Descending device testing device and testing method

Abstract

The present invention provides a descender test device and a test method. The machine tool body is placed on the floor of a high floor. The right side of the I-beam extends out and crosses the stairwell passage space. The end bracket is placed on the staircase turning floor, and the top supports the end of the I-beam. The first detection weight is fixedly connected to the machine rope of the first pneumatic clutch winch, and the second detection weight is fixedly connected to the machine rope of the second pneumatic clutch winch. The descender rope passes through the descender, and the two ends of the descender rope are respectively fixedly connected to the first and second detection weights. The first and second detection weights are located in the stairwell passage space, and the upper and lower detection sensors are fixed to the corresponding positions of the stairwell passage space below the I-beam. The present invention does not need to occupy a fixed site, and cleverly utilizes the walking stairs and stairwell passage space, which is convenient and quick to disassemble and install. As long as a sufficient height platform can be provided, it can be moved to a new test site for on-site assembly and complete the testing of new products.

Description

Technical Field

[0001] The invention belongs to the field of performance test devices for descending devices, and in particular relates to a test device and a test method for descending devices. Background Art

[0002] Descending devices are mainly used by firefighters, traffic police, and armed police forces in situations such as fires, earthquakes, and emergency rescues. They are an important tool for ensuring the safety of a person falling rapidly from a height. Especially as existing floors become higher and higher, descending devices will surely become a powerful guarantee for the safety of human life.

[0003] There are two existing devices for testing descenders. One is to indirectly test the practicality of the descender through a torque test device; the other is to build a separate descending test platform to test the descender. Building a separate descending platform not only costs a lot of money, but also takes up a large area. Moreover, when the model of the descender changes, there is a problem that the built descending platform cannot be used. Summary of the invention

[0004] In view of this, the present invention proposes a descending device testing device, which is specifically:

[0005] It includes a machine tool body, a gear box, an I-beam, a first pneumatic clutch winch, a second pneumatic clutch winch, an end bracket, a first detection weight, a second detection weight, an upper detection sensor and a lower detection sensor;

[0006] The gear box is fixed on the machine tool body, and the I-beam passes through the gear box horizontally and can be driven by the gear box to move in the horizontal direction;

[0007] A descender mounting part for fixing the descender to be tested is fixed under the I-beam located on the right side of the gearbox. The first pneumatic clutch winch and the second pneumatic clutch winch are both equipped with running cars. The first pneumatic clutch winch and the second pneumatic clutch winch are respectively connected to the I-beam through their respective running cars, and can move toward or away from the descender mounting part along the I-beam in the horizontal direction under the drive of their respective running cars.

[0008] The end bracket is used to support the right end of the I-beam, i.e. the end of the I-beam;

[0009] The first detection weight is fixedly connected to the machine rope of the first pneumatic clutch winch, the second detection weight is fixedly connected to the machine rope of the second pneumatic clutch winch through a lock, the descending rope passes through the descender fixed to the descender mounting part, and the left end of the descending rope is fixedly connected to the first detection weight through the lock, and the right end of the descending rope is fixedly connected to the second detection weight through the lock;

[0010] The upper detection sensor and the lower detection sensor are installed below the installation part of the descender and can detect the sensed positions when the first and second detection weights descend.

[0011] Furthermore, a rack is fixedly provided on the upper surface of the I-beam, a roller row rotatably supporting the lower surface of the I-beam is provided at the lower part of the gear box, a driving wheel meshing with the rack is provided at the upper part of the gear box, and the driving wheel is driven to rotate by a power source.

[0012] Furthermore, a counterweight block is provided at the left end of the I-beam.

[0013] Furthermore, the I-beam is also fixedly provided with near and far limit sensors corresponding to the near and far travel positions of the first and second pneumatic clutch winches relative to the installation part of the descender.

[0014] The present invention also provides a method for testing a descending device, using the descending device testing device as described above.

