A display device for cost management of construction projects

Abstract

This invention belongs to the field of construction project cost management display technology, specifically a construction project cost management display device. It includes a main board with a display screen embedded in its center. Two sets of display panels are symmetrically mounted on the main board, and two sets of suspension shafts are symmetrically connected to the display panels. Rollers are spun onto the suspension shafts. A limiting frame is provided at the upper end of the main board, which limits the rollers, and the rollers rotate around the limiting frame. Pulling the two sets of display panels in opposite directions separates them, thereby opening the display screen. Because the display screen is embedded in the center of the main board, the risk of the display screen being bumped is reduced. Furthermore, during the pulling process, the display panels drive the suspension shafts and rollers to move together, and the rollers rotate along the limiting frame. The cooperation between the rollers and the limiting frame guides the movement of the display panels. The rotation of the rollers not only makes the movement of the display panels smoother but also reduces wear caused by the movement, thus increasing the service life of the device.

Description

Technical Field

[0001] This invention belongs to the field of construction project cost management display technology, specifically a construction project cost management display device. Background Technology

[0002] Construction engineering encompasses the planning, surveying, design, construction, and completion of new buildings, renovations, or expansions of buildings and ancillary structures and facilities, as well as the installation of associated lines, pipelines, and equipment. Construction projects utilize numerous materials with fluctuating costs, necessitating data analysis and comparison of project costs. Due to the large volume of data, it is typically displayed on a visual aid to facilitate comparison and provide staff with a clear overview.

[0003] Publication No. CN213691361U discloses a display device for construction project cost management, including a support base with a rotating groove on its upper surface, a rotating shaft fixedly mounted at the center of the rotating groove, a rotating plate fixedly connected to the rotating shaft, an installation groove on the upper surface of the rotating plate, a display plate rotatably connected to one side of the installation groove via a rotating shaft, a groove on the other side of the installation groove, a support rod rotatably connected to the side of the groove away from the display plate via a rotating shaft, a telescopic rod movably connected to one end of the support rod, a slot on the back of the display plate, the telescopic rod engaging with the slot, a placement groove at the bottom of the support base, a support column rotatably connected to one side of the placement groove via a rotating shaft, and a flexible retaining ring fixedly connected to the other side of the placement groove; by placing the display plate in the installation groove and the support column in the placement groove, and the flexible retaining ring securing the support column, the display device can be folded and stored for easy carrying and movement.

[0004] In the above-mentioned solution, when data is displayed on the display device, the data table is fixed to the display board by magnetic adhesion. For data analysis, it is necessary to pull out the sub-board with the embedded display screen from the display board. After the display screen is pulled out, the sub-board plus the display screen is relatively heavy, and most of the sub-board and the display screen are suspended outside. The display board has limited support surface for the sub-board, resulting in excessive load at the joint between the sub-board and the display board, increasing wear at the joint and affecting the service life of the sub-board and the display board. Secondly, after being pulled out, the display screen is suspended on one side of the display board, and the risk of the display screen being bumped when people pass by the display device is high. Therefore, the present invention provides a display device for construction project cost management. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a construction project cost management display device, including a main board, a display screen is embedded in the middle of the main board, two sets of display boards are symmetrically mounted on the main board, two sets of suspension shafts are symmetrically connected to the display boards, the suspension shafts are spun to rollers, and a limiting frame is set at the upper end of the main board. The limiting frame is used to limit the rollers, and the rollers are rotatably connected to the limiting frame.

[0007] Pulling the two display panels in opposite directions separates them, thus opening the display screen. Since the display screen is embedded in the middle of the main board, the risk of the display screen being bumped is reduced. Secondly, during the pulling process, the display panels drive the suspension shaft and rollers to move together, and the rollers rotate along the limit frame. The cooperation between the rollers and the limit frame guides the movement of the display panels. Due to the rotation of the rollers, the movement of the display panels is not only smoother, but also the wear caused by the movement of the display panels is reduced, thus improving the service life of the device.

