Bid invitation device

Abstract

The utility model relates to the technical field of building engineering bid invitation, in particular to a bid invitation device which comprises a base, a motor is fixedly connected to one side of the base, a stand column is fixedly connected to the output end of the motor, a sliding groove is fixedly connected to the top of the stand column, and two movable frames are slidably connected into the sliding groove. A bidirectional lead screw is rotationally connected to the interior of the sliding groove, and bid invitation display boards are hinged to the two sides of each movable frame correspondingly. The bid invitation display device has the advantages that the four bid invitation display boards are symmetrically arranged to form a rhombus structure, when the adjacent bid invitation display boards are perpendicular to one another, a square structure is formed, display can be conducted towards four sides at the same time, the display range of the device is wider, meanwhile, the motor is matched to drive the stand column to rotate, rotary display can be achieved, and the display effect is good. When the bid invitation display board does not need to be displayed, the bid invitation display board is adjusted to be in a flat rhombus shape, and the occupied space is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering bidding, in particular to a bidding device. Background Art

[0002] A construction project refers to an engineering entity formed through the construction of various types of buildings and their ancillary facilities and the installation of supporting lines, pipelines, and equipment. Among them, "buildings" refer to projects with roofs, beams, columns, walls, foundations, and internal spaces that can meet people's needs for production, residence, study, and public activities. When it comes to construction projects, engineering management bidding devices will be used.

[0003] However, the engineering management bidding devices currently on the market are not convenient for displaying and hanging bidding documents during use, which affects the progress of bidding work.

[0004] In this regard, the utility model proposes a bidding device to solve this problem. Utility Model Content

[0005] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0006] Therefore, one purpose of the utility model is to provide a bidding device to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0007] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the utility model provides a bidding device, including a base, a motor is fixedly connected to one side of the base, a column is fixedly connected to the output end of the motor, a slide is fixedly connected to the top of the column, two movable frames are slidably connected inside the slide, a bidirectional screw is rotatably connected inside the slide, a bidding display board is hinged on both sides of each of the movable frames, and a fixing device is installed on one side of each of the bidding display boards.

[0008] Preferably, any of the above schemes has four corners at the bottom of the base fixedly connected to a leg respectively, and a universal wheel is fixedly connected to the bottom of each leg.

[0009] The technical effect achieved by adopting the above solution is that the universal wheels are provided to facilitate the movement of the entire device.

[0010] Preferably, any of the above schemes has a rotating hole at the top of the base, a rotating shaft is fixedly connected to the bottom of the column, and an outer surface of the rotating shaft is rotatably connected to the inside of the rotating hole and fixedly connected to the output end of the motor.

[0011] Preferably, any of the above schemes has threads on both sides of the bidirectional screw rod in opposite directions, and a handle is fixedly connected to one side of the bidirectional screw rod.

[0012] The technical effect achieved by adopting the above solution is that the handle can conveniently rotate the bidirectional screw rod.

[0013] Preferably, any of the above schemes has a slider fixedly connected to the bottom of the movable frame, the outer surface of the slider is matched with the inner surface of the slide groove, and the outer surface of the slider is slidably connected to the inner surface of the slide groove.

[0014] Preferably, one side of each of the sliders is provided with a threaded hole, the inner surface of the threaded hole is matched with the outer surface of the bidirectional screw, and the two threaded holes are respectively threadedly connected to the outer surfaces on both sides of the bidirectional screw.

[0015] Preferably, from any of the above schemes, both sides of each of the movable frames are fixedly connected with a first hinge shaft, one side of each of the bidding display boards is provided with a first axial hole, and the inner surface of the first axial hole is hinged to the outer surface of the first hinge shaft.

[0016] Preferably, any of the above schemes is that one side of two of the bidding display boards is fixedly connected with a second hinge shaft, and one side of the other two bidding display boards is provided with a second shaft hole, and the inner surface of the second shaft hole is hinged to the outer surface of the second hinge shaft.

[0017] Preferably, any of the above schemes is that the fixing device includes two limit shafts, one side of each limit shaft is fixedly connected to a limit block, the limit shaft is fixedly connected to one side of the bidding display board, the outer surfaces of the two limit shafts are slidably connected to a pressure plate, the outer surface of each limit shaft is sleeved with a spring, and the spring is arranged between the pressure plate and the limit block.