[0015] Furthermore, the descending device testing method further includes:

[0016] Step 1, place the machine tool body on the high floor of a floor of appropriate height, the right side of the I-beam extends out and crosses the stairwell passage space, the end bracket is placed on the stair turning floor, and its top supports the end of the I-beam; the descender is fixedly installed on the descender installation part, the first detection weight is fixedly connected to the machine rope of the first pneumatic clutch winch through a lock, the second detection weight is fixedly connected to the machine rope of the second pneumatic clutch winch through a lock, the descending rope passes through the descender, and the left end of the descending rope is fixedly connected to the first detection weight through a lock, and the right end of the descending rope is fixedly connected to the second detection weight through a lock; the first detection weight and the second detection weight are located in the stairwell passage space, and the upper detection sensor and the lower detection sensor are fixed to the corresponding positions of the stairwell passage space below the I-beam;

[0017] Step 2: Move the second pneumatic clutch winch along the I-beam to the near end of the descender and keep it in a fixed position, retract the rope of the second pneumatic clutch winch to the shortest and then lock the pneumatic clutch of the second pneumatic clutch winch; then move the first pneumatic clutch winch along the I-beam to the far end away from the descender and keep it in a fixed position, retract the rope of the first pneumatic clutch winch to the shortest and then lock the pneumatic clutch of the first pneumatic clutch winch; adjust the descending rope passing through the descender, so that the length of the descending rope between the second pneumatic clutch winch and the descender is the shortest and remains taut, and the length of the descending rope between the first pneumatic clutch winch and the descender is the longest and is in a relaxed drooping state, reserving a corresponding length of descending rope for the release of the descender and the descent of the second detection weight; and the second detection weight is located at or above the corresponding sensing position of the upper detection sensor;

[0018] Step 3: Release the pneumatic clutch of the second pneumatic clutch winch, thereby releasing its machine rope, so that the second detection weight falls through the sensing position of the lower detection sensor, and calculate the time difference between the second detection weight passing through the upper detection sensor and the lower detection sensor during the falling process, so as to calculate the falling speed and obtain the test data of the clockwise release of the descender;

[0019] Step 4: Move the first pneumatic clutch winch along the I-beam to the near end of the descender and keep it in a fixed position, retract the rope of the first pneumatic clutch winch to the shortest, and then lock the pneumatic clutch of the first pneumatic clutch winch; then move the second pneumatic clutch winch along the I-beam to the far end away from the descender and keep it in a fixed position, retract the rope of the second pneumatic clutch winch to the shortest, and then lock the pneumatic clutch of the second pneumatic clutch winch; adjust the descending rope passing through the descender, so that the length of the descending rope between the first pneumatic clutch winch and the descender is the shortest and kept in a taut state, and the length of the descending rope between the second pneumatic clutch winch and the descender is the longest and is in a relaxed drooping state, so as to reserve a corresponding length of the descending rope for the release of the descender and the descent of the first detection weight; and the first detection weight is located at or above the corresponding sensing position of the upper detection sensor;

[0020] Step 5: Release the pneumatic clutch of the first pneumatic clutch winch, thereby releasing its machine rope, so that the first detection weight falls through the sensing position of the lower detection sensor, and calculate the time difference between the first detection weight passing through the upper detection sensor and the lower detection sensor during the falling process, so as to calculate the falling speed and obtain the test data of the counterclockwise release of the descender;

[0021] Step 6: Repeat steps 2 to 5 until a sufficient number of test data are obtained.

[0022] The descender test device of the present invention does not need to occupy a fixed site, but cleverly utilizes the space of walking stairs and stairwell passages. Each module is relatively light and convenient for quick disassembly and installation. As long as a sufficient height platform can be provided, it can be moved to a new test site for on-site assembly and complete the testing of new products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the installation structure of the descent test device;

[0025] Figure 2 It is a state diagram of step 1 in the test method;

[0026] Figure 3 It is a state diagram of step 2 in the test method;

[0027] Figure 4 This is a state diagram of step three in the test method.

[0028] In the figure, 1-machine body; 2-counterweight; 3-gearbox; 4-driving wheel; 5-I-beam; 6-rack; 7a-first proximal limit sensor; 7b-first distal limit sensor; 8a-first pneumatic clutch winch; 8b-second pneumatic clutch winch; 9-descender mounting part; 10-descender; 11a-second proximal limit sensor; 11b-second distal limit sensor; 12a-high floor; 12b-stair corner floor; 12c-stairwell floor; 14-upper detection sensor; 15-lower detection sensor; 17a-first detection weight; 17b-second detection weight; 18-end bracket. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] like Figure 1 As shown, the descending device testing device of the present invention includes a machine tool body 1, a gear box 3, an I-beam 5, a first pneumatic clutch winch 8a, a second pneumatic clutch winch 8b, an end bracket 18, a first detection weight 17a, a second detection weight 17b, an upper detection sensor 14 and a lower detection sensor 15;

