Force application clamp, elevator overload measuring device and elevator overload test mounting structure

Abstract

The utility model provides a force application clamp, an elevator overload measurement device and an elevator overload test installation structure, relates to the technical field of elevators, and solves the technical problems that a weight measurement mode is time-consuming and labor-consuming, and the detection efficiency is low. The force application clamp comprises a clamp body and an adjusting rod, the clamp body is provided with a limiting groove, the limiting groove is provided with a fixed end and an adjusting end which are oppositely arranged, a pressure sensor is fixed to the fixed end, the adjusting rod is in threaded connection with the adjusting end, and at least part of the adjusting rod can stretch into the limiting groove; when the to-be-clamped piece extends into the limiting groove, the pressure sensor and the adjusting rod can abut against the two opposite sides of the to-be-clamped piece by screwing the adjusting rod, the adjusting rod can extrude the to-be-clamped piece, and then the pressure on the pressure sensor is increased. The force application clamp replaces an original weight, and the elevator overload measuring device can realize weight-free rapid measurement, so that the measuring efficiency is improved, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a force-applying clamp, an elevator overload measuring device and an elevator overload test installation structure. Background Art

[0002] As a prerequisite indicator for the normal operation of elevators, elevator overload alarm has become a routine inspection item in daily elevator inspections.

[0003] At present, when measuring the overload of a conventional elevator, a weight equal to the rated load weight of the elevator is placed in the elevator car, and the weight is continued to be placed until the overload alarm device of the elevator sounds an alarm, and the overload alarm trigger weight is obtained to obtain the test result. Compare whether the overload alarm trigger weight is consistent with the rated load weight of the elevator.

[0004] The applicant has found that the prior art has at least the following technical problems: the existing measurement method requires placing a large number of weights in the elevator car, the detection process is cumbersome, time-consuming and labor-intensive, and the detection efficiency is low. Utility Model Content

[0005] The purpose of the utility model is to provide a force-applying clamp, an elevator overload measuring device and an elevator overload test installation structure, so as to solve the technical problems in the prior art that the method of using weights to measure the rated load of an elevator is time-consuming and labor-intensive, and the detection efficiency is low; the many technical effects that can be produced by the preferred technical scheme among the many technical schemes provided by the utility model are detailed as follows.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The force-applying clamp provided by the utility model comprises a clamp body and an adjusting rod, wherein:

[0008] The clamp body has a limiting groove, the limiting groove has a fixed end and an adjusting end arranged opposite to each other, the fixed end is fixed with a pressure sensor, the adjusting rod is threadedly connected to the adjusting end, and at least a portion of the adjusting rod can extend into the limiting groove;

[0009] When the fixture to be clamped extends into the limiting groove, twisting the adjusting rod can make the pressure sensor, the adjusting rod and the opposite sides of the fixture to be clamped abut against each other, and the adjusting rod can squeeze the fixture to be clamped, thereby increasing the pressure on the pressure sensor.

[0010] Preferably, one side of the limiting groove is an open side, and the fixture to be clamped can extend into the limiting groove from the open side.

[0011] Preferably, the clamp body is a C-shaped structure, and two ends of the C-shaped structure serve as the fixed end and the adjusting end respectively.

[0012] Preferably, an internal threaded sleeve is provided on the adjusting end, and the adjusting rod is threadably connected to the internal threaded sleeve and can pass through the internal threaded sleeve and extend into the limiting groove.

[0013] Preferably, the adjusting rod comprises a threaded rod and a handle, wherein:

[0014] The threaded rod is threadably connected to the adjusting end, and the handle is fixed to an end of the threaded rod that is away from the clamp body.

[0015] Preferably, a connecting hole is provided on the fixed end, and a locking member passes through the connecting hole to detachably fix the pressure sensor to the fixed end.

[0016] This embodiment provides an elevator overload measuring device, including a control unit, a display unit and the above-mentioned force-applying fixture, wherein:

[0017] The control unit is electrically connected to the pressure sensor and the display unit, and is used to convert the signal of the pressure sensor into a digital signal and transmit it to the display unit for display.