[0008] Preferably, the suspension shaft includes: a shaft body, a roller screwed onto the shaft body, a spring disposed within the shaft body, a clamp fixedly connected to one end of the spring, four sets of limiting grooves opened on the limiting frame, the clamp engaging with the limiting grooves, a pressure plate fixedly connected to the other end of the spring, a V-shaped steel plate fixedly connected to the pressure plate, a receiving column engaging with the V-shaped steel plate, and a fixing plate fixedly connected to the receiving column, the fixing plate fixedly connected to the display plate, a rectangular slide groove opened on the shaft body, the receiving column slidably connecting to the rectangular slide groove, two sets of guide holes symmetrically opened on the shaft body, the guide holes movably inserting into the guide columns, and one end of the guide column fixedly connected to the V-shaped steel plate;

[0009] The springs inside the two sets of suspension shafts on the display board are in a compressed state. The spring's rebound force acts on the clamp, which squeezes the inner wall of the limiting frame to generate friction, thereby reducing the movement speed of the shaft and thus reducing the impact force of the roller on the limiting frame. By compressing the spring, the force that causes the display board, fixed plate, and supporting column to move quickly is buffered, greatly reducing the force that the supporting column ultimately transmits to the shaft, thereby reducing the force of the roller hitting the limiting frame and preventing the roller and suspension shaft from being damaged.

[0010] Preferably, two rows of rollers are symmetrically screwed onto the shaft, a fixed plate is located on the rollers, and the rollers are rotatably connected to the fixed plate;

[0011] The fixed plate slides along the two rows of rollers, causing the rollers to rotate. The rotation of the rollers prevents the fixed plate from rubbing against the shaft.

[0012] Preferably, a support base is provided below the motherboard to house the motherboard. The support base includes: a support sleeve, a motherboard movably inserted into the support sleeve, a turntable screwed onto the support sleeve, a shaft screwed onto the turntable, a boss on the back side of the motherboard, the shaft abutting against the boss, a worm gear fixedly mounted on the turntable, a worm engaging the worm gear, four sets of support feet symmetrically mounted on the lower end of the support sleeve, and a pulley fixedly mounted on one end of the support feet. The worm is screwed onto the back side of the support sleeve, and the drive shaft rotates to lift the motherboard.

[0013] As the shaft rotates downwards, the boss loses its support and, under the influence of gravity, the motherboard moves downwards and slides into the support sleeve. This not only allows for the storage of the motherboard and the display screen but also reduces the overall height of the device, making it easier to store.

[0014] Preferably, the support sleeve includes: a housing, a main board inserted into the housing, two sets of toothed plates symmetrically and movably installed in the bottom of the housing, two sets of gears symmetrically meshing with the toothed plates, gears fixedly connected to the other end of the support foot, the other end of the support foot screwed to the bottom of the housing, a receiving plate fixedly connected to the toothed plates, a movable plate movably inserted into the receiving plate, and a shaft two screwed onto the movable plate. A guide groove is opened on the turntable, and the shaft two is slidably connected to the guide groove. The guide groove is composed of an annular groove and an oblique arc groove. Two sets of oblique grooves are symmetrically opened on the movable plate, and a shaft three is provided on the receiving plate. The shaft three is slidably connected to the oblique groove.

[0015] The moving gear plate drives the gears and support legs to rotate together, causing the four sets of support legs to be folded under the bottom of the housing. This not only reduces the area occupied by the device in the storage room, but also prevents workers from kicking the support legs.

[0016] Preferably, the support sleeve further includes: a guide rail, which is fixedly installed inside the bottom of the housing, and a guide groove is opened on the lower end face of the toothed plate, and the guide rail is slidably connected to the guide groove;

[0017] The guide groove on the lower end face of the toothed plate slides along the guide rail. The cooperation between the guide groove and the guide rail guides the movement of the toothed plate.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. Pull the two display panels in opposite directions to separate them, thereby opening the display screen. Since the display screen is embedded in the middle of the main board, the risk of the display screen being bumped is reduced. Secondly, during the pulling process, the display panel drives the suspension shaft and rollers to move together, and the rollers rotate along the limit frame. The cooperation between the rollers and the limit frame guides the movement of the display panel. Due to the rotation of the rollers, the movement of the display panel is not only smoother, but also reduces the wear caused by the movement of the display panel, thus improving the service life of the device.

