Drawing holder

Abstract

The utility model relates to the technical field of drawing devices, in particular to a drawing frame which comprises a workbench and a second drawing board which is arranged on the workbench and hinged to a first drawing board through a hinge. An angle adjusting assembly connected with the second drawing board is arranged on the workbench, fixing needles are fixedly connected to the corners of the opposite sides of the top ends of the first drawing board and the second drawing board, pressing assemblies used for pressing drawings are arranged on the two sides of the top ends, making contact with each other, of the first drawing board and the second drawing board, and each pressing assembly comprises a pressing roller. One end of the hold-down roller is sleeved with a bearing seat, the bottom of the bearing seat is connected with a sliding block, and the bottom of the sliding block is sleeved with a guide rail fixedly connected with the top end of the workbench. According to the drawing frame, the situation that the drawing size deviates from the original size during drawing can be avoided, and the drawing drawing stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drawing devices, in particular to a drawing stand. Background Art

[0002] Drawing racks are commonly used in power plant design work sites during the manual drawing process of power plants. Drawing racks are used to facilitate drawing on site.

[0003] In the related art, a drawing device for power plant design is proposed, in which a second drawing board is supported by a hydraulic rod, and the angle of the second drawing board is adjusted by screwing the support rod and the fixing hole, which is convenient for drawing and easy to adjust. However, when the angle of the second drawing board changes, a triangle state is formed between the drawing and the first and second drawing boards. Then, under the action of the drawing itself and the fixing pin, the drawing located at the first and second drawing boards is separated from the first and second drawing boards, and the initial position of the drawing may change, causing the size of the drawn drawing to deviate from the original size. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. A drawing stand in an embodiment of the utility model can prevent the drawing size from deviating from the original size when drawing, and improve the stability of drawing.

[0005] The drawing stand of the embodiment of the utility model comprises a workbench and a second drawing board arranged on the workbench and hingedly connected to the first drawing board through a hinge, comprising:

[0006] Angle adjustment component, fixing pin and holding component, the workbench is provided with an angle adjustment component connected with the No. 2 drawing board, the corners of the No. 1 drawing board and the No. 2 drawing board on the opposite side of the top are fixedly connected with fixing pins, and the two sides of the top of the No. 1 drawing board and the No. 2 drawing board are provided with holding components for holding drawings, the holding component includes a holding roller, the outer sleeve of one end of the holding roller is provided with a bearing seat, the bottom of the bearing seat is connected with a slider, and the bottom of the slider is sleeved with a guide rail fixedly connected with the top of the workbench;

[0007] A spring is provided between one end of the slider facing the No. 1 drawing board and the guide rail, and the spring abuts against the slider to keep the holding roller in contact with the No. 1 drawing board or the No. 2 drawing board.

[0008] In some embodiments, a guide groove is provided on the side of the workbench adjacent to the No. 2 drawing board, and the angle adjustment assembly includes a driving screw, a support rod, an internally threaded sleeve and a hinge seat which are rotatably inserted on the workbench through the guide groove. The external thread sleeve of the driving screw is provided with an internally threaded sleeve, and both ends of the support rod are hinged with hinge seats which are respectively fixedly connected to the bottom end of the No. 2 drawing board and the top end of the internally threaded sleeve.

[0009] In some embodiments, the angle adjustment assembly further includes a drive motor, and the drive motor is fixedly mounted on one end of the workbench, and the output end of the drive motor is fixedly connected to the end of the drive screw.

[0010] In some embodiments, the angle adjustment assembly includes a handle, which is fixedly connected to the end of the drive screw.

[0011] In some embodiments, the outer sleeve of the bearing seat is provided with a bracket fixedly connected to the top of the slider, the top of the bracket is threadedly inserted with a first screw rod rotatably connected to the top of the bearing seat, and the top of the first screw rod is fixedly connected to a rotary plate.

[0012] In some embodiments, vertical grooves are provided on both sides of the bracket, and a limit block fixedly connected to the bearing seat is slidably sleeved inside the vertical groove.

[0013] In some embodiments, a guide rod is slidably inserted into the slider and the inner ring of the spring and is threadedly connected to the top of the guide rail.

[0014] In some embodiments, an extrusion block sleeved on the outside of the guide rod is provided between the spring and the guide rail, a second screw rod rotatably connected to the extrusion block is threadedly inserted on the guide rail, and one end of the second screw rod is fixedly connected to a driving plate.

[0015] In some embodiments, the holding roller is rotatably connected to the bearing seat.

