CN116638346A - Auxiliary supporting and positioning device - Google Patents

Auxiliary supporting and positioning device Download PDF

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Publication number
CN116638346A
CN116638346A CN202310757203.4A CN202310757203A CN116638346A CN 116638346 A CN116638346 A CN 116638346A CN 202310757203 A CN202310757203 A CN 202310757203A CN 116638346 A CN116638346 A CN 116638346A
Authority
CN
China
Prior art keywords
gear
transmission
rod
lifting
driving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310757203.4A
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Chinese (zh)
Inventor
郭彩芬
董志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Vocational University
Original Assignee
Suzhou Vocational University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Vocational University filed Critical Suzhou Vocational University
Priority to CN202310757203.4A priority Critical patent/CN116638346A/en
Publication of CN116638346A publication Critical patent/CN116638346A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/14—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top
    • B25H1/16—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top in height
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The utility model provides an auxiliary stay positioner, includes base, ejector pin, jacking driving medium, automatic locking piece and jacking driving medium, and the ejector pin sets up on the base along its axial activity, and jacking driving medium set up respectively in the avris department that the base is located the ejector pin, and the jacking driving medium is connected with the side meshing of jacking driving medium and ejector pin respectively, still coaxial automatic locking piece and jacking driving medium of being provided with on the jacking driving medium are connected through a connecting rod. According to the invention, the push rod can be driven to lift up and self-adaptively support against the bottom surface of the workpiece through rotating the pull rod and transmitting the pull rod through a series of transmission structures, so that the auxiliary supporting purpose is realized, the push rod does not need to be manually intervened in the lifting process, the operation is simple, and the push rod realizes self-locking through the ratchet wheel and the ratchet claw, so that the stability and the reliability of the supporting device are ensured.