[0018] Preferably, the elevator overload measuring device further comprises an alarm unit, the control unit is electrically connected to the alarm unit, and the control unit is used for controlling the alarm unit to alarm when the pressure of the pressure sensor exceeds a set value.

[0019] This embodiment provides an elevator overload test installation structure, including a rope head plate and the above-mentioned force-applying clamp, wherein:

[0020] The rope head plate extends between the pressure sensor and the adjusting rod, the pressure sensor abuts against the upper surface of the rope head plate, and the end of the adjusting rod abuts against the lower surface of the rope head plate.

[0021] This embodiment provides an elevator overload test installation structure, including a car platform, a bracket and the above-mentioned force-applying fixture, wherein:

[0022] A shock-absorbing pad is fixedly connected between the bracket and the car bottom. The bracket, the shock-absorbing pad and the car bottom extend between the pressure sensor and the adjusting rod. The pressure sensor abuts against the car bottom, and the end of the adjusting rod abuts against the lower surface of the bracket.

[0023] Compared with the prior art, the force-applying clamp, elevator overload measuring device and elevator overload test installation structure provided by the utility model have the following beneficial effects: the fixture to be clamped extends into the limit groove, the pressure sensor and the adjusting rod can abut against the opposite sides of the fixture to be clamped, the adjusting rod can abut against and squeeze the fixture to be clamped under the twisting of external force, and the continuous twisting of the adjusting rod can increase the pressure of the pressure sensor at the bottom of the fixture to be clamped. When the pressure reaches the elevator overload setting value, the original elevator overload signal is adjusted to make it send out an overload alarm. Or during acceptance, the elevator overload measuring device is used to measure whether the overload value set by the elevator installation is accurate. The force-applying clamp replaces the original weights, and the elevator overload measuring device can realize rapid measurement without weights, improve measurement efficiency, and save time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a structural schematic diagram of the force-applying fixture;

[0026] Figure 2 It is a structural schematic diagram of a first embodiment of an elevator overload test installation structure;

[0027] Figure 3 It is a structural schematic diagram of a second embodiment of an elevator overload test installation structure;

[0028] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0029] Figure 5 It is a schematic diagram of the principle of the elevator overload measuring device.

[0030] In the figure, 1, clamp body; 10, limit groove; 11, fixed end; 111, connecting hole; 12, internal threaded sleeve; 2, adjusting rod; 21, threaded rod; 22, handle; 3, pressure sensor; 100, rope head plate; 200, elevator overload sensor; 300, bracket; 400, car bottom; 500, shock-absorbing pad. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the prior art, some elevator overload sensors are located under the car. The car bottom and the bracket are connected by a shock-absorbing pad. When weights are added to the car, the car bottom will compress the shock-absorbing pad. When the overload setting value is reached, the elevator overload sensor or switch is triggered to indicate that the elevator is overloaded.

[0035] Some elevator overload sensors are between the wire rope end plates. The lower rope end plate of the elevator is fixed, and the upper rope end plate presses the overload sensor. The rope end passes through the two rope end plates. When the weight added to the car reaches the overload setting value, the overload sensor is triggered to indicate that the elevator is overloaded.

[0036] Regardless of where the elevator overload sensor is installed, the elevator overload sensor in the prior art is used to detect the pressure in the car. When the pressure in the car reaches a set value, the pressure signal is transmitted to the control system of the elevator. The control system controls the alarm device to sound an alarm, thereby ensuring the safety of the elevator.

[0037] At present, when measuring the overload of a conventional elevator, a weight equal to the rated load weight of the elevator is placed in the elevator car, and the weight is continued to be placed until the elevator overload alarm device sounds an alarm, and the overload alarm trigger weight is obtained to obtain the test result. Compare whether the overload alarm trigger weight is consistent with the rated load weight of the elevator. The existing measurement method mentioned above requires placing a large number of weights in the elevator car, and the detection process is cumbersome, time-consuming, and labor-intensive, and the detection efficiency is low.

