Telescopic arm type force application device and elevator overload detection device

Abstract

The utility model provides a telescopic arm type force application device and an elevator overload detection device, relates to the field of elevators, and solves the problems that time and labor are wasted and the detection efficiency is low in a mode of detecting the rated load weight of an elevator by using a weight. The telescopic arm type force applying device comprises a base, a lower arm assembly, an upper arm assembly, a top seat and an adjusting rod, the base is supported at the bottom of a lift car, the lower end of the lower arm assembly is rotationally connected with the base and rotationally connected with the upper arm assembly through a shaft part, the upper end of the upper arm assembly is rotationally connected with the top seat, and the top seat is matched with an elevator upper beam to clamp a pressure sensor; the adjusting rod is in threaded connection with the shaft part, and the upper arm assembly and the lower arm assembly can be driven to extend or shorten in the vertical direction by screwing the adjusting rod, so that the pressure on the pressure sensor is increased or reduced; according to the telescopic arm type force application device, when the upper arm assembly and the lower arm assembly extend in the vertical direction, the pressure on the pressure sensor can be increased, an original weight is replaced, the measurement 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 telescopic arm type force applying device and an elevator overload detection device. 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 telescopic arm force-applying device and an elevator overload detection device, so as to solve the technical problems in the prior art that the method of using weights to detect the rated load weight of the 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 telescopic arm force applying device provided by the utility model comprises a base, a lower arm assembly, an upper arm assembly, a top seat and an adjusting rod, wherein:

[0008] The base is supported at the bottom of the car, the lower end of the lower arm assembly is rotatably connected to the base, and is rotatably connected to the upper arm assembly through a shaft, the upper end of the upper arm assembly is rotatably connected to the top seat, and the top seat cooperates with the elevator upper beam to clamp the pressure sensor;

[0009] The adjusting rod is threadedly connected to the shaft portion. By turning the adjusting rod, the upper arm assembly and the lower arm assembly can be driven to extend or shorten in the vertical direction, thereby increasing or decreasing the pressure on the pressure sensor.

[0010] Preferably, the upper arm assembly includes a first upper arm and a second upper arm both rotatably connected to the top seat, the lower arm assembly includes a first lower arm and a second lower arm both rotatably connected to the base, and the shaft portion includes a first shaft portion and a second shaft portion, wherein:

[0011] The first upper arm is rotatably connected to the first lower arm via the first shaft portion, and the second upper arm is rotatably connected to the second lower arm via the second shaft portion;

[0012] The adjusting rod assembly is threadedly connected to the first shaft portion and the second shaft portion, and twisting the adjusting rod can drive the first shaft portion and the second shaft portion to move closer to or farther from each other.

[0013] Preferably, the adjusting rod comprises a first thread segment and a second thread segment, the first thread segment and the second thread segment are threadedly connected to the first shaft portion and the second shaft portion respectively, and the thread rotation directions of the first thread segment and the second thread segment are opposite.

[0014] Preferably, a handle portion for a user to hold is fixed on the adjusting rod.

[0015] Preferably, an upper gear portion is fixed to the top of the first upper arm and the second upper arm, the top seat includes an upper mounting groove, the upper gear portion is located in the upper mounting groove and is rotatably connected to the upper mounting groove, and the two upper gear portions are meshed with each other.

[0016] Preferably, a lower gear portion is fixed to the lower ends of the first lower arm and the second lower arm, the base includes a lower mounting groove, the lower gear portion is located in the lower mounting groove and is rotatably connected to the lower mounting groove, and the two lower gear portions are meshed with each other.

[0017] Preferably, the top seat includes a support plate, and the support plate is fixed to the top of the upper mounting groove and is used to fix the pressure sensor.

[0018] The utility model also provides an elevator overload detection device, comprising a control unit, a display unit and the telescopic arm force applying device, wherein:

[0019] 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.

[0020] Preferably, the elevator overload detection 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.

[0021] Preferably, the elevator overload detection device further comprises a shock-absorbing pad, and the shock-absorbing pad is fixed between the lower beam bracket and the bottom of the car.

[0022] Compared with the prior art, the telescopic arm force-applying device and elevator overload detection device provided by the utility model have the following beneficial effects: by twisting the adjustment rod, the upper arm assembly and the lower arm assembly can be driven to extend or shorten in the vertical direction. When the upper arm assembly and the lower arm assembly extend in the vertical direction, the pressure on the pressure sensor can be increased. 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 measurement device is used to measure whether the elevator overload value set by the elevator installation is accurate. The telescopic arm force-applying device replaces the original weights, and the elevator overload detection device can realize rapid measurement without weights, improve measurement efficiency, and save time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 This is a schematic diagram of the installation of an elevator overload detection device on an elevator;

[0025] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0026] Figure 3 It is a structural schematic diagram of a telescopic arm force applying device;

[0027] Figure 4 It is a schematic diagram of the axial cross-sectional structure of the telescopic arm type force applying device;

[0028] Figure 5 It is a schematic diagram of the principle of an elevator overload detection device.

