groove 10, the length of the left and right electrical copper columns 31 and 32 embedded in the correction groove 10 can be controlled. According to different situations, the left and right correction seats 8 and 9 can be designed in a customized manner.
[0027] Then the cable plug with the installed left and right correction seats 8 and 9 is placed under the guide rail, and the left and right correction seats 8 and 9 are located between the left and right sliding seats 6 and 7. At this time, the inner end of the left sliding seat 6 abuts against the outer end of the left correction seat 8, and the inner end of the right sliding seat 7 abuts against the outer end of the right correction seat 9. The left and right servo cylinders 4 and 6 are started to push the left and right sliding seats 6 and 7 inward respectively. The left and right sliding seats 6 and 7 translate inward relative to each other, and the left and right correction seats 8 and 9 are pushed inward relative to each other, thereby achieving the correction of the left and right electrical copper columns 31 and 32.
[0028] As shown in Figure 2 , 3 , 5, the outer ends of the left and right correction seats 8 and 9 are respectively provided with left and right guide grooves 11 and 12. The left and right guide grooves 11 and 12 are both vertical through groove structures.
[0029] The left guide slot 11 and the right guide slot 12 can avoid the left guide post 29 and the right guide post 30 on the cable plug, and can guide the placement of the left correction seat 8 and the right correction seat 9 on the cable plug, and can reduce the production material and further reduce the cost.
[0030] As shown in Figures 3-4 The lower end of the left slide seat 6 and the right slide seat 7 is respectively provided with a downward protruding left baffle 13 and a right baffle 14.
[0031] The left baffle 13 is located between the left side stopper 27 and the left guide post 29 on the cable plug, and the right baffle 14 is located between the right side stopper 28 and the right guide post 30. When the cable plug is placed into the correction device, it can play a positioning role, and the distance between the left baffle 13 and the left guide post 29 corresponds to the maximum angle of the left correction seat 8 correcting the left electrical copper column 31, which limits the translation range of the left slide seat 6 and effectively avoids the correction angle being too large, thereby causing damage to the cable plug.
[0032] As shown in Figures 3-4 The left baffle 13 and the right baffle 14 are respectively fixed with the left baffle 13 and the right baffle 14 on the position of the left slide seat 6 abutting against the left correction seat 8 and the right slide seat 7 abutting against the right correction seat 9. The opposite end faces of the left baffle 13 and the right baffle 14 are respectively flat with the opposite end faces of the left slide seat 6 and the right slide seat 7.
[0033] The inner end faces of the left baffle 13 and the right baffle 14 are designed as the same end face as the inner end faces of the left slide seat 6 and the right slide seat 7, and the left pad 15 is added between the left slide seat 6 and the left correction seat 8, and the right pad 16 is added between the right slide seat 7 and the right correction seat 9. The thickness of the left pad 15 and the right pad 16, that is, the translatable range of the left slide seat 6 and the right slide seat 7, and after wear, the left pad 15 and the right pad 16 can be directly replaced without replacing the left slide seat 6 and the right slide seat 7, which greatly reduces the maintenance cost, and the disassembly and assembly of the left pad 15 and the right pad 16 are simpler than those of the left slide seat 6 and the right slide seat 7.
[0034] As shown in Figure 3 The inner end lower part of the left slide seat 6 and the outer end upper part of the left correction seat 8 abut against each other, and the inner end lower part of the right slide seat 7 and the outer end upper part of the right correction seat 9 abut against each other.
[0035] The abutting positions of the left slide seat 6 and the left correction seat 8, and the right slide seat 7 and the right correction seat 9 are limited, the left guide post 29 and the right guide post 30 are avoided, and the stress positions of the left electrical copper column 31 and the right electrical copper column 32 of the cable plug are better concentrated in the upper half, further reducing the influence on the cable connection position of the left electrical copper column 31 and the right electrical copper column 32.
[0036] As shown in Figure 1As shown, the guide rail comprises parallel light axes 17, the number of which is at least two, the two ends of the light axes 17 are fixed on the opposite ends of the left support 2 and the right support 3 respectively, the left slide seat 6 and the right slide seat 7 are provided with sliding holes matched with the light axes 17, the left slide seat 6 and the right slide seat 7 are sleeved on the light axes 17 through the sliding holes and are driven by the left servo cylinder 4 and the right servo cylinder 5 to have the freedom of translation on the light axes 17.
[0037] The guide rail is adopted as the left slide seat 6 and the right slide seat 7 to slide, the friction of the light axes 17 is small, and the two parallel light axes 17 can support and guide the translation of the left slide seat 6 and the right slide seat 7, and the movement is more stable.