[0038] In response to the above problems, the embodiments of the utility model provide a force-applying clamp, an elevator overload measuring device and an elevator overload test installation structure. The force-applying clamp replaces the original weights. The elevator overload measuring device can realize rapid measurement without weights, improves measurement efficiency, and saves time and effort.

[0039] Combine the following Figure 1-Figure 5 The technical solution provided by the utility model is described in more detail.

[0040] Embodiment 1:

[0041] like Figure 1 As shown, the force-applying clamp provided by the utility model includes a clamp body 1 and an adjusting rod 2, wherein: the clamp body 1 has a limit groove 10, the limit groove 10 has a fixed end 11 and an adjusting end arranged oppositely, the fixed end 11 is fixed with a pressure sensor 3, the adjusting rod 2 is threadedly connected to the adjusting end, and at least a part of the adjusting rod 2 can extend into the limit groove 10; when the fixture to be clamped extends into the limit groove 10, twisting the adjusting rod 2 can make the pressure sensor 3, the adjusting rod 2 and the opposite sides of the fixture to be clamped abut against each other, and the adjusting rod 2 can squeeze the fixture to be clamped, thereby increasing the pressure on the pressure sensor 3.

[0042] Among them, the above-mentioned "pressure sensor 3" is not an elevator overload sensor, but another sensor fixed to the fixed end 11 of the force-applying clamp. By twisting the adjusting rod 2, the adjusting rod 2 squeezes the fixture to be clamped, increasing the pressure on the pressure sensor 3. The pressure sensor 3 can be electrically connected to an additional control unit and a display unit. The pressure sensor 3 transmits the pressure signal to the control unit. The control unit converts the signal of the pressure sensor 3 into a digital signal and transmits it to the display unit for display, so that the tester can understand the pressure value in real time. When the pressure reaches the elevator overload setting value, the original elevator overload signal is adjusted to issue an overload alarm. Or during acceptance, the elevator overload measurement device is used to measure whether the overload value set in the elevator installation is accurate.

[0043] Of course, by twisting the adjusting rod 2 in the opposite direction, the adjusting rod 2 can be separated from the fixture to be clamped, reducing the pressure on the pressure sensor 3. The purpose of this embodiment is mainly to increase the pressure on the pressure sensor 3. When the pressure reaches the elevator overload setting value, the original elevator overload signal is adjusted to send out an overload alarm. Or during acceptance, the elevator overload measuring device is used to measure whether the overload value set in the elevator installation is accurate.

[0044] In the force-applying fixture of this embodiment, the fixture to be clamped extends into the limit groove 10, the pressure sensor 3 and the adjusting rod 2 can abut against the opposite sides of the fixture to be clamped, and the adjusting rod 2 can abut against and squeeze the fixture to be clamped under external force. Continuously twisting the adjusting rod 2 can increase the pressure of the pressure sensor 3 at the bottom of the fixture to be clamped. When the pressure reaches the elevator overload setting value, the original elevator overload signal is adjusted to send out an overload alarm. Or during acceptance, the elevator overload measuring device is used to measure whether the overload value set by the elevator installation is accurate. The force-applying fixture replaces the original weights to apply force to the pressure sensor 3, and there is no need to carry multiple weights multiple times to apply pressure to the elevator overload sensor, which saves trouble and effort.

[0045] As an alternative embodiment, see Figure 1 As shown, one side of the limiting groove 10 is an open side, and the fixture to be clamped can extend into the limiting groove 10 from the open side.

[0046] The "fixed component to be clamped" is a component that directly applies pressure to the elevator overload sensor. Figure 2 ), car base 400 (such as Figure 3 ).

[0047] The above structure makes it easy for the adjusting rod 2 to apply pressure to the pressure sensor 3 through the clamping fixture, thereby performing rapid detection without the need for weights.

[0048] As an alternative embodiment, see Figure 1 As shown, the clamp body 1 is a C-shaped structure, and the two ends of the C-shaped structure serve as a fixed end 11 and an adjustment end respectively.

[0049] The above structure facilitates the threaded connection between the adjusting rod 2 and the clamp body 1 and facilitates the fixing of the pressure sensor 3 .