[0032] The gear box 3 is fixed on the machine tool body 1, and the I-beam 5 passes through the gear box 3 horizontally and can be driven by the gear box 3 to move in the horizontal direction, that is, the I-beam 5 can be extended and retracted in the horizontal direction relative to the gear box 3; there are various structures to realize the function of the I-beam 5 being able to extend and retract in the horizontal direction relative to the gear box 3. For example, a rack 6 is fixedly provided on the upper surface of the I-beam 3, a roller row supporting the lower surface of the I-beam 3 and being able to slide relatively is provided at the lower part of the gear box 3, and a driving wheel 4 meshing with the rack 6 is provided at the upper part of the gear box 3. The driving wheel 4 can be driven to rotate by a power source such as a reduction motor or a stepping motor through a transmission form such as a belt drive and a chain drive. The power source, the gas source for providing control gas to the first pneumatic clutch winch 8a and the second pneumatic clutch winch 8b, the control panel, etc. can be integrated and installed on the machine tool body.

[0033] A retarder mounting portion 9 for fixing the retarder 10 to be tested is fixed below the I-beam 5 located on the right side of the gear box 3. The first pneumatic clutch winch 8a and the second pneumatic clutch winch 8b are both winches with built-in sports cars. The first pneumatic clutch winch 8a and the second pneumatic clutch winch 8b are respectively connected to the I-beam 5 through their own sports cars, and can be laterally displaced along the length direction of the I-beam 5 driven by their own sports cars, that is, they can move closer to or farther away from the retarder mounting portion 9 and the retarder 10 thereon in the laterally direction.

[0034] The end bracket 18 is used to support the right end of the I-beam 5, that is, the end of the I-beam, so that the I-beam 5 maintains a horizontal posture. Preferably, in order to make the gravity balance effect of the I-beam after bearing the weight better, a counterweight block 2 can also be provided at the left end of the I-beam.

[0035] During the test, the first test weight 17a is fixedly connected to the machine rope of the first pneumatic clutch winch 8a through a lock, the second test weight 17b is fixedly connected to the machine rope of the second pneumatic clutch winch 8b through a lock, the descending rope (shown by the thick line in the figure) passes through the descender 10 fixed to the descender mounting part 9, and the left end of the descending rope is fixedly connected to the first test weight 17a through the lock, and the right end of the descending rope is fixedly connected to the second test weight 17b through the lock.

[0036] The upper detection sensor 14 and the lower detection sensor 15 are installed below the descender mounting portion 9 and the descender 10 to sense and detect the moment when the first detection weight 17a and the second detection weight 17b descend and pass the corresponding position.

[0037] Furthermore, in order to control the displacement stroke by induction, the I-beam is also fixedly provided with a first proximal limit sensor 7a and a first distal limit sensor 7b corresponding to the first pneumatic clutch winch 8a, and a second proximal limit sensor 11a and a second distal limit sensor 11b corresponding to the second pneumatic clutch winch 8b.

[0038] The descender test device can utilize the stairwell passage space of the building's walking staircase as the space for the first and second detection weights to be raised and lowered;

[0039] Combine the following Figures 2 to 4 The test method of this descending device test device is introduced in detail:

[0040] Combination Figure 2As shown, step 1, place the machine tool body 1 on the high floor 12a of the floor of an appropriate height, the right side of the I-beam 5 extends out and crosses the stairwell passage space, the end bracket 18 is placed on the stair turning floor 12b, and its top supports the end of the I-beam 5; the descender 10 is fixedly mounted on the descender mounting portion 9, the first detection weight 17a is fixedly connected to the machine rope of the first pneumatic clutch winch 8a through a lock, the second detection weight 17b is fixedly connected to the machine rope of the second pneumatic clutch winch 8b through a lock, the descending rope passes through the descender 10, and the left end of the descending rope is fixedly connected to the first detection weight 17a through a lock, and the right end of the descending rope is fixedly connected to the second detection weight 17b through a lock; and the first detection weight 17a and the second detection weight 17b are located in the stairwell passage space, and the upper detection sensor 14 and the lower detection sensor 15 are fixed to the corresponding positions of the stairwell passage space below the I-beam 5;

[0041] Combination Figure 3 As shown, step 2, the second pneumatic clutch winch 8b is moved along the I-beam to the proximal end near the descending device 10 and kept in a fixed position, and the rope of the second pneumatic clutch winch 8b is recovered to the shortest, and the pneumatic clutch of the second pneumatic clutch winch 8b is locked; then the first pneumatic clutch winch 8a is moved along the I-beam 5 to the far end away from the descending device 10 and kept in a fixed position, and the rope of the first pneumatic clutch winch 8a is recovered to the shortest, and the first pneumatic clutch winch 8a is locked. The pneumatic clutch is locked; the descending rope passing through the descender is adjusted so that the length of the descending rope between the second pneumatic clutch winch 8b and the descender is the shortest and kept in a taut state, and the length of the descending rope between the first pneumatic clutch winch 8a and the descender is the longest and in a relaxed drooping state, so that a corresponding length of the descending rope is reserved for the release of the descender and the descent of the second detection weight; and the second detection weight 17b is located at or above the corresponding sensing position of the upper detection sensor 14;