[0038] As shown in the left support 2, Figure 1 the left support 2 comprises two transverse plates 18 longitudinally spaced on the workbench 1, a longitudinal plate 19 fixed on the front ends of the two transverse plates 18, an avoiding opening 20 provided on the longitudinal plate 19, and a positioning groove 21 longitudinally provided on the workbench 1, the transverse plates 18 are transversely arranged, the longitudinal plate 19 is longitudinally arranged and the lower end is arranged in the positioning groove 21, the left servo cylinder 4 is fixed on the outer end of the longitudinal plate 19 and located between the transverse plates 18, the telescopic end of the left servo cylinder 4 passes through the avoiding opening 20 and is fixed with the left slide seat 6; the structure of the right support 3 and the installation mode of the right servo cylinder 5 are the same as the structure of the left support 2 and the installation mode of the left servo cylinder 4, the two ends of the guide rail are fixed on the inner ends of the longitudinal plate 19, and the left slide seat 6, the right slide seat 7, the left correction seat 8 and the right correction seat 9 are located between the longitudinal plate 19.
[0039] The structure of the left support 2 and the right support 3 is defined, the stress concentration is concentrated in the middle part of the left support 2 and the right support 3, the structure is more stable, the positioning groove 21 can play a positioning role in the installation of the left support 2 and the right support 3, and the lower end of the longitudinal plate 19 is embedded in the positioning groove 21, which can further ensure that the left support 2 and the right support 3 will not be inclined and deviated after being stressed, and further improve the accuracy and stability of correction.
[0040] As shown in the left support 2, Figure 1 and 6 the workbench 1 is further provided with a plug limiting mechanism, the plug limiting mechanism is located between the left support 2 and the right support 3 and below the guide rail; the plug limiting mechanism comprises a first left block 22 and a first right block 23 arranged oppositely, a second left block 24 and a second right block 25 arranged on the outer ends of the first left block 22 and the first right block 23 respectively, the first left block 22 and the second right block 25 are inverted L-shaped structures and the openings thereof face the same longitudinal direction, and the second left block 24 and the second right block 25 are shielded on the outer sides of the openings of the first left block 22 and the second right block 25 respectively; the left correction seat 8 and the right correction seat 9 are located between the first left block 22 and the first right block 23.
[0041] The housing 26 of the cable plug is designed with protrusions 33 on both sides, the cable plug with the installed left and right correction seats 8 and 9 is placed on the workbench 1 manually with the housing 26 facing downwards, and the cable plug is pushed to translate under the guide rail, at this time, the protrusions 33 on both sides of the housing 26 are translated into the openings of the first left and right stop blocks 22 and 23 respectively, and the second left and right stop blocks 24 and 25 block the outer sides of the first left and right stop blocks 22 and 23 respectively, so that the cable plug is positioned, the operation is facilitated, and the position of the cable plug during correction is more accurate.
[0042] In the present document, the longitudinal direction refers to the opening direction between the longitudinal plates 19, and if the opposite and opposite directions of the longitudinal plates 19 are defined as front and back, the longitudinal direction is left and right.
[0043] The left and right supports 2 and 3 are the same and symmetrical in structure, the left and right servo cylinders 4 and 5 are the same and symmetrical in structure, the left and right sliding seats 6 and 7 are the same and symmetrical in structure, the left and right correction seats 8 and 9 are the same and symmetrical in structure, the left and right guide grooves 11 and 12 are the same and symmetrical in structure, the left and right baffle plates 13 and 14 are the same and symmetrical in structure, the left and right gaskets 15 and 16 are the same and symmetrical in structure, the first left and right stop blocks 22 and 23 are the same and symmetrical in structure, and the second left and right stop blocks 24 and 25 are the same and symmetrical in structure, so that the same and left-right symmetrical structure can save processing cost and facilitate assembly.
[0044] In the cable joint, the left and right stop plates 27 and 28 are the same and symmetrical in structure, the left and right guide columns 29 and 30 are the same and symmetrical in structure, and the left and right electrical copper columns 31 and 32 are the same and symmetrical in structure.
[0045] As shown in Figure 6 The structure of the high-power cable plug suitable for the design is: comprising a housing 26, left and right stop plates 27 and 28 respectively vertically arranged on the upper ends of both sides of the housing 26, left and right guide columns 29 and 30 arranged on the upper end of the housing 26, and left and right electrical copper columns 31 and 32 arranged between the left and right guide columns 29 and 30, one side of the housing 26 is provided with a wire inlet hole, one end of the cable extends into the housing 26 from the wire inlet hole of the housing 26 and is connected with the left and right electrical copper columns 31 and 32, the left electrical copper column 31 is longitudinally spaced apart with two, the right electrical copper column 32 is longitudinally spaced apart with two, and both sides of the housing 26 are provided with protrusions 33 protruding to both sides respectively.
[0046] The utility model discloses a correcting device is to this structure's high -power cable plug on the electricity -connection copper column carries out correction, and the left electricity -connection copper column 31 and right electricity -connection copper column 32 will be inclined to the outside after high -power cable plug production assembly is completed, and for this condition, adopt the correcting device of the utility model to further correct the high -power cable plug after assembly, improve the production accuracy of high -power cable plug, and the user uses conveniently.
