Engineering cost accounting device

Abstract

The utility model discloses a project cost accounting device which comprises an upper shell, the bottom of the upper shell is movably connected with a lower shell, the inner walls of the two ends of the upper shell are respectively connected with two connecting rods in a rotating mode, the other ends of the connecting rods are both connected with the lower shell in a rotating mode, one side of the upper shell is connected with a display screen in a rotating mode, and the other side of the upper shell is connected with a display screen in a rotating mode. According to the utility model, the connecting rod mechanism and the locking mechanism are arranged, a traditional accounting device usually needs to be disassembled by using a tool when being damaged or needing to be maintained, the design of the accounting device enables the maintenance process to be simpler and more convenient, the upper shell and the lower shell can be separated only by adjusting the locking mechanism and pulling the pull ring, and the maintenance is more convenient. Maintenance personnel can conveniently carry out maintenance operation on the interior, parts are prevented from falling into a drawing in the cost accounting process, the time for rummaging the parts is shortened, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering cost, in particular to an engineering cost calculator. Background Art

[0002] In daily life and work, calculators have been widely used as basic office tools. The existing engineering cost calculators usually have a horizontal display screen and a simple rectangular shell. When using, it is often necessary to raise one end of the display screen or hold it with the hand to tilt the display screen upward at a certain angle to clearly see the displayed content. Therefore, the existing calculators are cumbersome to use and inconvenient to operate.

[0003] At the same time, when the existing calculator is used, it is directly operated by the accounting personnel by hand, and when the calculator is used, the back cover and the host need to be installed by disassembly and assembly tools. Therefore, when the calculator is not carefully carried during hand-held operation and is dropped to the ground, and when the internal parts of the calculator are dropped and damaged, it is necessary to use external tools for disassembly and assembly, which is not convenient for quick disassembly and assembly of the calculator for maintenance.

[0004] In the prior art, a Chinese patent with application number 202321240100.2 discloses "a budget verification calculator". By designing a connecting mechanism, the card plate can be snapped into the inside of the card hole and the back cover can be snapped into the inside of the installation groove, which is convenient for snapping and installing the back cover. After the snapping and installation, after the fingerprint plate is released, the elastic block is deformed to slide the moving block inside the slide groove, and when the moving block slides, the end of the card plate is snapped into the edge of the card hole, which is convenient for quickly reinforcing the connection after the back cover is snapped and installed. However, the back cover still needs to be separated from the host during the disassembly and assembly process. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a construction cost accounting device. By setting a connecting rod mechanism and a locking mechanism, the upper shell and the lower shell can be separated by simply adjusting the locking mechanism and pulling the pull ring, which is convenient for maintenance personnel to perform maintenance operations on the inside.

[0006] The technical solution of the utility model is as follows:

[0007] A construction cost calculator comprises an upper shell, wherein the bottom of the upper shell is movably connected to a lower shell, the inner walls at both ends of the upper shell are rotatably connected to two connecting rods, the other ends of the connecting rods are rotatably connected to the lower shell, and one side of the upper shell is rotatably connected to a display screen.

[0008] Furthermore, a gear is fixedly provided at one end of the connecting rod connected to the upper shell, and racks meshing with the gear on the same side are slidably connected to both sides of the upper shell.

[0009] Furthermore, a pull rod is fixedly provided at one end of the rack close to the display screen, the pull rod passes through the upper shell and is slidably connected to the side wall of the upper shell, and a locking mechanism is provided on the pull rod.

[0010] Furthermore, the locking mechanism includes a fixed block fixedly arranged at one end of the upper shell body, the fixed block is penetrated by a threaded rod, a movable block is fixedly connected to the inner side of the threaded rod, and a spherical surface is respectively provided on the side opposite to the movable block, and the spherical surfaces on both sides are fitted with the circumferential surface of the pull rod to clamp the pull rod.

[0011] Furthermore, a plurality of limiting rods are fixedly provided at one end of the movable block close to the fixed block, a plurality of limiting holes are opened at one end of the fixed block close to the movable block, and the free ends of the limiting rods are slidably connected to the limiting holes.

[0012] Furthermore, the outer threaded end of the threaded rod passes through the upper shell and is threadedly connected with a rotating handle.

