A dual-pointer gate opening indicator device

Abstract

The utility model provides a kind of double-pointer gate opening indicating device, it is related to hoist gate opening measurement technical field, including gear box and dial, dial is arranged in gear box side, driven shaft is rotatably assembled on gear box, driven shaft one end is located outside gear box, the other end is located in gear box, the end portion of driven shaft located outside gear box is fixedly assembled with driven sprocket;The end portion of driven shaft located in gear box is assembled with gear I;Rotatably assembled with pivot in gear box, pivot is fixedly assembled with gear II, gear III, gear IV on, gear II engages with gear I;Rotatably assembled with rotating shaft sleeve on gear box;Rotating shaft sleeve is fixedly assembled with gear V, rotating shaft sleeve is fixed with first pointer, gear V engages with gear IV;Rotatably assembled with gear shaft in rotating shaft sleeve, gear shaft is assembled with gear VI on, gear shaft is fixed with second pointer, gear VI engages with gear III, can be applicable to more wide gate lifting height display.

Description

Technical Field

[0001] This utility model relates to the field of gate opening measurement technology, and in particular to a dual-pointer gate opening indicator device. Background Technology

[0002] The gate opening indicator is the component that measures and displays the gate opening degree. Its reliability and accuracy play a crucial role in the gate operation and control. This paper addresses the application requirements of mechanical gate opening indicators and the current situation where existing gate opening indicators are all single-pointer type. For example, Chinese patent document CN210603369U, with authorization announcement date of May 22, 2020, discloses an opening degree indicator device for a gate, including a housing, an input shaft installed in the housing, and a hollow upright fixed above the housing. The device is characterized by further including a chain; a drive sprocket is installed on the input shaft; a planetary reducer is fixedly connected to the hollow upright; one end of the planetary reducer is connected to a driven shaft; the other end of the planetary reducer is connected to a pointer; a driven sprocket is installed on the driven shaft; the driven sprocket is connected to the drive sprocket via a chain; and the input shaft drives the driven sprocket to rotate via the chain through the drive sprocket.

[0003] In the aforementioned prior art, a single pointer is used to indicate the gate opening degree. However, in scenarios with small ranges or high precision, the scale needs to be further subdivided. But the visual resolution of a single pointer is limited, which may lead to reading errors and insufficient accuracy. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a dual-pointer gate opening indicator, which can improve reading accuracy and achieve accurate gate opening.

[0005] This utility model is achieved through the following technical solution: A dual-pointer gate opening indicator includes a gearbox and a dial. The dial is disposed on one side of the gearbox. A driven shaft is rotatably mounted on the gearbox. One end of the driven shaft is located outside the gearbox, and the other end is located inside the gearbox. A driven sprocket is fixedly mounted on the end of the driven shaft located outside the gearbox. A gear I is fixedly mounted on the end of the driven shaft located inside the gearbox. The gearbox is rotatably assembled with a rotating shaft, and gears II, III, and IV are fixedly assembled on the rotating shaft. Gear II meshes with gear I. A rotating bushing is rotatably mounted on the side wall of the gearbox near the dial; one end of the rotating bushing is located inside the gearbox, and the other end extends out of the dial; a gear V is fixedly mounted on the end of the rotating bushing inside the gearbox, and a first pointer is fixedly mounted on the end of the rotating bushing extending out of the dial; gear V meshes with gear IV. A gear shaft is rotatably mounted inside the rotating bushing. Both ends of the gear shaft extend out of the rotating bushing. Gear VI is fixedly mounted on the end of the gear shaft located inside the gearbox. A second pointer is fixed on the end of the gear shaft extending out of the dial. Gear VI meshes with gear III.

[0006] Furthermore, the rotating bushing includes a gear mounting sleeve and a short pointer bushing, which are fixedly connected by connecting bolts, and the short pointer bushing is connected to the first pointer.

[0007] Furthermore, a rotating bearing for supporting the gear shaft is provided inside the rotating bushing.

[0008] Furthermore, a self-lubricating bearing I is mounted on the driven shaft; a self-lubricating bearing II is mounted on the gear mounting kit; and a self-lubricating bearing II is mounted on the gear mounting kit.

[0009] Furthermore, the shaft is equipped with a self-lubricating bearing III.

[0010] Furthermore, a transparent protective cover is fixedly connected to one side of the gearbox, and the dial, the first pointer, and the second pointer are located inside the transparent protective cover.

[0011] Furthermore, the transparent protective cover includes a dial cover and an acrylic glass panel. The dial cover is fixed to the gearbox by bolts, the dial is mounted on the dial cover, and the acrylic glass panel is mounted on the front end of the dial cover.