[0020] 2. When the display panel is pulled, it moves the fixing plate, supporting column, V-shaped steel plate, shaft, etc. together. The shaft drives the rollers to rotate along the limiting frame. During this process, the springs in the two sets of suspension shafts on the display panel are in a compressed state. The rebound force of the springs acts on the clamp, which will squeeze the inner wall of the limiting frame to generate friction, thereby reducing the moving speed of the shaft and reducing the impact force of the rollers on the limiting frame until the display screen is fully opened. At this time, one set of rollers is blocked by the limiting frame and cannot move. Under the action of the spring rebound force, the clamp slides into the limiting groove. The cooperation between the clamp and the limiting groove limits the position of the display panel.

[0021] 3. When the force applied to the display panel in one direction is too great, and the friction between the clamp and the inner wall of the limiting frame fails to effectively reduce the movement speed of the shaft, a set of rollers will be blocked by the limiting frame and unable to move. The clamp will engage with the limiting groove. At this time, the display panel will drive the fixed plate and the supporting column to continue moving. The supporting column will slide along the rectangular slide and squeeze the V-shaped steel plate, causing the V-shaped steel plate to push the guide column to slide along the guide hole and compress the spring. Therefore, by compressing the spring, the force that causes the display panel, fixed plate, and supporting column to move rapidly is buffered, and the force that the supporting column ultimately transmits to the shaft is greatly reduced, thereby reducing the force of the rollers hitting the limiting frame and preventing the rollers and suspension shaft from being damaged.

[0022] 4. Rotate the worm gear. As the worm gear rotates, the worm wheel, along with the turntable and shaft one, rotate together. Since shaft one rotates downward, the boss loses the support of shaft one. Under the action of gravity, the main board moves downward and slides into the interior of the support sleeve. This not only realizes the storage of the main board and the display screen, but also reduces the height of the entire device, thus making it easier to store the device.

[0023] 5. Continue rotating the worm gear. At this time, the main board remains stationary inside the casing, and the turntable drives shaft one to disengage from the boss. During this process, shaft two slides along the annular groove. When shaft one disengages from the boss, shaft two will slide along the inclined arc groove. Guided by the inclined arc groove, shaft two drives the movable plate to move downward. As the movable plate moves downward, shaft three slides along the inclined slide groove, and the groove wall of the inclined slide groove squeezes shaft three, causing shaft three to drive the receiving plate and the toothed plate to move together. The moving toothed plate drives the gear and the support feet to rotate together, so that the four sets of support feet are folded under the bottom of the casing. This not only reduces the area occupied by the device in the storage room, but also prevents workers from kicking the support feet. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the combination of the motherboard, display screen, display board, suspension shaft, and rollers of the present invention.

[0027] Figure 3 This is a cross-sectional schematic diagram of the suspension shaft and roller assembly of the present invention.

[0028] Figure 4 This is a schematic diagram of the combination of the suspension shaft and the limiting frame of the present invention.

[0029] Figure 5 This is a schematic diagram of a partial assembly of the suspension shaft of the present invention.

[0030] Figure 6 This is a schematic diagram of the assembly of the motherboard and the support base of the present invention.

[0031] Figure 7 This is a schematic diagram of the combination of the support sleeve and the turntable of the present invention.

[0032] Figure 8 This is a cross-sectional view of the support sleeve, support foot, and pulley assembly of the present invention.

[0033] In the diagram: 1. Main board; 101. Limiting bracket; 102. Limiting groove; 103. Boss; 2. Display screen; 3. Display board; 4. Suspension shaft; 5. Roller; 6. Support base; 401. Shaft; 402. Spring; 403. Clip; 404. Pressure plate; 405. V-shaped steel plate; 406. Support column; 407. Fixing plate; 4011. Guide hole; 4012. Guide column; 4013. Rectangular slide; 4014. Roller; 601. Support Support sleeve; 602, turntable; 6021, guide groove; 211, annular groove; 212, oblique arc groove; 603, shaft one; 604, worm gear; 605, worm; 606, support foot; 607, pulley; 6011, housing; 6012, gear plate; 52, guide groove; 6013, gear; 6014, receiving plate; 51, shaft three; 6015, movable plate; 61, oblique groove; 6016, shaft two; 6017, guide rail. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown in the figure, a construction project cost management display device according to an embodiment of the present invention includes a main board 1, a display screen 2 embedded in the middle of the main board 1, two sets of display boards 3 symmetrically on the main board 1, two sets of suspension shafts 4 symmetrically connected to the display boards 3, rollers 5 swivelly connected to the suspension shafts 4, and a limiting frame 101 set at the upper end of the main board 1. The limiting frame 101 is used to limit the rollers 5, and the rollers 5 are rotatably connected to the limiting frame 101.

