CN107715941B - Table leg structure of pantograph testboard - Google Patents
Table leg structure of pantograph testboard Download PDFInfo
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- CN107715941B CN107715941B CN201711035153.XA CN201711035153A CN107715941B CN 107715941 B CN107715941 B CN 107715941B CN 201711035153 A CN201711035153 A CN 201711035153A CN 107715941 B CN107715941 B CN 107715941B
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- table leg
- arc
- spring piece
- locking
- shaped spring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/02—Laboratory benches or tables; Fittings therefor
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- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Tables And Desks Characterized By Structural Shape (AREA)
Abstract
The invention discloses a table leg structure of a pantograph test bench, which comprises a first table leg arranged below a table top, wherein a telescopic cavity is arranged inside the first table leg, a second table leg is arranged in the telescopic cavity, and a table leg is arranged at the bottom of the second table leg; the first table leg is provided with a sliding groove, a locking block is arranged in the sliding groove and connected with one end of the tightening rod, and the other end of the tightening rod penetrates through the arc-shaped spring piece and the protective shell and then is rotatably assembled with the locking head; the right side of the contact part of the tightening rod and the arc-shaped spring piece is provided with an arc-shaped separation blade which is tightly contacted with the arc-shaped spring piece in a tightening way; the arc spring piece is made of elastic material; the protective shell comprises an installation cavity, wherein an arc-shaped spring piece is installed in the installation cavity; the jacking rod and the protective shell can slide relatively, a locking cylinder is further arranged on the protective shell, and the jacking rod penetrates through the locking cylinder; the outer wall of the locking cylinder is assembled with the inner cylinder of the locking head in a screwing way through threads; the locking block is tightly propped and fixed with the second table leg. The invention has simple structure and convenient use.
Description
Technical Field
The invention relates to the technical field of experimental instruments, in particular to a table leg structure of a pantograph test bench.
Background
The pantograph is installed on the top of locomotive or motor car, and can be used as electric equipment for obtaining electric energy from contact net in electric traction locomotive, and can be divided into single-arm pantograph and double-arm pantograph, and is formed from slide plate, upper frame, lower arm bar, bottom frame, pantograph-raising spring and driving cylinder, etc. and its load current can be passed through the contact line and smooth degree of contact surface of pantograph slide plate, and is related to contact pressure between slide plate and contact line, transition resistance and contact area, and depends on the interaction between pantograph and contact net.
At present, the height of the existing pantograph dynamic characteristic test experiment table is mostly fixed and cannot be adjusted, however, sometimes an operator needs to adjust the height of the experiment table according to self elevation so as to better complete an experiment or make a user feel more comfortable to use, and if the height of the experiment table cannot be adjusted, the user feels uncomfortable to use and possibly causes low experiment efficiency and increases the physical burden of the user.
Therefore, the applicant has considered that it is necessary to design a table leg structure of a pantograph test bench, which can adjust the height of the pantograph test bench according to the actual needs of a user, so as to make the user more comfortable to use.
Disclosure of Invention
In view of the above-mentioned defects in the prior art, the present invention provides a table leg structure of a pantograph testing table.
In order to achieve the purpose, the invention provides a table leg structure of a pantograph test bench, which comprises a first table leg arranged below a table top, wherein a telescopic cavity is arranged inside the first table leg, a second table leg is arranged in the telescopic cavity, and a table leg is arranged at the bottom of the second table leg;
the first table leg is provided with a sliding groove, a locking block is arranged in the sliding groove, the locking block is connected with one end of a puller rod, and the other end of the puller rod penetrates through the arc-shaped spring piece and the protective shell and then is rotatably assembled with the locking head;
the right side of the contact part of the tightening rod and the arc-shaped spring piece is provided with an arc-shaped blocking piece which is tightly contacted with the arc-shaped spring piece in a tightening way; the arc-shaped spring piece is made of elastic materials;
the protective shell comprises an installation cavity, wherein an arc-shaped spring piece is installed in the installation cavity;
the jacking rod and the protective shell can slide relatively, a locking cylinder is further arranged on the protective shell, and the jacking rod penetrates through the locking cylinder; the outer wall of the locking cylinder is assembled with the inner cylinder of the locking head in a screwing way through threads; the locking block is tightly fixed with the second table leg.