Description

Auxiliary supporting and positioning device
Technical Field
The invention relates to the technical field of machining, in particular to an auxiliary supporting and positioning device capable of randomly adjusting height.
Background
When the positioning rigidity of the workpiece positioning reference surface and the stability and reliability of the machining process need to be improved, an auxiliary support can be selected to serve as an auxiliary positioning device. The most common auxiliary support structures are screw-type, push-type. The spiral auxiliary supporting structure is shown in fig. 1, the lifting of the ejector rod 1 is realized by rotating a nut at the bottom of the ejector rod, the structure is simple, the adjustment is convenient, but the specific supporting height is required to be adjusted by experience, the accuracy is low, and the spiral auxiliary supporting structure is not suitable for heavy-load chip use. As shown in fig. 2, the push-type auxiliary supporting structure makes the wedge 3 move towards the ejector rod 1 by pushing the pushing piece 2, so as to lift the ejector rod 1, and the push-type auxiliary supporting structure is relatively simple in structure and convenient to operate, but has poor self-locking property, and the lifting angle alpha of the wedge 3 in the figure is required to be not more than 6 degrees.
Disclosure of Invention
In view of the above, the present invention is to provide an auxiliary supporting and positioning device, which has functions of automatically adjusting the lifting height and locking, thereby improving the accuracy, stability and reliability of the whole device.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides an auxiliary stay positioner, includes base, ejector pin, jacking driving medium, automatic locking piece and jacking driving medium, the ejector pin is in along its axial activity setting on the base, the jacking driving medium with the jacking driving medium sets up respectively the base is located the avris department of ejector pin, the jacking driving medium respectively with the jacking driving medium with the side meshing of ejector pin is connected, still coaxial being provided with on the jacking driving medium automatic locking piece just automatic locking piece with the jacking driving medium is connected through a connecting rod.
Preferably, the jacking driving member comprises a pull rod and a semicircular gear, the semicircular gear is rotatably arranged inside the base, the pull rod is radially arranged along the semicircular gear, one end of the pull rod is fixedly connected with the center of the semicircular gear, the other end of the pull rod extends to the outside of the base, the jacking driving member comprises a driven gear and a driving gear, the driven gear and the driving gear are rotatably arranged inside the base and are positioned at the side of the ejector rod and are in meshed connection with each other, the driving gear is in meshed connection with the semicircular gear, a rack is further arranged at the side of the ejector rod along the axial direction of the side of the ejector rod and is in meshed connection with the driven gear, and the semicircular gear is driven to rotate clockwise or anticlockwise through meshed transmission of the driving gear, the driven gear and the rack so that the ejector rod ascends or descends.
Preferably, a strip-shaped accommodating cavity is axially arranged at the position, located at the side of the ejector rod, inside the base, along the ejector rod, the rack is arranged in the strip-shaped accommodating cavity and fixedly connected with the side of the ejector rod, and the driven gear part is located in the strip-shaped accommodating cavity and meshed and connected with the rack.
Preferably, the length of the strip-shaped accommodating cavity is L, the length of the rack is L, and the arc length of the semicircular gear is S, wherein L is more than or equal to 2L and less than or equal to S.
Preferably, the driving gear is further coaxially provided with an intermediate gear, the intermediate gear is in transmission connection with the driving gear through a transmission locking structure, and the intermediate gear is in meshed connection with the driven gear.
Preferably, the transmission locking structure comprises a connecting shaft, a transmission groove, a transmission column and a spring, the driving gear faces to the center of the side face of the intermediate gear, the connecting shaft is arranged in the shaft hole of the intermediate gear in a protruding mode, a plurality of transmission columns which are arranged along the radial direction of the connecting shaft are uniformly arranged on the outer circumferential side face of the connecting shaft, the transmission columns are connected with the outer circumferential side face of the connecting shaft through the spring, a plurality of transmission grooves are uniformly concaved along the radial direction of the inner circumferential side face of the shaft hole of the intermediate gear, and the driving gear is embedded into the transmission groove under the action of the spring through the transmission columns to be connected with the intermediate gear in a transmission mode.
Preferably, the transmission column is of a cone structure and is arranged towards the direction of the transmission groove at the tip end of the cone structure, the transmission groove is of a trapezoid groove structure, a sleeve structure extends towards the end part of the connecting shaft of the transmission column, and one end of the spring extends into the sleeve structure and is fixedly connected with the end face of the transmission column.
