Elevator landing door gap measuring device

Abstract

The utility model discloses an elevator landing door gap measuring device, which comprises a cylinder, a first clamping piece, a second clamping piece, an air pipe and an electric air pump, two piston rods are arranged in the cylinder, the two piston rods respectively extend out of two ends of the cylinder and are fixedly connected with the first clamping piece and the second clamping piece, and the first clamping piece and the second clamping piece have the same structure. The two piston rods are symmetrically arranged and used for clamping the two oppositely-opened door leaves respectively, the two piston rods are sleeved with two compression springs respectively, and the compression springs are used for resetting the piston rods after measurement; an air inlet and an air outlet are formed in the air cylinder body, the air inlet and the air outlet are both located between the two pistons, an air nozzle is installed on the air inlet, a pressure gauge is installed on the air outlet, and the electric air pump is connected with the air nozzle through an air pipe. The measuring device is high in measuring accuracy, small, light and convenient to carry, the device can be placed outside an elevator landing door for measurement, and the safety risk of operation in an elevator hoistway is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a device for measuring the gap between elevator doors. Background Art

[0002] Elevator doors can be opened by applying a certain horizontal force. Therefore, according to the elevator supervision and inspection standards, the width of the elevator door gap needs to be measured and monitored regularly. As long as there is a deviation from the standard, it needs to be maintained. As stipulated in the A1.2.7.2(2) clause of the Elevator Supervision and Inspection and Periodic Inspection Rules (TSG T7001-2023), the opening direction of the fastest door leaf of the horizontal sliding layer door and the folding layer door is applied with a force of 150N at the most unfavorable point. The gap is not more than 30mm for the side door and not more than 45mm for the center door. The "most unfavorable point" is generally the bottom of the door leaf. The existing measurement methods are:

[0003] The first measurement method: For elevators with center-split doors, at least two people are required to cooperate during the measurement. One person uses a thrust gauge to hold the bottom of the left door leaf of the elevator floor door, and pushes the floor door open horizontally as much as possible until it reaches 150N. The other person uses a steel ruler to measure the gap value L1 between the door leaves. Then one person uses a thrust gauge to hold the bottom of the right door leaf of the elevator floor door, and pushes the floor door open horizontally as much as possible until it reaches 150N. The other person uses a steel ruler to measure the gap value L2 between the door leaves. The sum of L1 and L2 is the door leaf gap when a force of 150N is applied at the most unfavorable point.

[0004] The second measurement method: For elevators with center-split doors, at least three people are required to cooperate during the measurement. One person uses a dynamometer to hook the bottom of the left door leaf of the elevator floor door, and the other person uses a dynamometer to hook the bottom of the right door leaf of the elevator floor door. The two people pull the floor door open horizontally as much as possible until the forces of the two dynamometers reach 150N at the same time. The third person uses a steel ruler to measure the gap value L between the door leaves.

[0005] The measurement method for the side door clearance is similar. When inspecting the floor door clearance according to the requirements of the inspection regulations, the floor doors of the base station, terminal station and at least 20% of other floor stations should be sampled for inspection. The above inspection method has low inspection efficiency and requires a large number of personnel to cooperate. In addition, due to the structure of the floor door, it is difficult to achieve horizontal force when using a thrust gauge to push the floor door open, resulting in inaccurate measurement data. Utility Model Content

[0006] In order to solve the above problems, the utility model provides an elevator floor door gap measuring device.

[0007] The technical solution adopted by the utility model is:

[0008] An elevator floor door gap measuring device comprises a cylinder, a first clamping piece, a second clamping piece, an air pipe and an electric air pump. Two piston rods are arranged in the cylinder. The two piston rods extend from the two ends of the cylinder and are fixedly connected to the first clamping piece and the second clamping piece respectively. The first clamping piece and the second clamping piece have the same structure and are symmetrically arranged. They are used to clamp two door leaves that open opposite to each other. Two compression springs are respectively mounted on the two piston rods. The compression springs are used to reset the piston rods after measurement. An air inlet, an air outlet and an exhaust port are arranged on the cylinder body between the two pistons. A one-way valve and an air nozzle are installed on the air inlet, a pressure gauge is installed on the air outlet, and an exhaust valve is installed on the exhaust port. The electric air pump is connected to the air nozzle through the air pipe.

[0009] Furthermore, the first clamping member and the second clamping member both include an L-shaped rod, one end of the L-shaped rod is vertically fixedly connected to the cylinder piston rod, and the other end extends parallel to the center of the cylinder, and a U-shaped clamping structure is provided at the extended end. The U-shaped clamping structure includes a U-shaped rod with one end connected to the L-shaped rod, a first clamping plate fixed to one side of the U-shaped rod, a screw threadedly connected to the other side of the U-shaped rod, and a second clamping plate fixed to one end of the screw extending into the U-shaped rod, and the first clamping plate and the second clamping plate are used to clamp the door leaf.