[0029] In the figure, 1, base; 2, top seat; 21, upper mounting groove; 22, support plate; 30, upper gear part; 31, first upper arm; 32, second upper arm; 40, lower gear part; 41, first lower arm; 42, second lower arm; 51, first shaft part; 52, second shaft part; 6, adjustment rod; 61, first threaded section; 62, second threaded section; 63, handle part; 7, pressure sensor; 8, shock-absorbing pad; 100, car; 200, upper beam; 300, lower beam bracket; 400, vertical beam. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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 elevator control system. The control system controls the alarm device to sound an alarm, thereby ensuring the safety of the elevator.

[0034] 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.

[0035] The utility model provides a telescopic arm force applying device and an elevator overload detection device.

[0036] Combine the following Figure 1-Figure 5 The technical solution provided by the utility model is described in more detail.

[0037] Embodiment 1:

[0038] The telescopic arm force-applying device provided by the utility model comprises a base 1, a lower arm assembly (a first lower arm 41 and a second lower arm 42), an upper arm assembly (a first upper arm 31 and a second upper arm 32), a top seat 2 and an adjusting rod 6, wherein: the base 1 is supported at the bottom of the car 100, the lower end of the lower arm assembly is rotatably connected to the base 1, and is rotatably connected to the upper arm assembly through an axis (a first axis 51 and a second axis 52), the upper end of the upper arm assembly is rotatably connected to the top seat 2, and the top seat 2 cooperates with the elevator upper beam 200 to clamp a pressure sensor 7; the adjusting rod 6 is threadedly connected to the axis, and twisting the adjusting rod 6 can drive the upper arm assembly and the lower arm assembly to extend or shorten in the vertical direction, thereby increasing or decreasing the pressure on the pressure sensor 7.

[0039] Among them, by turning the adjustment rod 6 in the forward direction, the upper arm assembly and the lower arm assembly can be driven to extend in the vertical direction, thereby increasing the pressure on the pressure sensor 7, and by turning the adjustment rod 6 in the reverse direction, the upper arm assembly and the lower arm assembly can be driven to shorten in the vertical direction, thereby reducing the pressure on the pressure sensor 7. "Forward" and "reverse" refer to relative directions, namely, clockwise and counterclockwise directions, respectively.

[0040] “The upper arm assembly and the lower arm assembly are extended or shortened in the vertical direction” means that the lengths of the upper arm assembly and the lower arm assembly in the vertical direction are increased or decreased.

[0041] Among them, the above-mentioned "pressure sensor 7" is not an elevator overload sensor, but another sensor clamped between the top seat 2 and the elevator upper beam 200. By twisting the adjustment rod 6, the upper arm assembly and the lower arm assembly can be driven to extend or shorten in the vertical direction, thereby increasing the pressure of the top seat 2 on the pressure sensor 7. The pressure sensor 7 can be electrically connected to an additional control unit and a display unit. The pressure sensor 7 transmits the pressure signal to the control unit. The control unit converts the signal of the pressure sensor 7 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 rated load value of the elevator), the original elevator overload signal is adjusted to send out an overload alarm. Or during acceptance, the elevator overload measurement device is used to measure whether the overload value set by the elevator installation is accurate.

[0042] Of course, by twisting the adjusting rod 6 in the reverse direction, the upper arm assembly and the lower arm assembly are shortened in the vertical direction, thereby reducing the pressure on the pressure sensor 7. The purpose of this embodiment is mainly to increase the pressure on the pressure sensor 7.

[0043] As an alternative embodiment, see Figure 2 and Figure 3As shown, the upper arm assembly includes a first upper arm 31 and a second upper arm 32, both of which are rotatably connected to the top seat 2; the lower arm assembly includes a first lower arm 41 and a second lower arm 42, both of which are rotatably connected to the base 1; the shaft portion includes a first shaft portion 51 and a second shaft portion 52, wherein: the first upper arm 31 and the first lower arm 41 are rotatably connected via the first shaft portion 51, and the second upper arm 32 and the second lower arm 42 are rotatably connected via the second shaft portion 52; the adjusting rod 6 assembly is threadedly connected to the first shaft portion 51 and the second shaft portion 52, and twisting the adjusting rod 6 can drive the first shaft portion 51 and the second shaft portion 52 to move closer to or away from each other.