Preferably, the automatic locking piece comprises a ratchet wheel, a ratchet claw, a baffle and a stop lever, the ratchet wheel is coaxially connected with the driven gear, one end of the stop lever is rotationally connected with the center position of the ratchet wheel, the connecting rod is rotationally connected with the pull rod and the other end of the stop lever respectively, the ratchet claw is rotationally arranged above the ratchet wheel through a pin shaft, the baffle is arranged at the position of the stop lever between the ratchet claw and the ratchet wheel, the pull rod is driven by the connecting rod to drive the stop lever to rotate clockwise or anticlockwise so that the baffle is inserted or separated between the ratchet claw and the ratchet wheel, and therefore the ratchet claw is separated from or embedded into gear teeth of the ratchet wheel to unlock or lock the driven gear.
Compared with the prior art, the auxiliary supporting and positioning device provided by the invention can drive the jacking rod to lift and self-adaptively lean against the bottom surface of the workpiece by rotating the pull rod and transmitting through a series of transmission structures so as to realize the auxiliary supporting purpose, and the jacking rod height is not required to be adjusted by manual intervention in the lifting process, so that the operation is simple.
When the ejector rod is lifted in place, the transmission locking structure between the intermediate gear and the driving gear is connected with the transmission connection between the intermediate gear and the driving gear in a failure mode, and meanwhile, the baffle is driven by the pull rod to enable the baffle to rotate along the circumference of the ratchet wheel to be separated from the ratchet wheel and the ratchet pawl, so that the ratchet pawl is embedded into gear teeth of the ratchet wheel to lock the driven gear and further lock the ejector rod through rack transmission, and the ejector rod is kept to be abutted against the bottom surface of a workpiece. The device realizes self-locking through the ratchet wheel and the ratchet claw, thereby ensuring the stability and the reliability of the supporting device.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a prior art spiral auxiliary support structure;
FIG. 2 is a schematic diagram of a prior art push-pull auxiliary support structure;
FIG. 3 is a schematic structural view of an auxiliary supporting and positioning device according to the present invention;
FIG. 4 is a schematic view of the structure of the ejector pin, the jacking transmission member, the automatic locking member, the jacking driving member and the transmission locking structure;
FIG. 5 is a top view of FIG. 4;
fig. 6 is a schematic view of the operation of the automatic locking member.
Reference numerals and description of the components referred to in the drawings:
1. a push rod; 2. a pushing member; 3. wedge; 4. a base; 5. a workpiece; 6. a connecting rod; 7. a pull rod; 8. a semicircular gear; 9. a driven gear; 10. a drive gear; 11. a rack; 12. a strip-shaped accommodating cavity; 13. an intermediate gear; 14. a connecting shaft; 15. a transmission groove; 16. a drive column; 17. a spring; 18. a sleeve structure; 19. a ratchet wheel; 20. a ratchet pawl; 21. a baffle; 22. a stop lever; 23. and a pin shaft.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in the following detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 3 to 5, an auxiliary supporting and positioning device comprises a base 4, a push rod 1, a jacking transmission member, an automatic locking member and a jacking driving member. The base 4 serves as a load-bearing carrier for the entire device, which is arranged below the workpiece 5. Thereafter, the ejector pin 1 is provided as an auxiliary support body in contact with the bottom surface of the workpiece 5 movably in the axial direction thereof on the base 4. The jacking driving piece and the jacking driving piece are respectively arranged at the side of the base 4 positioned on the ejector rod 1, and simultaneously the jacking driving piece is respectively meshed and connected with the jacking driving piece and the side surface of the ejector rod 1, so that an operator can directly operate the jacking driving piece and drive the ejector rod 1 to move on the base 4 to contact with the bottom surface of the workpiece 5 in an abutting mode through the jacking driving piece. Furthermore, an automatic locking piece is coaxially arranged on the jacking transmission piece, the automatic locking piece is connected with the jacking driving piece through a connecting rod 6, and when the ejector rod 1 is in abutting contact with the bottom surface of the workpiece 5, the self-locking function of the automatic locking piece is provided to force the ejector rod 1 to keep in abutting contact with the bottom surface of the workpiece 5. The following describes the above components in detail:
the jacking driving piece comprises a pull rod 7 and a semicircular gear 8, wherein the semicircular gear 8 is rotatably arranged inside the base 4, the pull rod 7 is radially arranged along the semicircular gear 8, one end of the pull rod is fixedly connected with the center of the semicircular gear 8, and the other end of the pull rod extends to the outside of the base 4 so as to be convenient for an operator to hold.