[0037] Specifically, the display panel 3 is equipped with magnetic blocks. In the initial state, the two sets of display panels 3 are combined, and the combined sets of display panels 3 block the display screen 2. When it is necessary to display and analyze the data table, the data table is fixed to the display panel 3 by magnetic adhesive. Then, the two sets of display panels 3 are pulled in opposite directions to separate them, thereby opening the display screen 2. Since the display screen 2 is embedded in the middle of the main board 1, the risk of the display screen 2 being bumped is reduced. Secondly, during the pulling process, the display panel 3 drives the suspension shaft 4 and the roller 5 to move together, and the roller 5 rotates along the limit frame 101. The cooperation between the roller 5 and the limit frame 101 guides the movement of the display panel 3. Due to the rotation of the roller 5, the movement of the display panel 3 is not only smoother, but also the wear caused by the movement of the display panel 3 is reduced, thus improving the service life of the device.

[0038] like Figures 2 to 5 As shown, the suspension shaft 4 includes: a shaft body 401, a roller 5 screwed onto the shaft body 401, a spring 402 disposed inside the shaft body 401, a clamp 403 fixedly connected to one end of the spring 402, four sets of limiting grooves 102 opened on the limiting frame 101, the clamp 403 engaging the limiting grooves 102, a pressure plate 404 fixedly connected to the other end of the spring 402, a V-shaped steel plate 405 fixedly connected to the pressure plate 404, a support column 406 engaging the V-shaped steel plate 405, and a fixing plate 407 fixedly connected to the support column 406, the fixing plate 407 fixedly connected to the display plate 3, a rectangular slide groove 4013 opened on the shaft body 401, the support column 406 slidably connected to the rectangular slide groove 4013, two sets of guide holes 4011 symmetrically opened on the shaft body 401, the guide holes 4011 movably inserting into the guide column 4012, and one end of the guide column 4012 fixedly connected to the V-shaped steel plate 405.

[0039] Specifically, when the two sets of display panels 3 are pulled apart, the rollers 5 can rotate, allowing the display panels 3 to move very smoothly. Therefore, if a display panel 3 is pushed in one direction, it can easily move quickly. Since the rotation of the rollers 5 within the limiting frame 101 cannot be observed, the display panel 3 will only stop being pushed when the rollers 5 are blocked by the limiting frame 101. Therefore, before the display panel 3 stops, the rollers 5 will hit the limiting frame 101. Repeated impacts will increase the wear between the rollers 5 and the suspension shaft 4, reducing the service life of the rollers 5 and the suspension shaft 4. Therefore, when the display panel 3 is pulled apart, the display panel 3 drives the fixed plate 407, the supporting column 406, and the V-shaped steel plate 405. The shaft 401 and other components move together, and the shaft 401 drives the roller 5 to rotate along the limiting frame 101. During this process, the springs 402 in the two sets of suspension shafts 4 on the display panel 3 are in a compressed state. The rebound force of the springs 402 acts on the clamp 403, and the clamp 403 will squeeze the inner wall of the limiting frame 101 to generate friction, thereby reducing the moving speed of the shaft 401 and reducing the impact force of the roller 5 on the limiting frame 101 until the display screen 2 is fully opened. At this time, one set of rollers 5 is blocked by the limiting frame 101 and cannot move. Under the rebound force of the spring 402, the clamp 403 slides into the limiting groove 102. The cooperation between the clamp 403 and the limiting groove 102 limits the position of the display panel 3.