[0018] The technical effect achieved by adopting the above solution is: fixed display of the documents to be displayed in the bidding.

[0019] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0020] The utility model arranges four bidding display boards which are driven to move by two moving frames. The four bidding display boards are symmetrically arranged and move synchronously to form a rhombus structure. When adjacent bidding display boards are perpendicular to each other, they form a square structure, which can be displayed facing four sides at the same time, so that the display range of the device is wider. At the same time, the motor drives the column to rotate, so that the rotating display can be realized, which is more convenient to use. When the display is not needed, the shape of the bidding display board is adjusted to a flatter rhombus to reduce the occupied space.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a schematic diagram of the first state structure according to an embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the second state structure according to an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of a column structure according to an embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of the structure of a mobile frame according to an embodiment of the utility model;

[0027] Figure 5 The figure is a schematic diagram of the structure of a bidding display board according to an embodiment of the utility model.

[0028] In the figure: 1-base, 101-universal wheel, 2-motor, 3-column, 301-rotating shaft, 4-slide, 5-movable frame, 501-slider, 502-threaded hole, 503-first hinge axis, 6-bidirectional screw rod, 601-handle, 7-tender display board, 701-first axis hole, 702-second hinge axis, 8-fixing device, 801-limiting axis, 802-pressure plate, 803-spring. DETAILED DESCRIPTION

[0029] like Figures 1 to 5 As shown, a bidding device includes a base 1, one side of the base 1 is fixedly connected to a motor 2, the output end of the motor 2 is fixedly connected to a column 3, the top of the column 3 is fixedly connected to a slide 4, the inside of the slide 4 is slidably connected to two mobile frames 5, the inside of the slide 4 is rotatably connected to a bidirectional screw 6, each of the two sides of the mobile frame 5 is respectively hinged with a bidding display board 7, one side of each bidding display board 7 is installed with a fixing device 8, the motor 2 in the utility model is powered by the mobile power supply of the device and is controlled by existing mature technology, which will not be repeated here.

[0030] The four corners of the bottom of the base 1 are respectively fixedly connected with a support leg, and the bottom of each support leg is fixedly connected with a universal wheel 101. The universal wheel 101 is provided to facilitate the movement of the entire device.

[0031] A rotating hole is formed at the top of the base 1 , and a rotating shaft 301 is fixedly connected to the bottom of the column 3 . The outer surface of the rotating shaft 301 is rotatably connected to the inside of the rotating hole and is fixedly connected to the output end of the motor 2 .

[0032] The threads on both sides of the bidirectional screw rod 6 are in opposite directions. A handle 601 is fixedly connected to one side of the bidirectional screw rod 6. When the bidirectional screw rod 6 is rotated, the two sliders 501 threadedly connected to it will move synchronously in opposite directions in the slide groove 4. Setting the handle 601 can make it more convenient to rotate the bidirectional screw rod 6.

[0033] A slider 501 is fixedly connected to the bottom of the moving frame 5 . The outer surface of the slider 501 is matched with the inner surface of the slide groove 4 . The outer surface of the slider 501 is slidably connected to the inner surface of the slide groove 4 .

[0034] A threaded hole 502 is formed on one side of each slider 501 . The inner surface of the threaded hole 502 matches the outer surface of the bidirectional screw rod 6 . The two threaded holes 502 are respectively threadedly connected to the outer surfaces of the two sides of the bidirectional screw rod 6 .

[0035] Both sides of each mobile frame 5 are fixedly connected with a first hinge shaft 503 , and one side of each bidding display board 7 is provided with a first shaft hole 701 , and the inner surface of the first shaft hole 701 is hinged to the outer surface of the first hinge shaft 503 .

[0036] One side of two of the bidding display boards 7 is fixedly connected with the second hinge shaft 702, and one side of the other two bidding display boards 7 is provided with a second shaft hole, the inner surface of the second shaft hole is hinged to the outer surface of the second hinge shaft 702, and the four bidding display boards 7 are symmetrically arranged and move synchronously to form a diamond structure. When the adjacent bidding display boards 7 are perpendicular to each other, a square structure is formed, which can be displayed on four sides at the same time, making the display range of the device wider. At the same time, the motor 2 drives the column 3 to rotate, so as to realize the rotating display, which is more convenient to use. When the display is not needed, the shape of the bidding display board 7 is adjusted to a flatter diamond to reduce the occupied space.