The jacking transmission piece comprises a driven gear 9 and a driving gear 10, the driven gear 9 and the driving gear 10 are respectively arranged in the base 4 in a rotating mode and are positioned at the side of the ejector rod 1 and are in meshed connection, the driving gear 10 is in meshed connection with the semicircular gear 8, a rack 11 is further arranged at the side of the ejector rod 1 along the axial direction of the side of the ejector rod and is in meshed connection with the driven gear 9, and an operator drives the semicircular gear 8 to rotate clockwise or anticlockwise through rotating the pull rod 7 and drives the ejector rod 1 to ascend or descend through the meshed transmission of the driving gear 10, the driven gear 9 and the rack 11. In the process, an operator does not need to intervene to adjust the lifting height of the ejector rod 1 to adapt to the position of the workpiece 5, and only needs to rotate the pull rod 7 to lift the ejector rod 1 to be abutted against the bottom surface of the workpiece 5, so that the practical problem that the auxiliary supporting position needs to be readjusted when the workpiece 5 is processed every time is solved.
In order to limit the ejector rod 1 from being excessively lifted and being separated from the base 4, a strip-shaped accommodating cavity 12 is further arranged in the base 4 at a position which is positioned at the side of the ejector rod 1 along the axial direction of the ejector rod 1, a rack 11 is arranged in the strip-shaped accommodating cavity 12 and is fixedly connected with the side of the ejector rod 1, and a driven gear 9 is partially positioned in the strip-shaped accommodating cavity 12 and is meshed and connected with the rack 11. Meanwhile, the length of the strip-shaped accommodating cavity 12 is L, the length of the rack 11 is L, the arc length of the semicircular gear 8 is S, and the three are in the following relationship: l is more than or equal to 2L and less than or equal to S. The length of the strip-shaped accommodating cavity 12 is limited to limit the moving range of the rack 11, so that the purpose of limiting the jacking range of the ejector rod 1 is achieved.
After the ejector rod 1 is driven to be in abutting contact with the bottom surface of the workpiece 5, if an operator continuously rotates the pull rod 7 and forces the ejector rod 1 to push up through a series of structural transmissions, the meshing transmission between the rack 11 and the driven gear 9 and the meshing transmission between the driven gear 9 and the driving gear 10 and the semicircular gear 8 are damaged and fail. In order to avoid the occurrence of the above situation, an intermediate gear 13 is coaxially arranged on the driving gear 10, the intermediate gear 13 is meshed with the driven gear 9, and a transmission locking structure is arranged between the intermediate gear 13 and the driving gear 10, once the ejector rod 1 is in abutting contact with the bottom surface of the workpiece 5, the transmission locking structure timely releases the transmission connection between the intermediate gear 13 and the driving gear 10, so as to avoid continuous bearing and jacking of the ejector rod 1 through the transmission of the driven gear 9 and the rack 11.
The transmission locking structure comprises a connecting shaft 14, a transmission groove 15, a transmission column 16 and a spring 17, wherein the connecting shaft 14 is convexly arranged on the driving gear 10 towards the center of the side face of the intermediate gear 13, the connecting shaft 14 penetrates through the shaft hole of the intermediate gear 13, a plurality of transmission columns 16 which are radially arranged along the circumference outer side face of the connecting shaft 14 are uniformly arranged on the circumference outer side face of the connecting shaft 14, the transmission columns 16 are connected with the circumference outer side face of the connecting shaft 14 through the spring 17, a plurality of transmission grooves 15 are uniformly concavely arranged on the inner side face of the shaft hole of the intermediate gear 13 along the radial direction of the transmission columns, and the driving gear 10 is embedded into the transmission grooves 15 under the action of the spring 17 through the transmission columns 16 so as to be in transmission connection with the intermediate gear 13.
In this embodiment, the driving post 16 adopts a cone structure and is disposed toward the driving groove 15 at the tip of the cone structure, and the driving groove 15 adopts a trapezoid groove structure. In order to enhance the connection strength between the drive post 16 and the connecting shaft 14, a sleeve structure 18 extends at the end of the drive post 16 facing the connecting shaft 14, and one end of the spring 17 extends into the sleeve structure 18 and is fixedly connected with the end face of the drive post 16. During normal up-up or down-down movement of the ram 1, the drive post 16 is inserted into the drive slot 15 under the action of the spring 17 so that the intermediate gear 13 can rotate with the drive gear 10. Once the ejector rod 1 is abutted against the bottom surface of the workpiece 5, the ejector rod 1 is limited to further push up and is driven by the rack 11 to limit the driven gear 9 and the intermediate gear 13 to continue rotating, and at the moment, if the operator continues to rotate the pull rod 7 and drives the driving gear 10 to continue rotating, the driving post 16 connected with the connecting shaft 14 of the driving gear 10 compresses the spring 17 and is separated from the driving groove 15 on the intermediate gear 13, so that the driving connection between the intermediate gear 13 and the driving gear 10 is released. After that, if the transmission connection between the driving gear 10 and the intermediate gear 13 is restored, only the reverse rotation pull rod 7 is needed to drive the driving gear 10 to rotate reversely through the semicircular gear 8, and in the process, the transmission column 16 connected with the connecting shaft 14 of the driving gear 10 is embedded into the transmission groove 15 again, so that the intermediate gear 13 rotates together with the driving gear 10.