[0040] Furthermore, when the force applied to the display panel 3 in one direction is excessive, and the friction between the clamp 403 and the inner wall of the limiting frame 101 fails to effectively reduce the moving speed of the shaft 401, a set of rollers 5 are blocked by the limiting frame 101 and cannot move. The clamp 403 engages with the limiting groove 102. At this time, the display panel 3 drives the fixing plate 407 and the supporting column 406 to continue moving. The supporting column 406 will slide along the rectangular slide groove 4013 and squeeze the V-shaped steel plate 405, causing the V-shaped steel plate 405 to push the guide column 4012 to slide along the guide hole 4011 and compress the spring 402. Therefore, by compressing the spring 402, the force that causes the display panel 3, the fixing plate 407, and the supporting column 406 to move quickly is buffered, and the force that the supporting column 406 ultimately transmits to the shaft 401 is greatly reduced, thereby reducing the force of the rollers 5 hitting the limiting frame 101 and preventing the rollers 5 and the suspension shaft 4 from being damaged.

[0041] Furthermore, two rows of rollers 4014 are symmetrically screwed onto the shaft 401, and the fixing plate 407 is located on the rollers 4014, and the rollers 4014 are rotatably connected to the fixing plate 407.

[0042] Specifically, when the display plate 3 drives the fixed plate 407 and the supporting column 406 to continue moving, the fixed plate 407 slides along the two rows of rollers 4014, causing the rollers 4014 to rotate. The rotation of the rollers 4014 prevents the fixed plate 407 from rubbing against the shaft 401.

[0043] like Figure 6As shown, a support base 6 is provided below the motherboard 1. The support base 6 is used to house the motherboard 1. The support base 6 includes: a support sleeve 601, the motherboard 1 is movably inserted into the support sleeve 601, a turntable 602 screwed onto the support sleeve 601, a shaft 603 screwed onto the turntable 602, a boss 103 provided on the back side of the motherboard 1, the shaft 603 is used to abut against the boss 103, a worm gear 604 fixedly installed on the turntable 602, a worm 605 meshing with the worm gear 604, four sets of support feet 606 symmetrically installed at the lower end of the support sleeve 601, and a pulley 607 fixedly installed at one end of the support foot 606. The worm 605 is screwed onto the back side of the support sleeve 601, and the shaft 603 is driven to rotate to lift the motherboard 1.

[0044] Specifically, after the device was used, it needed to be moved and stored. Due to its height, the device was unstable during movement and occupied a large amount of air, making it difficult to store. Therefore, before storing the device, the worm gear 605 was rotated. As the worm gear 605 rotated, the worm wheel 604, along with the turntable 602 and shaft 603, rotated together. As shaft 603 rotated downwards, the boss 103 lost the support of shaft 603. Under the action of gravity, the main board 1 moved downwards and slid into the support sleeve 601. This not only allowed the main board 1 and the display screen 2 to be stored, but also reduced the height of the entire device, making it easier to store.

[0045] like Figure 7 and Figure 8 As shown, the support sleeve 601 includes: a housing 6011, which is inserted into the main board 1; two sets of toothed plates 6012 symmetrically and movably installed inside the bottom of the housing 6011; two sets of gears 6013 symmetrically meshing with the toothed plates 6012; the gears 6013 are fixedly connected to the other end of the support foot 606; the other end of the support foot 606 is screwed to the bottom of the housing 6011; and a receiving plate 6014 is fixedly connected to the toothed plates 6012 and movably inserted into the receiving plate 601. The movable plate 6015 on the 4, and the second shaft 6016 screwed onto the movable plate 6015, the turntable 602 has a guide groove 6021, the second shaft 6016 is slidably connected to the guide groove 6021, the guide groove 6021 is composed of an annular groove 211 and an oblique arc groove 212, the movable plate 6015 has two sets of oblique grooves 61 symmetrically opened, the receiving plate 6014 is provided with a third shaft 51, the third shaft 51 is slidably connected to the oblique groove 61.