[0042] Combination Figure 4 As shown, step three, the pneumatic clutch of the second pneumatic clutch winch 8b is released, thereby releasing its machine rope, so that the second detection weight falls through the sensing position of the lower detection sensor 15, and the time difference between the second detection weight passing through the upper detection sensor 14 and the lower detection sensor 15 during the falling process is calculated, so as to calculate the falling speed and obtain the test data of the clockwise release of the descender;

[0043] Step 4: Move the first pneumatic clutch winch 8a along the I-beam to the near end near the descender 10 and keep it fixed, and retract the rope of the first pneumatic clutch winch 8a to the shortest, and then pneumatically lock the first pneumatic clutch winch 8a; then move the second pneumatic clutch winch 8b along the I-beam 5 to the far end away from the descender 10 and keep it fixed, and retract the rope of the second pneumatic clutch winch 8b to the shortest, and then pneumatically lock the second pneumatic clutch winch 8b. The dynamic clutch is locked; the descending rope passing through the descender is adjusted so that the length of the descending rope between the first pneumatic clutch winch 8a and the descender is the shortest and kept in a taut state, and the length of the descending rope between the second pneumatic clutch winch 8b and the descender is the longest and in a relaxed drooping state, so that a corresponding length of the descending rope is reserved for the release of the descender and the descent of the first detection weight; and the first detection weight 17a is located at or above the corresponding sensing position of the upper detection sensor 14;

[0044] Step 5: Release the pneumatic clutch of the first pneumatic clutch winch 8a, thereby releasing its machine rope, so that the first detection weight falls through the sensing position of the lower detection sensor 15, and calculate the time difference between the first detection weight passing through the upper detection sensor 14 and the lower detection sensor 15 during the falling process, so as to calculate the falling speed and obtain the test data of the counterclockwise release of the descender;

[0045] Step 6: Repeat steps 2 to 5 until a sufficient number of test data are obtained.

[0046] It should be noted that the test weights must be assembled upstairs and no one is allowed to stand under the descender at any time; during the test, there must be a dedicated person to monitor the area below the descender and no one is allowed to enter the test area and corridor.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The descending device test device is characterized by: It comprises a machine tool body (1), a gear box (3), an I-beam (5), a first pneumatic clutch winch (8a), a second pneumatic clutch winch (8b), an end bracket (18), a first detection weight (17a), a second detection weight (17b), an upper detection sensor (14) and a lower detection sensor (15); The gear box (3) is fixed on the machine tool body (1), and the I-beam (5) passes through the gear box (3) horizontally and can be driven by the gear box (3) to move in the horizontal direction; A descender mounting portion (9) for fixing the descender (10) to be tested is fixed below the I-beam (5) on the right side of the gear box (3); the first pneumatic clutch winch (8a) and the second pneumatic clutch winch (8b) are both equipped with running cars; the first pneumatic clutch winch (8a) and the second pneumatic clutch winch (8b) are respectively connected to the I-beam (5) through their respective running cars, and can move towards or away from the descender mounting portion (9) along the I-beam (5) in the horizontal direction under the drive of their respective running cars; The end bracket (18) is used to support the right end of the I-beam (5), i.e., the end of the I-beam; The first detection weight (17a) is fixedly connected to the machine rope of the first pneumatic clutch winch (8a), the second detection weight (17b) is fixedly connected to the machine rope of the second pneumatic clutch winch (8b) through a lock, the descending rope passes through the descender (10) fixed to the descender mounting part (9), and the left end of the descending rope is fixedly connected to the first detection weight (17a) through the lock, and the right end of the descending rope is fixedly connected to the second detection weight (17b) through the lock; The upper detection sensor (14) and the lower detection sensor (15) are installed below the descender mounting portion (9) and can detect the sensed positions when the first and second detection weights descend.

2. The descending device testing device according to claim 1, characterized in that: A rack (6) is fixedly provided on the upper surface of the I-beam, a roller row for rotatably supporting the lower surface of the I-beam is provided at the lower part of the gear box (3), a driving wheel (4) meshing with the rack (6) is provided at the upper part of the gear box (3), and the driving wheel (4) is driven to rotate by a power source.