[0010] By adopting the above technical solution, the door leaf is clamped by the first clamping plate and the second clamping plate, so as to ensure that the force of the cylinder pushing the door leaf is always in the horizontal direction, thereby ensuring the accuracy of the measurement result. The distance between the second clamping plate and the first clamping plate is adjusted by rotating the screw rod, so as to adapt to door leaves of different thicknesses.

[0011] Furthermore, one end of the screw rod extending outside the U-shaped rod is connected to the butterfly nut. The screw rod is driven to rotate by rotating the butterfly nut, which is easy to operate.

[0012] Furthermore, the first clamping plate and the second clamping plate are both circular flat plates with equal areas, so that the supporting forces acting on both sides of the door leaf are equal and the door leaf is evenly stressed.

[0013] Furthermore, the inner sides of the first clamping plate and the second clamping plate are connected with rubber pads to protect the surface quality of the door leaf from being damaged during measurement.

[0014] Furthermore, the air pipe is a hose, and a quick connector is provided at one end of the hose connected to the air cylinder, and the quick connector is used to connect the air nozzle, so as to facilitate the quick connection between the air pump and the air cylinder, and the air pump and the air cylinder are independent and easy to carry.

[0015] Furthermore, the piston area of ​​the cylinder is 10 cm 2 , the holding pressure of the electric air pump is 0.15MPa.

[0016] Using the above technical solution, according to the pressure formula P = F / S, where F = 150N and the cross-sectional area of ​​the piston S = 10cm 2, then the pressure acting on the cylinder body is P = 0.15MPa, thus ensuring exhaust safety.

[0017] Beneficial effects of the utility model:

[0018] 1. It can replace manual labor and improve measurement efficiency; the measuring device is small and light, easy to carry, and the device can be placed outside the elevator door for measurement, avoiding the safety risks of working in the elevator shaft.

[0019] 2. The cylinder pushes the two door leaves to move synchronously, which can ensure that the thrust is always in the horizontal direction, thus ensuring the accuracy of the measured value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the elevator floor door gap measuring device of this application.

[0021] Figure 2 This is a U-shaped card connection structure diagram of the elevator floor door gap measuring device.

[0022] Figure 3 for Figure 2 Side view of. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and a preferred implementation manner.

[0024] See also Figure 1-Figure 3 The present embodiment provides an elevator floor door gap measuring device, comprising a cylinder 1, a first clamping member 2, a second clamping member 3, an air pipe 7 and an electric air pump 6. Two piston rods are arranged in the cylinder. The two piston rods extend from the two ends of the cylinder and are fixedly connected to the first clamping member 3 and the second clamping member 4, respectively. Two compression springs are respectively mounted on the two piston rods, namely, a first compression spring 21 and a second compression spring 31. One end of the first compression spring 21 abuts against the right inner wall of the cylinder body, and the other end abuts against the right piston. One end of the second compression spring 31 abuts against the left inner wall of the cylinder body, and the other end abuts against the right piston. An air inlet 11, an air outlet 12 and an exhaust port are arranged on the cylinder body between the two piston rods. A one-way valve and an air nozzle are installed on the air inlet 11, and a pressure gauge is installed on the air outlet 12. The pressure gauge is used to detect the pressure in the cylinder. An exhaust valve is installed on the exhaust port. The exhaust valve is used to exhaust the cylinder after the detection is completed.

[0025] The first clamping member 3 and the second clamping member 4 have the same structure. Taking the first clamping member 3 as an example, it includes an L-shaped rod and a U-shaped clamping structure. One end of the L-shaped rod is vertically fixedly connected to the cylinder piston rod, and the other end extends parallel to the center of the cylinder. The extended end is provided with a U-shaped clamping structure.

[0026] The U-shaped clamping structure includes a U-shaped rod 31 , a screw rod 32 , a second clamping plate 33 , a butterfly nut 35 and a first clamping plate 34 .

[0027] The U-shaped rod 31 opens outward, one end is coaxially connected to the L-shaped rod, and the other end is parallel to the horizontal section of the L-shaped rod. The L-shaped rod and the U-shaped rod 31 are integrally formed. To ensure measurement accuracy, the thickness of the U-shaped rod 31 should be as small as possible so that it can be inserted into a smaller door gap. To improve the structural strength and stability of the rod, a wider rod can be selected, and reinforcing ribs can be set on the surface of the rod. For example, a tie bar is set between the horizontal section and the vertical section of the L-shaped rod.