As a further improvement of the invention, a rubber layer is fixed outside the table legs.
As a further improvement of the invention, the periphery of the arc-shaped spring piece is at least 3 mm away from four side surfaces in the mounting cavity.
As a further improvement of the invention, the first table leg is hinged with the table top, and the table leg can rotate relative to the table top.
As a further improvement of the invention, the locking block is provided with a second barb, the contact surface of the second table leg and the locking block is provided with a first barb, and the first barb and the second barb are mutually occluded and fixed.
As a further improvement of the invention, the locking head is provided with a spherical groove, the spherical groove and the spherical surface arranged on the puller rod can be rotatably assembled, and lubricating oil is arranged between the spherical groove and the spherical surface.
The beneficial effects of the invention are: the height adjusting device is simple in structure and convenient to use, can adjust the height of the experiment table, is beneficial to better experiment of workers, and is simple and convenient to operate.
Drawings
Fig. 1 is a schematic structural view of a table leg structure of a pantograph test table according to an embodiment of the present invention.
Fig. 2 is an enlarged view of fig. 1 at F1.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-2, a table leg structure of a pantograph test bench includes a first table leg 200 disposed below a table top 100, wherein a telescopic cavity 201 is formed inside the first table leg 200, a second table leg 300 is installed inside the telescopic cavity 201, a table leg 310 is disposed at the bottom of the second table leg 300, a rubber layer is fixed outside the table leg 310, and the rubber layer is used for increasing the friction force between the table leg 310 and the ground to prevent the table leg from sliding;
the first table leg 200 is provided with a sliding groove 202, a locking block 510 is arranged in the sliding groove 202, the locking block 510 is connected with one end of a tightening rod 520, and the other end of the tightening rod 520 penetrates through an arc spring 710 and a protective shell 600 and then is rotatably assembled with a locking head 530;
an arc-shaped baffle plate 720 is arranged on the right side of the contact part of the tightening rod and the arc-shaped spring piece 710, and the arc-shaped baffle plate is tightly contacted with the arc-shaped spring piece 720 in a tightening way;
the arc spring piece is made of elastic materials, such as an elastic metal piece, an elastic plastic piece and the like;
the protective shell 600 comprises a mounting cavity 601, wherein an arc-shaped spring piece 710 is mounted in the mounting cavity 601, and the distance between the periphery of the arc-shaped spring piece 710 and four side surfaces in the mounting cavity is at least 3 mm, which is mainly used for providing a yielding space for the deformation of the arc-shaped spring piece;
the tightening rod 520 and the protective shell 600 can slide relatively (move in the axial direction of the tightening rod), the protective shell 600 is further provided with a locking cylinder 610, and the tightening rod 520 penetrates through the locking cylinder 610;
the outer wall of the locking cylinder 610 is assembled with the inner cylinder 532 of the locking head 530 through screwing;
the locking block is tightly propped and fixed with the second table leg;
when the height of the table legs needs to be adjusted, firstly, the locking head is rotated to enable the locking head to move rightwards, at the moment, the tightening rod can move rightwards under the action of the arc-shaped spring piece to drive the locking block to move rightwards to be separated from the second table legs, and at the moment, the second table legs can be pulled out from the telescopic cavity to adjust the height of the second table legs.
Furthermore, four table legs are arranged below the table top, the height of each table leg can be adjusted one by one, the first table legs can be hinged to the table top, so that the table legs can rotate relative to the table top, the table legs can be rotated before the length of the table legs is adjusted, the table legs are adjusted after not being contacted with the bottom surface, and the table legs are adjusted more conveniently.
Further, locking block 410 on be equipped with second barb 420, second table leg and locking block contact surface on be equipped with first barb 410, first barb and second barb interlock each other fixed to improve the frictional force between locking block and the second table leg in order to fix the second table leg better.