[0012] Furthermore, a rubber sealing strip is installed at the connection between the dial cover and the plexiglass.

[0013] Furthermore, a spacer ring is provided on the gear mounting sleeve, and the spacer ring is located between gear V and self-lubricating bearing II.

[0014] Furthermore, the first pointer is mounted on the short pointer bushing and is tightened and fixed by a round nut and a locking washer; the second pointer is mounted on the gear shaft and is tightened and fixed by a nut and a washer.

[0015] The beneficial effects of this utility model are as follows: 1. In this utility model, the combination of sprocket, chain, and gear transmission not only improves the transmission speed ratio range, making this utility model applicable to a wider range of gate lifting height displays, but also improves transmission efficiency; the high-precision sprocket transmission improves display accuracy; and the structure is simple, easy to assemble and maintain, and has the advantages of reliable operation, high precision, and easy adjustment.

[0016] 2. In this utility model, the gearbox is fixedly connected with a transparent protective cover. The transparent protective cover will not affect the reading of the pointer meter, and can also prevent the dial and pointer of the pointer meter from being directly damaged by external factors, thus ensuring the normal reading of the gate opening. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the gate opening and closing mechanism of this utility model; Figure 2 This is a schematic diagram of the present invention without the gate opening and closing mechanism connected. Figure 3 This is a schematic diagram of the structure of this utility model.

[0018] Reference numerals: 1-Input shaft, 2-Driving sprocket, 3-Chain, 4-Driven sprocket, 5-Driven shaft, 6-Self-lubricating bearing I, 7-Gearbox, 8-Gear I, 9-Gear shaft, 10-Gear V, 11-Self-lubricating bearing II, 12-Dial cover, 13-Rubber sealing strip, 14-Digital dial, 15-First pointer, 16-Second pointer, 17-Spacer ring, 18-Short pointer bushing, 19-Stop washer, 20-Nut, 21-Connecting bolt, 22-Self-lubricating bearing III, 23-Acrylic glass, 24-Gear IV, 25-Gear II, 26-Shaft, 27-Gear mounting sleeve, 28-Gear III, 29-Gate opener / closer, 30-Transparent protective cover, 31-Spacer sleeve. Detailed Implementation

[0019] Example 1 A dual-pointer gate opening indicator includes a gearbox 7 and a dial 14. The dial 14 is disposed on one side of the gearbox 7. A driven shaft 5 is rotatably mounted on the gearbox 7. One end of the driven shaft 5 is located outside the gearbox 7, and the other end is located inside the gearbox 7. A driven sprocket 4 is fixedly mounted on the end of the driven shaft 5 located outside the gearbox 7. A gear I8 is fixedly mounted on the end of the driven shaft 5 located inside the gearbox 7. The gearbox 7 is rotatably assembled with a rotating shaft 26, and gears II 25, III 28, and IV 24 are fixedly assembled on the rotating shaft 26. Gear II 25 meshes with gear I 8. A rotating bushing is rotatably mounted on the side wall of the gearbox 7 near the dial 14; one end of the rotating bushing is located inside the gearbox 7, and the other end extends out of the dial 14. Gear V10 is fixedly mounted on the end of the rotating bushing inside the gearbox 7, and a first pointer 15 is fixedly mounted on the end of the rotating bushing extending out of the dial 14. Gear V10 meshes with gear IV24. A gear shaft 9 is rotatably mounted inside the rotating bushing. Both ends of the gear shaft 9 extend out of the rotating bushing. Gear VI is fixedly mounted on the end of the gear shaft 9 located inside the gearbox 7. A second pointer 16 is fixedly mounted on the end of the gear shaft 9 extending out of the dial 14. Gear VI meshes with gear III 28.

[0020] In practice, one end of the input shaft 1 is connected to the rotating shaft of the gate hoist 29, and the other end of the input shaft 1 is fixedly equipped with a drive sprocket 2. The drive sprocket 2 and the driven sprocket 4 are connected by a chain 3.

[0021] When the gate hoist 29 is started, the input shaft 1 begins to rotate. The drive sprocket 2, which is fixedly mounted on the input shaft 1, rotates synchronously with the input shaft 1. When the drive sprocket 2 rotates, the chain 3 is driven, which in turn drives the driven sprocket 4 to rotate. The driven sprocket 4 is fixedly mounted on the driven shaft 5, so the driven shaft 5 rotates synchronously with the driven sprocket 4.