Claims
1. A high-power cable interface correction device, comprising a workbench (1), a left support (2) and a right support (3) arranged on the workbench (1), a left servo cylinder (4) and a right servo cylinder (5) arranged on the left support (2) and the right support (3) respectively, the left support (2) and the right support (3) are symmetrically arranged, and the extension ends of the left servo cylinder (4) and the right servo cylinder (5) are arranged opposite to each other, characterized in that: It also includes a guide rail arranged between the left support (2) and the right support (3), a left slide seat (6) and a right slide seat (7) arranged on the guide rail, and a left correction seat (8) and a right correction seat (9) arranged between the left slide seat (6) and the right slide seat (7); the left slide seat (6) and the right slide seat (7) are oppositely arranged and are respectively in transmission connection with the left servo cylinder (4) and the right servo cylinder (5), and the left correction seat (8) and the right correction seat (9) are oppositely arranged and are each provided with a correction groove (10) at the lower end, the outer end of the left correction seat (8) is abuttingly connected with the inner end of the left slide seat (6), and the outer end of the right correction seat (9) is abuttingly connected with the inner end of the right slide seat (7). 2. A high power cable interface correction device according to claim 1, characterized in that: The outer end of the left correction seat (8) and the outer end of the right correction seat (9) are respectively provided with a left guide groove (11) and a right guide groove (12), and the left guide groove (11) and the right guide groove (12) are both vertical through groove structures.
3. A high power cable interface correction device as claimed in claim 1, characterized in that: The lower end of the left slide seat (6) and the lower end of the right slide seat (7) are respectively provided with a left baffle (13) and a right baffle (14) which protrude downward.
4. A high power cable interface correction device as claimed in claim 3, characterized in that: The left slide seat (6) is fixed with a left pad (15) at the position abutting against the left correction seat (8), the right slide seat (7) is fixed with a right pad (16) at the position abutting against the right correction seat (9), and the opposite end faces of the left baffle (13) and the right baffle (14) are respectively flush with the opposite end faces of the left slide seat (6) and the right slide seat (7).
5. A high power cable interface correction device as claimed in claim 1 or 2 or 3 or 4, wherein: The inner lower part of the left slide seat (6) is abuttingly connected with the outer upper part of the left correction seat (8), and the inner lower part of the right slide seat (7) is abuttingly connected with the outer upper part of the right correction seat (9).
6. A high power cable interface correction device as claimed in claim 1, characterized in that: The guide rail includes parallel arranged optical shafts (17), the number of the optical shafts (17) is at least two, the two ends of the optical shafts (17) are respectively fixed on the opposite ends of the left support (2) and the right support (3), the left slide seat (6) and the right slide seat (7) are provided with slide holes matched with the optical shafts (17), the left slide seat (6) and the right slide seat (7) are sleeved on the optical shafts (17) through the slide holes and are driven by the left servo cylinder (4) and the right servo cylinder (5) to have the freedom of translation on the optical shafts (17).
7. A high power cable interface correction device as recited in claim 1, wherein: The left support (2) includes two transverse plates (18) longitudinally spaced on the workbench (1), a longitudinal plate (19) fixed on the front ends of the two transverse plates (18), an avoiding opening (20) arranged on the longitudinal plate (19), and a positioning groove (21) longitudinally arranged on the workbench (1), the transverse plates (18) are transversely arranged, the longitudinal plate (19) is longitudinally arranged and the lower end is arranged in the positioning groove (21), the left servo cylinder (4) is fixed on the outer end of the longitudinal plate (19) and is located between the transverse plates (18), and the telescopic end of the left servo cylinder (4) passes through the avoiding opening (20) and is fixed with the left slide seat (6); The structure of the right support (3) and the installation mode of the right servo cylinder (5) are the same as the structure of the left support (2) and the installation mode of the left servo cylinder (4), the two ends of the guide rail are respectively fixed on the inner ends of the longitudinal plate (19), and the left slide seat (6), the right slide seat (7), the left correction seat (8) and the right correction seat (9) are located between the longitudinal plate (19).
8. A high power cable interface correction device as claimed in claim 1, characterized in that: The workbench (1) is further provided with a plug limiting mechanism, which is located between the left support (2) and the right support (3) and below the guide rail; The plug limiting mechanism comprises oppositely arranged first left and right stop blocks (22 and 23), and second left and right stop blocks (24 and 25) arranged at the outer ends of the first left and right stop blocks (22 and 23) respectively, the first left stop block (22) and the second right stop block (25) are in inverted L-shaped structure and the openings thereof are directed to the same longitudinal direction, and the second left and right stop blocks (24 and 25) are respectively shielded outside the openings of the first left and right stop blocks (22 and 25); the left and right correction seats (8 and 9) are located between the first left and right stop blocks (22 and 23).