When the ejector rod 1 is in abutting contact with the bottom surface of the workpiece 5, the intermediate gear 13 and the driving gear 10 are in transmission connection, namely the driven gear 9 is not stressed to rotate any more, and then the driven gear 9 is kept in a locking state under the self-locking function of the automatic locking piece, and the ejector rod 1 is locked by the transmission of the rack 11 to keep abutting contact with the bottom surface of the workpiece 5. In this embodiment, the automatic locking member includes a ratchet 19, a pawl 20, a baffle 21 and a stop lever 22, where the ratchet 19 is coaxially connected with the driven gear 9, one end of the stop lever 22 is rotatably connected with the center position of the ratchet 19, the connecting rod 6 is rotatably connected with the other ends of the pull rod 7 and the stop lever 22, the pawl 20 is rotatably disposed above the ratchet 19 through a pin 23, and the stop lever 22 is provided with the baffle 21 at a position between the pawl 20 and the ratchet 19. The pull rod 7 is driven by the connecting rod 6 to drive the stop lever 22 to rotate clockwise or anticlockwise so as to enable the baffle 21 to be inserted or separated between the ratchet claw 20 and the ratchet 19, and accordingly the ratchet claw 20 is separated or embedded into gear teeth of the ratchet 19 to unlock or lock the driven gear 9.
The specific working process is as follows:
when the workpiece 5 needs auxiliary support, as shown in fig. 6, an operator rotates the pull rod 7 from the position C to the position C', the semicircular gear 8 rotates along with the pull rod 7, and the ejector rod 1 is lifted towards the bottom surface of the workpiece 5 through the cooperation transmission of the driving gear 10, the intermediate gear 13, the driven gear 9 and the rack 11. Simultaneously, the pull rod 7 rotates and is driven by the connecting rod 6 to enable the stop lever 22 to drive the baffle 21 to move from the position B to the position B', and the baffle 21 is separated from the ratchet 19 and the ratchet claw 20. At this time, since the jack 1 is in the process of moving up, the ratchet 19 is still in the state of rotating with the follower gear 9. Once the ejector rod 1 rises and moves to be in abutting contact with the bottom surface of the workpiece 5, the ejector rod 1 cannot continue to rise and move and is driven by the rack 11 to force the driven gear 9 and the intermediate gear 13 to continue to rotate, the pull rod 7 is still in the rotating process and is driven by the semicircular gear 8 to enable the driving gear 10 to continue to rotate, and at the moment, the transmission column 16 in the transmission locking structure is rotated out of the transmission groove 15 to be separated, so that the transmission connection between the driving gear 10 and the intermediate gear 13 is timely released. Since the driven gear 9 cannot continue to rotate, the ratchet 19 coaxially arranged with the driven gear 9 also stops rotating, and at this time, the ratchet claw 20 arranged above the ratchet 19 rotates from the position a to the position a' under the action of gravity, i.e. is embedded into the gear teeth of the ratchet 19 to lock the ratchet 19 for reverse rotation, so as to prevent the ejector rod 1 from moving downwards, and force the ejector rod to keep abutting contact with the bottom surface of the workpiece 5, thereby playing an auxiliary supporting role.
When the push rod 1 is required to move downwards to be separated from the bottom surface of the workpiece 5 after the use, a worker reversely rotates the pull rod 7 to rotate the push rod from the position C' to the position C, the semicircular gear 8 rotates along with the pull rod 7 and drives the driving gear 10 to reversely rotate, and in the process, the transmission column 16 on the driving gear 10 is re-embedded into the transmission groove 15 of the intermediate gear 13 to reestablish transmission connection between the driving gear 10 and the intermediate gear 13. Thereafter the intermediate gear 13 drives the driven gear 9 and the ratchet wheel 19 in reverse rotation, with the ratchet pawl 20 rotating out of the teeth of the ratchet wheel 19. At this time, the stop lever 22 rotates reversely with the pull rod 7 under the action of the connecting rod 6 to drive the baffle 21 to rotate from the position B' to the position B, namely to rotate again to the position between the ratchet wheel 19 and the ratchet claw 20, the locking of the ratchet claw 20 to the ratchet wheel 19 is completely released, and the pull rod 7 rotates reversely and drives the push rod 1 to move downwards under the multi-party cooperation transmission of the semicircular gear 8, the driving gear 10, the intermediate gear 13, the driven gear 9 and the rack 11.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. An auxiliary support positioner, its characterized in that: the lifting device comprises a base, a lifting rod, a lifting transmission piece, an automatic locking piece and a lifting driving piece, wherein the lifting rod is movably arranged on the base along the axial direction of the lifting rod, the lifting transmission piece and the lifting driving piece are respectively arranged at the side of the lifting rod, the lifting transmission piece is respectively meshed with the lifting driving piece and the side face of the lifting rod, and the lifting transmission piece is also coaxially provided with the automatic locking piece and is connected with the lifting driving piece through a connecting rod.