[0016] In some embodiments, the drawing rack further includes a limit block, the limit block is disposed at one end of the guide rod away from the extrusion block, and the limit block is connected to the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a drawing frame according to an embodiment of the utility model.

[0018] Figure 2 for Figure 1 Enlarged schematic diagram at point A in the middle.

[0019] Figure 3 This is a diagram showing the state of the No. 2 drawing board after the angle is adjusted.

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of point B in the middle.

[0021] Workbench 1, drawing board No. 1 2, drawing board No. 2 3, fixed needle 4, holding assembly 5, bearing seat 511, bracket 511, first screw 512, limit block 513, holding roller 52, guide rail 53, guide rod 531, slider 54, spring 55, extrusion block 56, second screw 57, guide groove 6, angle adjustment assembly 7, driving screw 71, internal threaded sleeve 711, driving motor 712, support rod 72, hinged seat 721. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention in detail, and examples of the embodiments are shown in the accompanying drawings. Figures 1 to 4 The described embodiments are exemplary and intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0023] refer to Figures 1 to 4 Described below, the drawing rack of the utility model embodiment includes a workbench 1 and a No. 2 drawing board 3 arranged on the workbench 1 and hinged to the No. 1 drawing board 2 through a hinge, including: a spring 55, an angle adjustment component 7, a fixing pin 4 and a holding component 5. The workbench 1 is provided with an angle adjustment component 7 connected to the No. 2 drawing board 3, the corners on the opposite side of the top of the No. 1 drawing board 2 and the No. 2 drawing board 3 are fixedly connected with the fixing pin 4, and the two sides of the top where the No. 1 drawing board 2 and the No. 2 drawing board 3 are in contact are provided with a holding component 5 for holding the drawing, the holding component 5 includes a holding roller 52, the outer sleeve of one end of the holding roller 52 is provided with a bearing seat 511, the bottom of the bearing seat 511 is connected to a slider 54, the bottom of the slider 54 is sleeved with a guide rail 53 fixedly connected to the top of the workbench 1, a spring 55 is provided between the end of the slider 54 facing the No. 1 drawing board 2 and the guide rail 53, the spring 55 abuts against the slider 54 to keep the holding roller 52 in contact with the No. 1 drawing board 2 or the No. 2 drawing board 3.

[0024] Specifically, the angle adjustment component 7 is disposed on the upper end surface of the workbench 1, and the upper end of the angle adjustment component 7 is pivotally connected to the second drawing board 3, so that the angle adjustment component 7 can make the second drawing board 3 flip relative to the first drawing board 2 in the vertical direction.

[0025] The edge of the drawing is pressed and held at the top of the hinge of the No. 1 drawing board 2 and the No. 2 drawing board 3 by the pressing roller 52, so as to improve the fit between the drawing and the drawing board, ensure the stability of the drawing, improve the work efficiency and ensure the work quality, and avoid the drawing in contact with the No. 1 drawing board 3 from being separated from the drawing board due to its own action when the angle of the No. 2 drawing board 3 is adjusted, resulting in the change of the initial position of the drawing and the deviation of the size of the drawn drawing from the original size;

[0026] When in use, first pass the drawing through the bottom of the pressure roller 52, and then fix the four corners of the drawing on the fixing pins 4 on the No. 1 drawing board 2 and the No. 2 drawing board 3 respectively; then, in the process of adjusting the angle of the No. 2 drawing board 3, the No. 2 drawing board 3 will generate an extrusion force on the squeezing roller 52, so that the squeezing roller 52 drives the bearing seat 51 to move in the direction close to the No. 1 drawing board 2; while the bearing seat 51 moves, it drives the slider 54 to move along the top of the guide rail 53; under the elastic force of the spring 55, the outer wall of the pressure roller 52 always keeps in contact with the end faces of the No. 1 drawing board 2 and the No. 2 drawing board 3.

[0027] Furthermore, in order to ensure that the outer wall of the pressing roller 52 always keeps in contact with the end faces of the drawing board No. 1 2 and the drawing board No. 2 3 following the angle change of the drawing board No. 2, a spring 55 is arranged between the end of the slider 54 facing the drawing board No. 1 2 and the guide rail 53; the spring 55 is initially in a state of being squeezed and stored, and the elastic force of the spring can ensure that the outer wall of the pressing roller 52 always keeps in contact with the end faces of the drawing board No. 1 2 and the drawing board No. 2 3 during the angle change of the drawing board No. 2.