3. The descending device testing device according to claim 1, characterized in that: A counterweight block (2) is also provided at the left end of the I-beam.

4. The descending device testing device according to claim 1, characterized in that: The I-beam is also fixedly provided with near and far limit sensors respectively corresponding to the near and far travel positions of the first and second pneumatic clutch winches relative to the descender mounting part (9).

5. The method for testing the descending device is characterized in that: Utilize the descender test device as described in any one of claims 1 to 4.

6. The method for testing a descending device according to claim 5, characterized in that: include: Step 1: Place the machine tool body on the high floor (12a) of a floor of appropriate height, the right side of the I-beam (5) extends out and crosses the stairwell passage space, the end bracket (18) is placed on the stair turning floor (12b), and its top supports the end of the I-beam; the descender (10) is fixedly mounted on the descender mounting part (9), the first detection weight (17a) is fixedly connected to the machine rope of the first pneumatic clutch winch (8a) through a lock, and the second detection weight (17b) is fixedly connected to the second pneumatic clutch winch (8a) through a lock. The machine rope of the dynamic clutch winch (8b) is fixed, the slow-descent rope passes through the slow-descent device (10), and the left end of the slow-descent rope is fixed to the first detection weight (17a) through a lock, and the right end of the slow-descent rope is fixed to the second detection weight (17b) through a lock; the first detection weight (17a) and the second detection weight (17b) are located in the stairwell passage space, and the upper detection sensor (14) and the lower detection sensor (15) are fixed to the corresponding positions of the stairwell passage space below the I-beam (5).

7. The method for testing a descending device according to claim 6, characterized in that: Also includes: Step 2: Move the second pneumatic clutch winch (8b) along the I-beam to the near end near the descender (10) and keep the position fixed, and retract the rope of the second pneumatic clutch winch (8b) to the shortest possible length, and then pneumatically clutch and lock the second pneumatic clutch winch (8b); then move the first pneumatic clutch winch (8a) along the I-beam to the far end away from the descender and keep the position fixed, and retract the rope of the first pneumatic clutch winch (8a) to the shortest possible length, and then pneumatically clutch and lock the first pneumatic clutch winch (8a) The pneumatic clutch is locked; the descending rope passing through the descender is adjusted so that the length of the descending rope between the second pneumatic clutch winch (8b) and the descender is the shortest and remains in a taut state, and the length of the descending rope between the first pneumatic clutch winch (8a) and the descender is the longest and is in a relaxed drooping state, so that a corresponding length of the descending rope is reserved for the release of the descender and the descent of the second detection weight; and the second detection weight (17b) is located at or above the corresponding sensing position of the upper detection sensor (14); Step 3: releasing the pneumatic clutch of the second pneumatic clutch winch (8b), thereby releasing its machine rope, so that the second detection weight falls and passes through the sensing position of the lower detection sensor (15), and calculating the time difference between the second detection weight passing through the upper detection sensor (14) and the lower detection sensor (15) during the falling process, thereby calculating the falling speed and obtaining the test data of the clockwise release of the descender; Step 4: Move the first pneumatic clutch winch (8a) along the I-beam to the near end near the descender (10) and keep the position fixed, and retract the rope of the first pneumatic clutch winch (8a) to the shortest length, and then pneumatically clutch and lock the first pneumatic clutch winch (8a); then move the second pneumatic clutch winch (8b) along the I-beam (5) to the far end away from the descender (10) and keep the position fixed, and retract the rope of the second pneumatic clutch winch (8b) to the shortest length, and then pneumatically clutch and lock the second pneumatic clutch winch (8b); (8b) pneumatic clutch locking; adjusting the descending rope passing through the descender, so that the length of the descending rope between the first pneumatic clutch winch (8a) and the descender is the shortest and remains in a taut state, and the length of the descending rope between the second pneumatic clutch winch (8b) and the descender is the longest and is in a relaxed drooping state, so as to reserve a corresponding length of the descending rope for the release of the descender and the descent of the first detection weight; and the first detection weight (17a) is located at or above the corresponding sensing position of the upper detection sensor (14); Step 5: releasing the pneumatic clutch of the first pneumatic clutch winch (8a), thereby releasing its machine rope, so that the first detection weight falls and passes through the sensing position of the lower detection sensor (15), and calculating the time difference between the first detection weight passing through the upper detection sensor (14) and the lower detection sensor (15) during the falling process, thereby calculating the falling speed and obtaining the test data of the counterclockwise release of the descender; Step 6: Repeat steps 2 to 5 until a sufficient number of test data are obtained.

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