[0028] The first clamping plate 34 is provided at one end of the U-shaped rod 31 connected to the L-shaped rod. The first clamping plate 34 can be formed by protruding from the side wall of the U-shaped rod 31, or can be fixedly connected to the U-shaped rod 31 after being processed separately. The screw rod 32 is vertically threadedly connected to the other end of the U-shaped rod 31. The end of the screw rod extending into the U-shaped rod is fixedly connected to the second clamping plate 33, and the end extending outside the U-shaped rod is fixedly connected to the butterfly nut 35. When the butterfly nut 35 is rotated forward, the screw rod 32 extends into the U-shaped rod, and the distance between the second clamping plate 33 and the first clamping plate 34 becomes smaller; when the butterfly nut 35 is rotated backward, the screw rod 32 extends outside the U-shaped rod, and the distance between the second clamping plate 33 and the first clamping plate 34 becomes larger.

[0029] The first clamping plate 34 is opposite to the second clamping plate 33. Preferably, the first clamping plate 34 and the second clamping plate 31 are both circular flat plates with equal areas, and the inner sides of the first clamping plate and the second clamping plate are both connected with rubber pads.

[0030] The electric air pump 6 is a prior art product and is purchased from the market. The electric air pump is connected to the air nozzle of the air cylinder through an air pipe. The preferred pressure holding pressure of the electric air pump is 0.15 MPa, and the piston area of ​​the air cylinder is 10 cm 2 The air pipe is a hose, and a quick connector is provided at one end of the hose connected to the cylinder, and the quick connector is used to connect the air nozzle.

[0031] The working mode of the utility model is:

[0032] 1. Place the device on the outside of the landing door; open the landing door, fix the first clamping member 3 and the second clamping member 4 at the lowest position of the landing door respectively, rotate the butterfly nut forward, and the first clamping plate and the second clamping plate clamp the door leaf;

[0033] 2. Connect the electric air pump 6 to the cylinder through the air pipe 7, start the electric air pump 6 to inflate the cylinder 1, and when the pressure displayed on the pressure gauge reaches 0.15MPa, stop inflating, and the electric air pump 6 maintains the pressure;

[0034] 3. Measure the door clearance manually with a steel ruler. The measured value M is the door clearance when a force of 150N is applied at the most unfavorable point.

[0035] 4. After the measurement is completed, open the exhaust port check valve to discharge the gas in the cylinder, and the piston rod returns to its initial position under the action of the compression spring.

[0036] The present application is also applicable to measuring the gap of a single door. During measurement, a piston rod is used to support the door frame, and another clamping member clamps the door leaf.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications are also within the protection scope of the present invention.

Claims

1. An elevator door clearance measuring device, characterized in that: It includes a cylinder, a first clamping part, a second clamping part, an air pipe and an electric air pump. Two piston rods are arranged in the cylinder. The two piston rods extend from the two ends of the cylinder and are fixedly connected to the first clamping part and the second clamping part respectively. The first clamping part and the second clamping part have the same structure and are symmetrically arranged. They are used to clamp two opposing door leaves respectively. Two compression springs are respectively mounted on the two piston rods. The compression springs are used to reset the piston rods after measurement. An air inlet, an air outlet and an exhaust port are arranged on the cylinder body between the two pistons. A one-way valve and an air nozzle are installed on the air inlet, a pressure gauge is installed on the air outlet, and an exhaust valve is installed on the exhaust port. The electric air pump is connected to the air nozzle through the air pipe.

2. The elevator door clearance measuring device according to claim 1, characterized in that: The first clamping member and the second clamping member both include an L-shaped rod, one end of the L-shaped rod is vertically fixedly connected to the cylinder piston rod, and the other end extends parallel to the center of the cylinder, and a U-shaped clamping structure is provided at the extended end, and the U-shaped clamping structure includes a U-shaped rod with one end connected to the L-shaped rod, a first clamping plate fixed to one side of the U-shaped rod, a screw threadedly connected to the other side of the U-shaped rod, and a second clamping plate fixed to one end of the screw extending into the U-shaped rod, and the first clamping plate and the second clamping plate are used to clamp the door leaf.

3. The elevator door clearance measuring device according to claim 2, characterized in that: One end of the screw rod extending out of the U-shaped rod is connected with a butterfly nut.

4. The elevator door clearance measuring device according to claim 2, characterized in that: The first clamping plate and the second clamping plate are both circular flat plates with equal areas.

5. The elevator door clearance measuring device according to claim 2, characterized in that: The inner sides of the first clamping plate and the second clamping plate are connected to the rubber pad.

6. The elevator door clearance measuring device according to claim 1, characterized in that: The air pipe is a hose, and one end of the hose connected to the cylinder is provided with a quick connector, and the quick connector is used to connect the air nozzle.

7. The elevator door clearance measuring device according to claim 1, characterized in that: The piston area of ​​the cylinder is 10 cm 2 , the holding pressure of the electric air pump is 0.15MPa.

Images