[0050] As an alternative embodiment, see Figure 1 As shown, an internal thread sleeve 12 is provided on the adjusting end, and the adjusting rod 2 is threadedly connected to the internal thread sleeve 12 and can pass through the internal thread sleeve 12 and extend into the limiting groove 10.

[0051] The adjusting rod 2 passes through the internal threaded sleeve 12 and extends into the limiting groove 10. By turning the adjusting rod 2, the distance between its end and the pressure sensor 3 can be adjusted. By continuously turning the adjusting rod 2, the adjusting rod 2 squeezes the fixture to be clamped, thereby increasing the pressure on the pressure sensor 3.

[0052] As an alternative embodiment, see Figure 1 As shown, the adjusting rod 2 includes a threaded rod 21 and a handle 22 , wherein the threaded rod 21 is threadedly connected to the adjusting end, and the handle 22 is fixed to an end of the threaded rod 21 away from the clamp body 1 .

[0053] The handle 22 may be a crossbar fixed on the threaded rod 21 , or a protrusion of other structures, so that the user can hold and twist the threaded rod 21 .

[0054] As an alternative embodiment, see Figure 1 As shown, a connecting hole 111 is provided on the fixing end 11 , and the locking member passes through the connecting hole 111 to detachably fix the pressure sensor 3 to the fixing end 11 .

[0055] The “locking member” may be a screw, a bolt, etc. The locking member detachably connects the pressure sensor 3 to improve the stability of the structure.

[0056] The force-applying clamp of this embodiment is installed at the fixed position of the elevator overload sensor, that is, the fixture to be clamped extends into the limit groove 10 (the fixture to be clamped is the elevator component fixed by the elevator overload sensor). By turning the screw, the force on the pressure sensor 3 is increased to replace the weight to achieve the purpose of rapid detection.

[0057] Embodiment 2:

[0058] See also Figure 5 As shown, this embodiment provides an elevator overload measuring device, including a control unit, a display unit and the above-mentioned force-applying clamp, wherein: the control unit is electrically connected to the pressure sensor 3 and the display unit, and is used to convert the signal of the pressure sensor 3 into a digital signal and transmit it to the display unit for display.

[0059] The control unit can be a single chip microcomputer with a pre-stored setting program, etc. The display unit includes a display screen. The pressure sensor 3 transmits the pressure signal to the control unit, which is used to convert the signal of the pressure sensor 3 into a digital signal and transmit it to the display unit for display. The display unit displays the pressure signal in real time.

[0060] The elevator overload measuring device can be used to adjust the original elevator overload signal to send out an overload alarm when the pressure on the pressure sensor 3 reaches the elevator overload setting value, thereby ensuring the accuracy of the elevator overload sensor.

[0061] Or during acceptance, use the elevator overload measuring device to measure whether the overload value set in the elevator installation is accurate.

[0062] As an optional embodiment, the elevator overload measuring device further includes an alarm unit, the control unit is electrically connected to the alarm unit, and the control unit is used to control the alarm unit to alarm when the pressure of the pressure sensor 3 exceeds a set value, so as to remind the operator. The alarm unit can be an audible and visual alarm, etc.

[0063] The elevator overload measuring device can realize rapid measurement without weights, improves measurement efficiency, and saves time and effort.

[0064] Embodiment 3:

[0065] Some elevator overload sensors 200 are between the wire rope end plates 11 (including the upper and lower rope end plates). The lower rope end plate of the elevator is fixed, and the upper rope end plate presses the elevator overload sensor 200. The rope end passes through the two rope end plates 11. When the weight added to the car reaches the elevator overload setting value, the overload sensor is triggered to prompt the elevator overload.

[0066] For this type of elevator, see Figure 2 This embodiment provides an elevator overload test installation structure, including a rope end plate 11 and the above-mentioned force clamp, wherein: the rope end plate 11 extends between the pressure sensor 3 and the adjusting rod 2, the pressure sensor 3 abuts against the upper surface of the rope end plate 11, and the end of the adjusting rod 2 abuts against the lower surface of the rope end plate 11.

[0067] In this embodiment, the pressure sensor 3 and the elevator overload sensor are arranged at the same position, which further improves the detection accuracy.