[0046] Specifically, after the mainboard 1 is housed inside the support sleeve 601, the operator needs to push the device into the storage chamber. Since the four sets of support feet 606 at the bottom of the support sleeve 601 are in an extended state, this not only increases the area occupied by the device in the storage chamber, but also makes it easy for the operator to kick the support feet 606 when entering the storage chamber. Therefore, after the device is pushed into the storage chamber, the worm gear 605 continues to rotate. At this time, the mainboard 1 remains stationary inside the housing 6011, and the turntable 602 drives shaft one 603 to disengage from the boss 103. During this process, shaft two 6016 slides along the annular groove 211. When shaft one 603 disengages from the boss 103, shaft two 601... 6 will slide along the inclined arc groove 212. Guided by the inclined arc groove 212, the second shaft 6016 will drive the movable plate 6015 to move downward. As the movable plate 6015 moves downward, the third shaft 51 will slide along the inclined slide groove 61. The groove wall of the inclined slide groove 61 will press the third shaft 51, causing the third shaft 51 to drive the receiving plate 6014 and the toothed plate 6012 to move together. The moving toothed plate 6012 will drive the gear 6013 to rotate together with the support feet 606, so that the four sets of support feet 606 are folded under the bottom of the shell 6011. This not only reduces the area occupied by the device in the storage room, but also prevents the staff from kicking the support feet 606.

[0047] Example 2

[0048] like Figure 8 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the support sleeve 601 further includes a guide rail 6017, the guide rail 6017 is fixedly installed inside the bottom of the shell 6011, and a guide groove 52 is opened on the lower end face of the toothed plate 6012, and the guide rail 6017 is slidably connected to the guide groove 52.

[0049] Specifically, when the aforementioned shaft 51 moves the receiving plate 6014 and the toothed plate 6012 together, the guide groove 52 on the lower end face of the toothed plate 6012 slides along the guide rail 6017. The cooperation between the guide groove 52 and the guide rail 6017 guides the movement of the toothed plate 6012.

[0050] Working principle: The data table is magnetically attached to the display board 3. Then, pulling the two sets of display boards 3 in opposite directions separates them, opening the display screen 2. When the display boards 3 are pulled, they move the fixing plate 407, the supporting column 406, the V-shaped steel plate 405, and the shaft 401 together. The shaft 401 drives the roller 5 to rotate along the limiting frame 101. During this process, the springs 402 inside the two sets of suspension shafts 4 on the display board 3 are compressed. The rebound force of the springs 402 acts on the clamp 403, which squeezes the inner wall of the limiting frame 101, generating friction and reducing the moving speed of the shaft 401. Until the display screen 2 is fully opened, a set of rollers 5 are blocked by the limit bracket 101 and cannot move. Under the rebound force of the spring 402, the clamp 403 slides into the limit groove 102. When the clamp 403 rubs against the inner wall of the limit bracket 101 and cannot effectively reduce the moving speed of the shaft 401, the display plate 3 drives the fixing plate 407 and the supporting column 406 to continue moving. The supporting column 406 will slide along the rectangular slide groove 4013 and squeeze the V-shaped steel plate 405, causing the V-shaped steel plate 405 to push the guide column 4012 to slide along the guide hole 4011 and compress the spring 402. Therefore, by compressing the spring 402, the movement is slowed down. The force that causes the display panel 3, fixed plate 407, and supporting column 406 to move rapidly necessitates the rotation of the worm gear 605 before storing the device. As the worm gear 605 rotates, the worm wheel 604, along with the turntable 602 and shaft 603, rotates together. Because shaft 603 rotates downwards, the boss 103 loses its support and, under gravity, the main plate 1 moves downwards and slides into the support sleeve 601, pushing the device into the storage chamber. The worm gear 605 continues to rotate; at this point, the main plate 1 remains stationary within the housing 6011, and the turntable 602 causes shaft 603 to disengage from the boss 103. During this process, shaft 6016... As shaft 1 603 slides along the annular groove 211, shaft 2 6016 slides along the inclined arc groove 212 when it disengages from the boss 103. Guided by the inclined arc groove 212, shaft 2 6016 drives the movable plate 6015 to move downward. As the movable plate 6015 moves downward, shaft 3 51 slides along the inclined slide groove 61, and the groove wall of the inclined slide groove 61 presses shaft 3 51, causing shaft 3 51 to drive the receiving plate 6014 and the toothed plate 6012 to move together. The moving toothed plate 6012 drives the gear 6013 to rotate together with the support feet 606, so that the four sets of support feet 606 are folded under the bottom of the shell 6011.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction project cost management display device, comprising a main board (1), characterized in that: The motherboard (1) has a display screen (2) embedded in the middle. There are two sets of display boards (3) symmetrically connected on the motherboard (1). Two sets of suspension shafts (4) are symmetrically connected on the display boards (3). The suspension shafts (4) are connected to rollers (5). The upper end of the main board (1) is provided with a limiting frame (101), the limiting frame (101) is used to limit the roller (5), and the roller (5) is rotatably connected to the limiting frame (101). The suspension shaft (4) includes: A shaft (401) on which the roller (5) is screwed; A spring (402) is provided inside the shaft (401); A clamp (403) is fixedly connected to one end of the spring (402), and four sets of limiting grooves (102) are opened on the limiting frame (101), and the clamp (403) engages with the limiting grooves (102). A pressure plate (404) is fixedly connected to the other end of the spring (402); V-shaped steel plate (405) is fixedly connected to the pressure plate (404); The support column (406) is snapped into the V-shaped steel plate (405). as well as, A fixing plate (407) is fixedly connected to the support column (406), and the fixing plate (407) is fixedly connected to the display panel (3); A rectangular groove (4013) is provided on the shaft (401), and the receiving column (406) is slidably connected to the rectangular groove (4013). Two sets of guide holes (4011) are symmetrically provided on the shaft (401), and the guide holes (4011) are movably inserted into the guide column (4012). One end of the guide column (4012) is fixedly connected to the V-shaped steel plate (405). Two rows of rollers (4014) are symmetrically screwed onto the shaft (401), the fixing plate (407) is located on the rollers (4014), and the rollers (4014) are rotatably connected to the fixing plate (407).