[0022] When the driven shaft 5 rotates, the gear I8 mounted on the end of the driven shaft 5 located inside the gearbox 7 rotates. Gear I8 meshes with gear II 25 on the rotating shaft 26, driving gear II 25 to rotate. Gear II 25, gear III 28, and gear IV 24 are fixedly mounted on the rotating shaft 26. Therefore, the rotating shaft 26 rotates synchronously with gear II 25, and gear IV 24 rotates accordingly. Gear IV 24 meshes with gear V 10, driving gear V 10 to rotate. Gear V 10 is fixedly mounted on the end of the rotating shaft sleeve located inside the gearbox 7. Therefore, the rotating shaft sleeve rotates synchronously with gear V 10. When the rotating shaft sleeve rotates, the first pointer 15 rotates synchronously.

[0023] When the shaft 26 rotates, gear III 28 meshes with gear VI on gear shaft 9, causing gear VI to rotate. Gear shaft 9 rotates synchronously with gear VI. When gear shaft 9 rotates, the second pointer 16 rotates synchronously with gear shaft 9.

[0024] In this embodiment, the first pointer 15 is a foot pointer, and the second pointer 16 is an inch pointer. The inch pointer rotates 360° to 12 inches, and the foot pointer rotates one division to 1 foot.

[0025] The first pointer 15 is a gear transmission. Gear I8 has 39 teeth, gear II 25 has 132 teeth, gear IV 24 has 117 teeth, and gear V 10 has 54 teeth. The gear transmission ratio is 1 / (132 / 39×117 / 54)=0.13636, which is a speed reduction transmission.

[0026] The second pointer 16 has a gear transmission with gear I8 having 39 teeth, gear II 25 having 132 teeth, gear III 28 having 161 teeth, and gear VI having 10 teeth. The gear transmission ratio is 1 / (132 / 39×10 / 161) = 4.7636, which is a speed-increasing transmission.

[0027] The precise positioning of the first pointer 15, which moves one notch for every one revolution of the second pointer 16, is achieved by the transmission of two gears in the gearbox 7. This allows for a direct display of the gate opening in inches and feet, avoiding conversion errors caused by a single pointer.

[0028] The combination of sprocket, chain, and gear transmission not only improves the transmission speed ratio range, making this gate opening device suitable for displaying a wider range of gate lifting heights, but also improves transmission efficiency; the high-precision sprocket transmission improves display accuracy; this gate opening device also has a simple structure, is easy to assemble and maintain, operates reliably, has high precision, and is easy to adjust.

[0029] Example 2 This embodiment further elaborates and supplements the implementation of this utility model based on Embodiment 1.

[0030] The rotating bushing includes a gear mounting sleeve 27 and a short pointer bushing 18. The gear mounting sleeve 27 and the short pointer bushing 18 are fixedly connected by a connecting bolt 21, and the short pointer bushing 18 is connected to the first pointer 15.

[0031] A rotating bearing for supporting gear shaft 9 is installed inside the rotating bushing.

[0032] The driven shaft 5 is equipped with a self-lubricating bearing I6, which provides self-lubrication for the driven shaft 5, reduces friction, improves wear resistance, and enhances the transmission efficiency of the opening indicator device; the gear mounting sleeve 27 is equipped with a self-lubricating bearing II11, which provides self-lubrication for the gear mounting sleeve 27, reduces friction, improves wear resistance, and enhances the transmission efficiency of the opening indicator device.

[0033] In this embodiment, a spacer 31 is installed on the driven shaft 5 located between the driven sprocket 4 and the self-lubricating bearing I6 to position the driven sprocket 4 and the self-lubricating bearing I6.

[0034] Furthermore, the rotating shaft 26 is equipped with a self-lubricating bearing Ⅲ22 to provide self-lubrication for the rotating shaft and reduce friction.

[0035] Example 3 This embodiment further elaborates and supplements the implementation of the present invention based on Embodiment 1 or Embodiment 2.

[0036] A transparent protective cover 30 is fixedly connected to one side of the gearbox 7, and the dial 14, the first pointer 15, and the second pointer 16 are located inside the transparent protective cover 30. The transparent protective cover 30 will not affect the reading of the pointers, and can also prevent the dial 14 and the pointers from being directly damaged by external factors, thus ensuring the normal reading of the gate opening.

[0037] The transparent protective cover 30 includes a dial cover 12 and an acrylic glass 23. The dial cover 12 is fixed to the gearbox 7 with bolts, and the scale 14 is mounted on the dial cover 12. The acrylic glass 23 is mounted on the front end of the dial cover 12. The selection of acrylic glass 23 ensures that the operator can clearly observe the rotation of the pointer and the scale 14, facilitating reading. Furthermore, acrylic glass 23 is lightweight, reducing the overall weight of the protective cover and lowering the load on the gearbox 7.