[0028] The drawing stand of the embodiment of the utility model can facilitate the holding of the No. 2 drawing board when adjusting the angle of the No. 2 drawing board by providing a holding roller 52 and an angle adjustment component. At the same time, the squeezing roller 52 drives the bearing seat 51 to move in the direction close to the No. 1 drawing board 2. The movement of the bearing seat 51 drives the slider 54 to move along the top of the guide rail 53. Under the elastic force of the spring 55, the outer wall of the holding roller 52 is always kept in contact with the end faces of the No. 1 drawing board 2 and the No. 2 drawing board 3, thereby preventing the drawing in contact with the No. 1 drawing board 2 from detaching from the drawing board due to its own action, resulting in a change in the initial position of the drawing and causing the size of the drawn drawing to deviate from the original size.

[0029] In some embodiments, the angle adjustment assembly 7 includes a driving screw 71 and a support rod 72 that are rotatably inserted into the workbench 1 through the guide groove 6. The external thread sleeve of the driving screw 71 is provided with an internal thread sleeve 711, and both ends of the support rod 72 are hinged with hinge seats 721 that are respectively fixedly connected to the bottom end of the No. 2 drawing board 3 and the top end of the internal thread sleeve 711. A driving motor 712 is fixedly installed at one end of the workbench 1, and the output end of the driving motor 712 is fixedly connected to the end of the driving screw 71; the driving motor 712 drives the driving screw 71 to rotate, and the angle of the No. 2 drawing board 3 is adjusted under the action of the internal thread sleeve 711 and the support rod 72, namely the hinge seat 721; when in use, when the driving screw 711 is rotated clockwise, one end of the No. 2 drawing board 3 moves upward, and when the driving screw 711 is rotated counterclockwise, one end of the No. 2 drawing board 3 moves downward.

[0030] In some embodiments, the angle adjustment assembly 7 includes a handle, which is fixedly connected to the end of the driving screw 71711. That is, the handle is connected to the end of the driving screw extending out of the workbench 1, so that the staff can manually adjust the angle of the second drawing board 33.

[0031] Furthermore, the outer sleeve of the bearing seat 51 is provided with a bracket 511 fixedly connected to the top of the slider 54, the top of the bracket 511 is threadedly inserted with a first screw 512 rotatably connected to the top of the bearing seat 51, and the top of the first screw 512 is fixedly connected to a rotary plate; the position of the bearing seat 51 and the holding roller 52 can be adjusted up and down through the first screw 512, which is convenient for installation and positioning of the drawing.

[0032] Furthermore, vertical grooves are provided on both sides of the bracket 511, and a limit block 513 fixedly connected to the bearing seat 51 is slidably sleeved inside the vertical groove; the outer wall of the limit block 513 fits with the inner wall of the vertical groove, which can continue to limit the axial direction of the bearing seat 51 and facilitate the up and down movement of the bearing seat 51.

[0033] In some embodiments, a guide rod 531 is slidably inserted on the inner ring of the slider 54 and the spring 55 and is threadedly connected to the top of the guide rail 53. The guide rod guides the movement of the slider. The guide rail and the guide rod can be understood as the guide rail device in the prior art.

[0034] In some embodiments, an extrusion block 56 sleeved on the outside of the guide rod 531 is provided between the spring 55 and the guide rail 53, and a second screw rod 57 rotatably connected to the extrusion block 56 is threadedly inserted on the guide rail 53, and one end of the second screw rod 57 is fixedly connected to the driving plate.

[0035] Specifically, during use, when the first screw 512 is rotated counterclockwise, the first screw 512 drives the bearing seat 51 to move upward, making it convenient for the drawing to pass through the bottom end of the holding roller 52; when the first screw 512 is rotated clockwise, the first screw 512 drives the bearing seat 51 to move downward, making it convenient to hold the drawing at the top where the No. 1 drawing board 2 and the No. 2 drawing board 3 are in contact.

[0036] A guide rod 531 is slidably inserted between the slider 54 and the inner circle of the spring 55 and is threadedly connected to the top of the guide rail 53; the guide rod 531 can prevent the spring 55 from being deformed, thereby increasing the service life of the spring 55; the guide rod 531 is connected to the guide rail 53 by a threaded connection, which facilitates the replacement of the spring 55.

[0037] In some embodiments, the holding roller 52 is rotatably connected to the bearing seat 511. This avoids damage to the drawing and improves the safety of use.

[0038] In some embodiments, the drawing rack further includes a limit block, which is disposed at one end of the guide rod away from the extrusion block, and the limit block is connected to the guide rail.