[0013] Furthermore, a pull ring is rotatably connected to a side of the pull rod away from the rack.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model is provided with a connecting rod mechanism and a locking mechanism. Traditional cost accounting devices usually need to be disassembled with tools when they are damaged or need maintenance, while the design of this cost accounting device makes the maintenance process simpler. Only the locking mechanism needs to be adjusted and the pull ring needs to be pulled to separate the upper shell and the lower shell, which is convenient for maintenance personnel to perform maintenance operations on the inside. At the same time, during the separation process, the parts in the lower shell remain in place and do not need to be overturned or disassembled, which prevents parts from falling into the drawings during the cost accounting process, reduces the time for searching for parts, and improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0018] Figure 3 This is the internal structure diagram of the utility model;

[0019] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the locking mechanism structure of the utility model;

[0021] Figure 6 This is a main sectional view of the locking mechanism of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Upper shell; 2. Lower shell; 3. Connecting rod; 4. Display screen; 5. Gear; 6. Rack; 7. Pull rod; 8. Fixed block; 9. Threaded rod; 10. Movable block; 11. Limit rod; 12. Limit hole; 13. Rotating handle; 14. Spherical surface; 15. Pull ring. DETAILED DESCRIPTION

[0024] In order to make the contents of the present invention easier to understand, the technical solution of the present invention is further described below in conjunction with specific implementation methods and drawings, but the present invention is not limited thereto.

[0025] See also Figures 1 to 3 The utility model provides a technical solution: an engineering cost accounting device, including an upper shell 1, a lower shell 2 is movably connected to the bottom of the upper shell 1, two connecting rods 3 are rotatably connected to the inner walls at both ends of the upper shell 1, and one end of the connecting rod 3 connected to the upper shell 1 is fixedly provided with a gear 5, and racks 6 meshing with the gear 5 on the same side are slidably connected to the two sides of the upper shell 1, and the other ends of the connecting rods 3 are rotatably connected to the side walls of the lower shell 2. By moving the racks 6 on both sides, the gears 5 meshing with the racks 6 are rotated, driving the connecting rods 3 to rotate around their respective corresponding gears 5, thereby driving the lower shell 2 to separate from the upper shell 1.

[0026] From the above description, it can be seen that when the lower shell 2 is separated from the upper shell 1, unlike the previous calculator that needs to use disassembly and assembly tools to install the back cover and the main unit, when the lower shell 2 is separated from the upper shell 1 by the connecting rod 3, the parts in the lower shell 2 can remain in place during the disassembly and assembly process and do not need to be overturned. At the same time, the disassembly and assembly of the calculator can be completed without additional disassembly and assembly tools, and there is no need to worry about the loss of small parts in the calculator, which can prevent parts from falling into the drawings during the cost calculation process, reducing the time of searching for parts and improving maintenance efficiency.

[0027] As a further preference of this embodiment, a pull rod 7 is fixedly provided at one end of the rack 6 close to the display screen 4. The pull rod 7 passes through the upper shell 1 and is slidably connected to the side wall of the upper shell 1. The rack 6 can be driven to move by pulling the pull rod 7 on one side of the upper shell 1.

[0028] Combination Figure 5 and Figure 6A locking mechanism is provided on the pull rod 7, and the locking mechanism includes a fixed block 8 fixedly arranged at one end of the upper shell body 1, and the fixed block 8 is penetrated by a threaded rod 9, and a movable block 10 is fixedly connected to the inner side of the threaded rod 9, and a spherical surface 14 is respectively provided on the side opposite to the movable block 10 of the fixed block 8, and the spherical surfaces 14 on both sides are in contact with the circumferential surface of the pull rod 7 to clamp the pull rod 7, and a plurality of limiting rods 11 are fixedly provided on one end of the movable block 10 close to the fixed block 8, and a plurality of limiting holes 12 are provided on one end of the fixed block 8 close to the movable block 10, and the free end of the limiting rod 11 is slidably connected to the limiting hole 12, and the outer threaded end of the threaded rod 9 passes through the upper shell body 1 and is threadedly connected to a rotating handle 13.

[0029] From the above description, it can be seen that by rotating the rotating handle 13, the threaded rod 9 can be driven to move outward, and under the limiting action of the limiting rod 11 and the limiting hole 12, the movable block 10 is translated toward the fixed block 8, thereby reducing the distance between the spherical surfaces 14 on both sides to clamp and fix the pull rod 7; similarly, rotating the rotating handle 13 in the opposite direction can drive the threaded rod 9 to move inward, and under the limiting action of the limiting rod 11 and the limiting hole 12, the movable block 10 is gradually moved away from the fixed block 8, thereby increasing the distance between the spherical surfaces 14 on both sides, loosening the pull rod 7, and facilitating the movement of the pull rod 7.