[0038] A rubber sealing strip 13 is installed at the connection between the dial cover 12 and the plexiglass 23.

[0039] A spacer ring 17 is provided on the gear mounting sleeve 27, and the spacer ring 17 is located between gear V10 and self-lubricating bearing II11 to limit the position of self-lubricating bearing II11.

[0040] The first pointer 15 is mounted on the short pointer bushing 18 and is tightened and fixed by the cooperation of the round nut and the stop washer 19; the second pointer 16 is mounted on the gear shaft 9 and is tightened and fixed by the cooperation of the nut 20 and the washer.

Claims

1. A dual-pointer gate opening indicator device, comprising a gearbox (7) and a dial (14), the dial (14) being disposed on one side of the gearbox (7), characterized in that: A driven shaft (5) is rotatably mounted on the gearbox (7). One end of the driven shaft (5) is located outside the gearbox (7), and the other end is located inside the gearbox (7). A driven sprocket (4) is fixedly mounted on the end of the driven shaft (5) located outside the gearbox (7). A gear I (8) is fixedly mounted on the end of the driven shaft (5) located inside the gearbox (7). The gearbox (7) is rotatably fitted with a rotating shaft (26), and gears II (25), III (28), and IV (24) are fixedly fitted on the rotating shaft (26). Gear II (25) meshes with gear I (8). A rotating bushing is rotatably mounted on the side wall of the gearbox (7) near the dial (14); one end of the rotating bushing is located inside the gearbox (7), and the other end extends out of the dial (14). Gear V (10) is fixedly mounted on the end of the rotating bushing inside the gearbox (7), and a first pointer (15) is fixed on the end of the rotating bushing extending out of the dial (14). Gear V (10) meshes with gear IV (24). The rotating bushing is fitted with a gear shaft (9), with both ends of the gear shaft (9) extending out of the rotating bushing. Gear VI is fixedly fitted on the end of the gear shaft (9) located inside the gearbox (7). A second pointer (16) is fixed on the end of the gear shaft (9) extending out of the dial (14). Gear VI meshes with gear III (28).

2. The dual-pointer gate opening indicator device as described in claim 1, characterized in that: The rotating bushing includes a gear mounting sleeve (27) and a short pointer bushing (18). The gear mounting sleeve (27) and the short pointer bushing (18) are fixedly connected by a connecting bolt (21), and the short pointer bushing (18) is connected to the first pointer (15).

3. The dual-pointer gate opening indicator device as described in claim 1, characterized in that: The rotating bushing is provided with a rotating bearing for supporting the gear shaft (9).

4. The dual-pointer gate opening indicator device as described in claim 2, characterized in that: Self-lubricating bearing I (6) is mounted on the driven shaft (5); self-lubricating bearing II (11) is mounted on the gear mounting sleeve (27).

5. A dual-pointer gate opening indicator device as described in any one of claims 1-3, characterized in that: The shaft (26) is equipped with a self-lubricating bearing Ⅲ (22).

6. A dual-pointer gate opening indicator device as described in any one of claims 1-3, characterized in that: A transparent protective cover (30) is fixedly connected to one side of the gearbox (7), and the dial (14), the first pointer (15) and the second pointer (16) are located inside the transparent protective cover (30).

7. The dual-pointer gate opening indicator device as described in claim 6, characterized in that: The transparent protective cover (30) includes a dial cover (12) and an acrylic glass (23). The dial cover (12) is fixed to the gearbox (7) by bolts, the dial (14) is mounted on the dial cover (12), and the acrylic glass (23) is mounted on the front end of the dial cover (12).

8. The dual-pointer gate opening indicator device as described in claim 7, characterized in that: A rubber sealing strip (13) is installed at the connection between the dial cover (12) and the plexiglass (23).

9. A dual-pointer gate opening indicator device as described in claim 2, characterized in that: A spacer ring (17) is provided on the gear mounting sleeve (27), and the spacer ring (17) is located between gear V (10) and self-lubricating bearing II (11).

10. A dual-pointer gate opening indicator device as described in claim 9, characterized in that: The first pointer (15) is mounted on the short pointer bushing (18) and is tightened and fixed by a round nut and a stop washer (19); the second pointer (16) is mounted on the gear shaft (9) and is tightened and fixed by a nut (20) and a washer.

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