2. An auxiliary support positioning device according to claim 1, wherein: the jacking driving piece comprises a pull rod and a semicircular gear, the semicircular gear is rotationally arranged inside the base, the pull rod is radially arranged along the semicircular gear, one end of the pull rod is fixedly connected with the center of the semicircular gear, the other end of the pull rod extends to the outside of the base, the jacking driving piece comprises a driven gear and a driving gear, the driven gear and the driving gear are respectively rotationally arranged inside the base and are positioned at the side of the ejector rod and are in meshed connection with each other, the driving gear is in meshed connection with the semicircular gear, a rack is further arranged at the side of the ejector rod along the axial direction of the side of the ejector rod and is in meshed connection with the driven gear, and the semicircular gear is driven to rotate clockwise or anticlockwise through the rotation of the pull rod, so that the ejector rod ascends or descends through the meshed transmission of the driving gear, the driven gear and the rack.
3. An auxiliary support positioning device according to claim 2, wherein: the base is internally provided with a strip-shaped accommodating cavity along the axial direction of the ejector rod at the position of the side of the ejector rod, the rack is arranged in the strip-shaped accommodating cavity and fixedly connected with the side of the ejector rod, and the driven gear part is arranged in the strip-shaped accommodating cavity and meshed with the rack.
4. An auxiliary support positioning device according to claim 3, wherein: the length of the strip-shaped accommodating cavity is L, the length of the rack is L, and the arc length of the semicircular gear is S, wherein L is more than or equal to 2L and less than or equal to S.
5. An auxiliary support positioning device according to claim 2, wherein: the driving gear is also coaxially provided with an intermediate gear, the intermediate gear is in transmission connection with the driving gear through a transmission locking structure, and the intermediate gear is in meshed connection with the driven gear.
6. An auxiliary support positioning device according to claim 5, wherein: the transmission locking structure comprises a connecting shaft, a transmission groove, a transmission column and a spring, wherein the driving gear faces the center of the side face of the intermediate gear, the connecting shaft is arranged in the shaft hole of the intermediate gear in a protruding mode, a plurality of transmission columns which are arranged along the radial direction of the connecting shaft are uniformly arranged on the outer circumferential side face of the connecting shaft, the transmission columns are connected with the outer circumferential side face of the connecting shaft through the spring, a plurality of transmission grooves are uniformly concavely arranged on the inner axial side face of the intermediate gear along the radial direction of the inner axial side face of the intermediate gear, and the driving gear is embedded into the transmission groove under the action of the spring through the transmission columns to be in transmission connection with the intermediate gear.
7. An auxiliary support positioning device according to claim 6, wherein: the transmission column is of a cone structure and is arranged towards the direction of the transmission groove at the tip end of the cone structure, the transmission groove is of a trapezoid groove structure, a sleeve structure extends towards the end part of the connecting shaft of the transmission column, and one end of the spring extends into the sleeve structure and is fixedly connected with the end face of the transmission column.
8. An auxiliary support positioning device according to claim 2, wherein: the automatic locking piece comprises a ratchet wheel, a ratchet claw, a baffle and a stop lever, wherein the ratchet wheel is coaxially connected with the driven gear, one end of the stop lever is rotationally connected with the center position of the ratchet wheel, the connecting rod is rotationally connected with the pull rod and the other end of the stop lever respectively, the ratchet claw is rotationally arranged above the ratchet wheel through a pin shaft, the baffle is arranged at the position of the stop lever between the ratchet claw and the ratchet wheel, the pull rod is driven by the connecting rod to drive the stop lever to rotate clockwise or anticlockwise so as to enable the baffle to be inserted into or separated from the space between the ratchet claw and the ratchet wheel, and therefore the ratchet claw is separated from or embedded into gear teeth of the ratchet wheel to unlock or lock the driven gear.
CN202310757203.4A 2023-06-26 2023-06-26 Auxiliary supporting and positioning device Pending CN116638346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310757203.4A CN116638346A (en) 2023-06-26 2023-06-26 Auxiliary supporting and positioning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310757203.4A CN116638346A (en) 2023-06-26 2023-06-26 Auxiliary supporting and positioning device

Publications (1)

Publication Number Publication Date
CN116638346A true CN116638346A (en) 2023-08-25

Family

ID=87615516

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310757203.4A Pending CN116638346A (en) 2023-06-26 2023-06-26 Auxiliary supporting and positioning device

Country Status (1)

Country Link
CN (1) CN116638346A (en)

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