[0039] Specifically, the limit block is arranged at one end of the guide rod away from the extrusion block, and the lower end of the limit block is connected to the guide rail. The limit block prevents the slider from moving beyond the set range on the guide rail, prevents the slider from detaching from the guide rail or guide rod, and improves the stability and safety of the spring when in use.

[0040] Furthermore, if Figure 3 and Figure 4 As shown, an extrusion block 56 sleeved on the outside of the guide rod 531 is provided between the spring 55 and the guide rail 53, and a second screw rod 57 rotatably connected to the extrusion block 56 is threadedly inserted on the guide rail 53, and one end of the second screw rod 57 is fixedly connected to a driving plate; the position of the extrusion block 56 on the guide rail 53 is adjusted by the second screw rod 57, so that the extrusion force of the spring 55 on the slider 54 can be adjusted, further ensuring that the outer wall of the holding roller 52 always keeps in contact with the end faces of the No. 1 drawing board 2 and the No. 2 drawing board 3 during the angle change process, avoiding the phenomenon that the elastic force of the spring is reduced after excessive use and the extrusion force on the slider 54 is insufficient; when in use, when the second screw rod 57 is rotated clockwise, the extrusion block 56 moves in the direction close to the slider 54, and when the second screw rod 57 is rotated counterclockwise, the extrusion block 56 moves in the direction away from the slider 54.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A drawing stand, comprising a workbench and a second drawing board arranged on the workbench and hinged to a first drawing board through a hinge, characterized in that: include: Angle adjustment component, fixing pin and holding component, the workbench is provided with an angle adjustment component connected with drawing board No. 2, the corners on the opposite side of the top of drawing board No. 1 and drawing board No. 2 are fixedly connected with fixing pins, both sides of the contacting top of drawing board No. 1 and drawing board No. 2 are provided with holding components for holding drawings, the holding component comprises a holding roller, the outer sleeve of one end of the holding roller is provided with a bearing seat, the bottom of the bearing seat is connected with a slider, the bottom of the slider is sleeved with a guide rail fixedly connected with the top of the workbench; a spring, a spring is provided between the end of the slider facing drawing board No. 1 and the guide rail, the spring abuts against the slider to keep the holding roller in contact with drawing board No. 1 or drawing board No.

2.

2. The drawing stand according to claim 1, characterized in that: A guide groove is provided on the side of the workbench adjacent to the No. 2 drawing board. The angle adjustment assembly includes a driving screw, a support rod, an internally threaded sleeve and a hinged seat which are rotatably inserted on the workbench through the guide groove. The external thread sleeve of the driving screw is provided with an internally threaded sleeve, and both ends of the support rod are hinged with hinged seats which are respectively fixedly connected to the bottom end of the No. 2 drawing board and the top end of the internally threaded sleeve.

3. The drawing stand according to claim 2, characterized in that: The angle adjustment assembly also includes a drive motor. The drive motor is fixedly mounted on one end of the workbench, and the output end of the drive motor is fixedly connected to the end of the drive screw.

4. The drawing stand according to claim 2, characterized in that: The angle adjustment assembly comprises a handle, and the handle is fixedly connected to the end of the driving screw rod.

5. The drawing stand according to claim 1, characterized in that: The outer sleeve of the bearing seat is provided with a bracket fixedly connected to the top of the slider, the top of the bracket is threadedly inserted with a first screw rod rotatably connected to the top of the bearing seat, and the top of the first screw rod is fixedly connected to a rotary plate.

6. The drawing stand according to claim 5, characterized in that: Vertical grooves are provided on both sides of the bracket, and the interior of the vertical grooves is slidably sleeved with limit blocks fixedly connected to the bearing seat.

7. The drawing stand according to claim 1, characterized in that: A guide rod which is threadedly connected to the top of the guide rail is slidably inserted on the slider and the inner ring of the spring.

8. The drawing stand according to claim 7, characterized in that: An extrusion block sleeved on the outside of the guide rod is arranged between the spring and the guide rail, a second screw rod rotatably connected to the extrusion block is threadedly inserted on the guide rail, and one end of the second screw rod is fixedly connected to a driving plate.

9. The drawing stand according to claim 1, characterized in that: The holding roller is rotatably connected to the bearing seat.

10. The drawing stand according to claim 8, characterized in that: It also includes a limit block, which is arranged at one end of the guide rod away from the extrusion block, and the limit block is connected to the guide rail.

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