[0037] The fixing device 8 includes two limit shafts 801, one side of each limit shaft 801 is fixedly connected to a limit block, the limit shaft 801 is fixedly connected to one side of the bidding display board 7, the outer surfaces of the two limit shafts 801 are slidably connected to a pressure plate 802, the outer surface of each limit shaft 801 is sleeved with a spring 803, the spring 803 is arranged between the pressure plate 802 and the limit block, when the bidding document needs to be fixed and displayed, the pressure plate 802 is pulled up by the handle on the pressure plate 802, and then the bidding document is placed between the pressure plate 802 and the bidding display board 7, and the pressure plate 802 is released. At this time, the elasticity of the spring 803 will press down the pressure plate 802 to press and display the bidding document.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] The utility model arranges four bidding display boards 7 driven by two moving frames 5, and the four bidding display boards 7 are symmetrically arranged and move synchronously to form a rhombus structure. When adjacent bidding display boards 7 are perpendicular to each other, a square structure is formed, and display can be carried out facing four sides at the same time, so that the display range of the device is wider. At the same time, the motor 2 drives the column 3 to rotate, so that rotating display can be realized, which is more convenient to use. When display is not needed, the shape of the bidding display board 7 is adjusted to a flatter rhombus to reduce the occupied space.

Claims

1. A bidding device, characterized in that: The invention comprises a base (1), one side of the base (1) is fixedly connected to a motor (2), the output end of the motor (2) is fixedly connected to a column (3), the top of the column (3) is fixedly connected to a slide groove (4), the interior of the slide groove (4) is slidably connected to two moving frames (5), the interior of the slide groove (4) is rotatably connected to a bidirectional screw rod (6), both sides of each moving frame (5) are respectively hinged to a bidding display board (7), and one side of each bidding display board (7) is installed with a fixing device (8).

2. A bidding device according to claim 1, characterized in that: The four corners of the bottom of the base (1) are respectively fixedly connected to a support leg, and the bottom of each support leg is fixedly connected to a universal wheel (101).

3. A bidding device according to claim 2, characterized in that: A rotating hole is formed at the top of the base (1), a rotating shaft (301) is fixedly connected to the bottom of the column (3), and the outer surface of the rotating shaft (301) is rotatably connected to the inside of the rotating hole and is fixedly connected to the output end of the motor (2).

4. A bidding device according to claim 3, characterized in that: The threads on both sides of the bidirectional screw rod (6) are in opposite directions, and a handle (601) is fixedly connected to one side of the bidirectional screw rod (6).

5. A bidding device according to claim 4, characterized in that: A slider (501) is fixedly connected to the bottom of the movable frame (5), the outer surface of the slider (501) is adapted to the inner surface of the slide groove (4), and the outer surface of the slider (501) is slidably connected to the inner surface of the slide groove (4).

6. A bidding device according to claim 5, characterized in that: A threaded hole (502) is provided on one side of each slider (501), the inner surface of the threaded hole (502) is adapted to the outer surface of the bidirectional screw rod (6), and the two threaded holes (502) are respectively threadedly connected to the outer surfaces on both sides of the bidirectional screw rod (6).

7. A bidding device according to claim 6, characterized in that: Both sides of each of the mobile frames (5) are fixedly connected with a first hinge shaft (503), and one side of each of the bidding display boards (7) is provided with a first shaft hole (701), and the inner surface of the first shaft hole (701) is hinged to the outer surface of the first hinge shaft (503).

8. A bidding device according to claim 7, characterized in that: One side of two of the bidding display boards (7) is fixedly connected to a second hinge shaft (702), and one side of the other two bidding display boards (7) is provided with a second shaft hole, the inner surface of the second shaft hole is hinged to the outer surface of the second hinge shaft (702).

9. A bidding device according to claim 8, characterized in that: The fixing device (8) comprises two limiting shafts (801), one side of each limiting shaft (801) is fixedly connected to a limiting block, the limiting shaft (801) is fixedly connected to one side of the bidding display board (7), the outer surfaces of the two limiting shafts (801) are slidably connected to a pressure plate (802), the outer surface of each limiting shaft (801) is sleeved with a spring (803), and the spring (803) is arranged between the pressure plate (802) and the limiting block.

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