[0068] Embodiment 4:

[0069] In the prior art, some elevator overload sensors are located under the car. The car bottom 400 and the bracket 300 are connected by a shock-absorbing pad 500. When weights are added to the car, the car bottom 400 will compress the shock-absorbing pad 500. When the overload setting value is reached, the elevator overload sensor or switch is triggered to prompt that the elevator is overloaded.

[0070] For this type of elevator, see Figure 3 and Figure 4 As shown, this embodiment provides an elevator overload test installation structure, including a car platform 400, a bracket 300 and the above-mentioned force-applying clamp, wherein: a shock-absorbing pad 500 is fixedly connected between the bracket 300 and the car platform 400, the bracket 300, the shock-absorbing pad 500 and the car platform 400 extend between the pressure sensor 3 and the adjusting rod 2, the pressure sensor 3 abuts against the car platform 400, and the end of the adjusting rod 2 abuts against the lower surface of the bracket 300.

[0071] In this embodiment, the pressure sensor 3 and the elevator overload sensor are arranged at the same position, which further improves the detection accuracy.

[0072] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A force applying clamp, characterized in that: It includes a fixture body and an adjusting rod, wherein: The clamp body has a limiting groove, the limiting groove has a fixed end and an adjusting end arranged opposite to each other, the fixed end is fixed with a pressure sensor, the adjusting rod is threadedly connected to the adjusting end, and at least a portion of the adjusting rod can extend into the limiting groove; When the fixture to be clamped extends into the limiting groove, twisting the adjusting rod can make the pressure sensor, the adjusting rod and the opposite sides of the fixture to be clamped abut against each other, and the adjusting rod can squeeze the fixture to be clamped, thereby increasing the pressure on the pressure sensor.

2. The force applying fixture according to claim 1, characterized in that: One side of the limiting groove is an open side, and the fixture to be clamped can extend into the limiting groove from the open side.

3. The force applying fixture according to claim 1, characterized in that: The clamp body is a C-shaped structure, and two ends of the C-shaped structure serve as the fixed end and the adjusting end respectively.

4. The force applying clamp according to claim 1, characterized in that: An internal thread sleeve is arranged on the adjusting end, and the adjusting rod is threadably connected to the internal thread sleeve and can pass through the internal thread sleeve and extend into the limiting groove.

5. The force applying fixture according to claim 1, characterized in that: The adjusting rod comprises a threaded rod and a handle, wherein: The threaded rod is threadably connected to the adjusting end, and the handle is fixed to an end of the threaded rod that is away from the clamp body.

6. The force applying fixture according to claim 1, characterized in that: The fixed end is provided with a connecting hole, and the locking member passes through the connecting hole to detachably fix the pressure sensor to the fixed end.

7. An elevator overload measuring device, characterized in that: The device comprises a control unit, a display unit and a force applying fixture according to any one of claims 1 to 6, wherein: The control unit is electrically connected to the pressure sensor and the display unit, and is used to convert the signal of the pressure sensor into a digital signal and transmit it to the display unit for display.

8. The elevator overload measuring device according to claim 7, characterized in that: The elevator overload measuring device also includes an alarm unit, the control unit is electrically connected to the alarm unit, and the control unit is used to control the alarm unit to alarm when the pressure of the pressure sensor exceeds a set value.

9. An elevator overload test installation structure, characterized in that: It comprises a rope head plate and a force applying clamp as claimed in any one of claims 1 to 6, wherein: The rope head plate extends between the pressure sensor and the adjusting rod, the pressure sensor abuts against the upper surface of the rope head plate, and the end of the adjusting rod abuts against the lower surface of the rope head plate.

10. An elevator overload test installation structure, characterized in that: It comprises a car platform, a bracket and a force-applying clamp according to any one of claims 1 to 6, wherein: A shock-absorbing pad is fixedly connected between the bracket and the car bottom. The bracket, the shock-absorbing pad and the car bottom extend between the pressure sensor and the adjusting rod. The pressure sensor abuts against the car bottom, and the end of the adjusting rod abuts against the lower surface of the bracket.

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