2. The construction project cost management display device according to claim 1, characterized in that: A support base (6) is provided below the motherboard (1), and the support base (6) is used to house the motherboard (1). The support base (6) includes: Support sleeve (601), the main board (1) is movably inserted into the support sleeve (601). A turntable (602) screwed onto the support sleeve (601); A shaft (603) is screwed onto the turntable (602), and a boss (103) is provided on the back side of the main board (1). The shaft (603) is used to abut against the boss (103). A worm gear (604) is fixedly installed on the turntable (602); The worm (605) meshes with the worm wheel (604); Four sets of support feet (606) are symmetrically installed at the lower end of the support sleeve (601). as well as, A pulley (607) is fixedly installed at one end of the support foot (606).

3. The construction project cost management display device according to claim 2, characterized in that: The worm gear (605) is screwed onto the back side of the support sleeve (601), and the drive shaft (603) rotates to lift the main board (1).

4. The construction project cost management display device according to claim 3, characterized in that: The support sleeve (601) includes: A housing (6011) is inserted into the motherboard (1). Two sets of toothed plates (6012) are symmetrically and movablely installed inside the bottom of the housing (6011). Two sets of gears (6013) symmetrically mesh with the toothed plate (6012), the gears (6013) are fixedly connected to the other end of the support foot (606), and the other end of the support foot (606) is screwed to the bottom of the shell (6011); A receiving plate (6014) is fixedly connected to the toothed plate (6012). A movable plate (6015) is movably inserted into the receiving plate (6014); as well as, Shaft 2 (6016) is screwed onto the movable plate (6015), and guide groove (6021) is opened on the turntable (602). Shaft 2 (6016) is slidably connected to guide groove (6021).

5. The construction project cost management display device according to claim 4, characterized in that: The guiding groove (6021) is composed of an annular groove (211) and an oblique arc groove (212).

6. The construction project cost management display device according to claim 5, characterized in that: Two sets of inclined slide grooves (61) are symmetrically opened on the movable plate (6015), and a shaft three (51) is provided on the receiving plate (6014). The shaft three (51) is slidably connected to the inclined slide grooves (61).

7. The construction project cost management display device according to claim 6, characterized in that: The support sleeve (601) also includes: The guide rail (6017) is fixedly installed inside the bottom of the housing (6011). The lower end face of the toothed plate (6012) is provided with a guide groove (52), and the guide rail (6017) is slidably connected to the guide groove (52).

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