Furthermore, the locking head 530 is provided with a spherical groove 531, the spherical groove 531 is rotatably assembled with the spherical surface 521 arranged on the tightening rod 520, and lubricating oil is arranged between the spherical groove and the spherical surface. When the structure is used, the friction force between the jacking rod and the locking head can be reduced, so that a user can save more labor.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (1)
1. The utility model provides a table leg structure of pantograph testboard, includes, sets up in the first table leg of desktop below, characterized by: a telescopic cavity is arranged in the first table leg, a second table leg is arranged in the telescopic cavity, and a table foot is arranged at the bottom of the second table leg; the first table leg is provided with a sliding groove, a locking block is arranged in the sliding groove, the locking block is connected with one end of the tightening rod, and the other end of the tightening rod penetrates through the arc-shaped spring piece and the protective shell and then is rotatably assembled with the locking head; the right side of the contact part of the tightening rod and the arc-shaped spring piece is provided with an arc-shaped blocking piece which is tightly contacted with the arc-shaped spring piece in a tightening way; the arc-shaped spring piece is made of elastic materials; the protective shell comprises an installation cavity, wherein an arc-shaped spring piece is installed in the installation cavity; the jacking rod and the protective shell can relatively slide, a locking cylinder is further arranged on the protective shell, and the jacking rod penetrates through the locking cylinder; the outer wall of the locking cylinder is assembled with the inner cylinder of the locking head in a screwing way through threads; the locking block is tightly propped and fixed with the second table leg; a rubber layer is fixed outside the table legs; the distance between the periphery of the arc-shaped spring piece and four side surfaces in the mounting cavity is at least 3 mm; the first table legs are hinged with the table top, and the table legs can rotate relative to the table top; the locking block is provided with a second barb, the contact surface of the second table leg and the locking block is provided with a first barb, and the first barb and the second barb are mutually occluded and fixed; the locking head on be equipped with the sphere groove, sphere groove and the rotatable assembly of sphere that sets up on the tightening rod, just sphere groove and sphere between be equipped with lubricating oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711035153.XA CN107715941B (en) | 2017-10-30 | 2017-10-30 | Table leg structure of pantograph testboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711035153.XA CN107715941B (en) | 2017-10-30 | 2017-10-30 | Table leg structure of pantograph testboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107715941A CN107715941A (en) | 2018-02-23 |
| CN107715941B true CN107715941B (en) | 2023-03-14 |
Family
ID=61203325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711035153.XA Active CN107715941B (en) | 2017-10-30 | 2017-10-30 | Table leg structure of pantograph testboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107715941B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3163497U (en) * | 2010-04-27 | 2010-10-21 | 呉 耀全 | Chair control device lead control rod |
| CN201743276U (en) * | 2010-08-02 | 2011-02-16 | 北京励耕家具有限公司 | Table leg |
| CN204561472U (en) * | 2015-04-19 | 2015-08-19 | 宿州学院 | A kind of desk or chair legs height adjuster |
| CN205795252U (en) * | 2016-05-25 | 2016-12-14 | 长安大学 | A kind of adjustable-height and the desk turned to |
| CN207493732U (en) * | 2017-10-30 | 2018-06-15 | 大同新成新材料股份有限公司 | A kind of leg structure of collapsible of pantograph testboard |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6581528B2 (en) * | 2001-11-09 | 2003-06-24 | Shin Yeh Enterprise Co., Ltd. | Table with telescopic leg unit |
-
2017
- 2017-10-30 CN CN201711035153.XA patent/CN107715941B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3163497U (en) * | 2010-04-27 | 2010-10-21 | 呉 耀全 | Chair control device lead control rod |
| CN201743276U (en) * | 2010-08-02 | 2011-02-16 | 北京励耕家具有限公司 | Table leg |
| CN204561472U (en) * | 2015-04-19 | 2015-08-19 | 宿州学院 | A kind of desk or chair legs height adjuster |
| CN205795252U (en) * | 2016-05-25 | 2016-12-14 | 长安大学 | A kind of adjustable-height and the desk turned to |
| CN207493732U (en) * | 2017-10-30 | 2018-06-15 | 大同新成新材料股份有限公司 | A kind of leg structure of collapsible of pantograph testboard |
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| Publication number | Publication date |
|---|---|
| CN107715941A (en) | 2018-02-23 |
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