[0030] Combination Figure 4 A pull ring 15 is rotatably connected to one side of the pull rod 7 away from the rack 6 , and the pull ring 15 can be easily moved to facilitate the movement of the pull rod 7 .

[0031] As a further preference of this embodiment, one side of the upper shell 1 is rotatably connected to a display screen 4 via a rotating shaft. By manually bending the display screen 4, the display screen 4 can be adjusted to a position convenient for viewing. At the same time, the display screen 4 can be fixed by friction to prevent it from being affected by the light angle during use.

[0032] As a further preference of this embodiment, in order to facilitate the use of the calculator, a suction cup can be fixedly provided on the back of the lower shell 2. Combined with the rotation function of the display screen 4, the calculator can be fixed at any position that can be fixed by the suction cup, which is convenient for use in the cost calculation process.

[0033] Working principle of the utility model

[0034] When the calculator is damaged during use and needs to be repaired, the display screen 4 is manually bent to a state where it is perpendicular to the upper shell 1. At this time, the display screen 4 is released. The display screen 4 can remain perpendicular to the upper shell 1 under the action of friction. At the same time, the locking mechanism is adjusted and the rotating handle 13 is rotated to drive the threaded rod 9 to move inward. Under the limiting action of the limiting rod 11 and the limiting hole 12, the movable block 10 gradually moves away from the fixed block 8, thereby increasing the distance between the spherical surfaces 14 on both sides and loosening the pull rod 7. At this time, the pull ring 15 located below the display screen 4 can be seen. By pulling the pull ring 15 outward, the pull rod 7 moves outward. Thereby, the gear 5 meshing with the rack 6 is driven to rotate, so that the lower shell 2 is moved away from the upper shell 1 under the action of the connecting rod 3, exposing the internal parts of the calculator, thereby facilitating maintenance. When the maintenance is completed, the pull ring 15 is pushed inward to make the lower shell 2 translate back to its original position, and the locking structure is adjusted. By rotating the rotating handle 13, the threaded rod 9 is driven to move outward. Under the limiting action of the limiting rod 11 and the limiting hole 12, the movable block 10 is translated toward the fixed block 8, thereby reducing the distance between the spherical surfaces 14 on both sides, so as to clamp and fix the pull rod 7, ensure the sealing between the upper shell 1 and the lower shell 2, and prevent the upper shell 1 and the lower shell 2 from separating during use.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A construction cost calculator, characterized in that: The device comprises an upper shell (1), the bottom of which is movably connected to a lower shell (2), the inner walls at both ends of the upper shell (1) are rotatably connected to two connecting rods (3), the other ends of the connecting rods (3) are rotatably connected to the lower shell (2), and one side of the upper shell (1) is rotatably connected to a display screen (4).

2. The engineering cost calculator according to claim 1, characterized in that: A gear (5) is fixedly provided at one end of the connecting rod (3) connected to the upper shell (1), and racks (6) meshing with the gear (5) on the same side are slidably connected to both sides of the upper shell (1).

3. A construction cost calculator according to claim 2, characterized in that: A pull rod (7) is fixedly provided at one end of the rack (6) close to the display screen (4); the pull rod (7) passes through the upper shell (1) and is slidably connected to the side wall of the upper shell (1); and a locking mechanism is provided on the pull rod (7).

4. A construction cost calculator according to claim 3, characterized in that: The locking mechanism comprises a fixed block (8) fixedly arranged at one end of the upper shell (1), the fixed block (8) being provided with a threaded rod (9), the inner side of the threaded rod (9) being fixedly connected with a movable block (10), and the fixed block (8) and the movable block (10) are respectively provided with spherical surfaces (14) on the sides opposite to each other, and the spherical surfaces (14) on both sides are in contact with the circumferential surfaces of the pull rod (7) to clamp the pull rod (7).

5. A construction cost calculator according to claim 4, characterized in that: A plurality of limiting rods (11) are fixedly arranged at one end of the movable block (10) close to the fixed block (8); a plurality of limiting holes (12) are opened at one end of the fixed block (8) close to the movable block (10); and the free ends of the limiting rods (11) are slidably connected to the limiting holes (12).

6. The engineering cost calculator according to claim 4, characterized in that: The outer threaded end of the threaded rod (9) passes through the upper shell (1) and is threadedly connected to a rotating handle (13).

7. The engineering cost calculator according to claim 3 is characterized in that: A pull ring (15) is rotatably connected to the side of the pull rod (7) away from the rack (6).

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