[0044] When the first shaft portion 51 and the second shaft portion 52 are close to each other, the upper arm assembly and the lower arm assembly are extended in the vertical direction, thereby increasing the pressure on the pressure sensor 7. When the first shaft portion 51 and the second shaft portion 52 are away from each other, the upper arm assembly and the lower arm assembly are shortened in the vertical direction, thereby reducing the pressure on the pressure sensor 7.

[0045] For details, see Figure 2 and Figure 3 As shown, the adjustment rod 6 includes a first thread segment 61 and a second thread segment 62, which are threadedly connected to the first shaft portion 51 and the second shaft portion 52 respectively, and the thread rotation directions of the first thread segment 61 and the second thread segment 62 are opposite.

[0046] See also Figure 2-Figure 4 As shown, since the thread rotation directions of the first thread segment 61 and the second thread segment 62 are opposite, the two segments are threadedly connected to the first shaft portion 51 and the second shaft portion 52 respectively. With this arrangement, when the adjusting rod 6 is rotated in the forward direction, the first shaft portion 51 and the second shaft portion 52 approach each other, and the total vertical length formed by the upper arm assembly and the lower arm assembly increases, thereby increasing the pressure on the pressure sensor 7; when the adjusting rod 6 is rotated in the reverse direction, the first shaft portion 51 and the second shaft portion 52 move away from each other, and the total vertical length formed by the upper arm assembly and the lower arm assembly decreases, thereby reducing the pressure on the pressure sensor 7.

[0047] As an alternative embodiment, see Figure 3 As shown, a handle portion 63 for the user to hold is fixed on the adjusting rod 6.

[0048] The handle portion 63 may be a nut or a blocking piece, which is convenient for hand-held rotation, or the adjustment rod 6 may be rotated by a manual wrench or an electric wrench.

[0049] As an alternative embodiment, see Figure 3 As shown, upper gear parts 30 are fixed to the top ends of the first upper arm 31 and the second upper arm 32, the top seat 2 includes an upper mounting groove 21, the upper gear parts 30 are located in the upper mounting groove 21 and are rotatably connected to the upper mounting groove 21, and the two upper gear parts 30 are meshed with each other.

[0050] The above structure can realize the first upper arm 31 and the second upper arm 32 to always move in meshing relationship, thereby improving the stability of the structure and preventing the upper ends of the first upper arm 31 and the second upper arm 32 from being separated from each other.

[0051] As an alternative embodiment, see Figure 3 As shown, the lower ends of the first lower arm 41 and the second lower arm 42 are fixed with lower gear parts 40, the base 1 includes a lower mounting groove, the lower gear part 40 is located in the lower mounting groove and is rotatably connected to the lower mounting groove, and the two lower gear parts 40 are meshed with each other.

[0052] The above structure can realize the first lower arm 41 and the second lower arm 42 to always move in meshing relationship, thereby improving the stability of the structure and preventing the lower ends of the first lower arm 41 and the second lower arm 42 from being separated from each other.

[0053] As an alternative embodiment, see Figure 2 As shown, the top seat 2 includes a support plate 22 , which is fixed to the top of the upper mounting groove 21 and is used to fix the pressure sensor 7 .

[0054] The support plate 22 is convenient for supporting and fixing the pressure sensor 7, and is convenient for the support plate 22 and the upper beam 200 of the elevator to clamp the pressure sensor 7.

[0055] Embodiment 2:

[0056] This embodiment provides an elevator overload detection device. Figure 5 As shown, it includes a control unit, a display unit and the above-mentioned push rod type force application device, wherein: the control unit is electrically connected to the pressure sensor 7 and the display unit, and is used to convert the signal of the pressure sensor 7 into a digital signal and transmit it to the display unit for display.

[0057] See also Figure 5 As shown, the control unit can be a single chip microcomputer with a pre-stored setting program, the display unit includes a display screen, and the pressure sensor 7 transmits the pressure signal to the control unit, which is used to convert the signal of the pressure sensor 7 into a digital signal and transmit it to the display unit for display. The display unit displays the pressure signal in real time.

[0058] 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 7 reaches the elevator overload setting value, thereby ensuring the accuracy of the elevator overload sensor.

[0059] Or during acceptance, use the elevator overload measuring device to measure whether the overload value set in the elevator installation is accurate.

[0060] As an alternative embodiment, see Figure 5As shown, 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 7 exceeds the set value, so as to remind the operator. The alarm unit can be an audible and visual alarm, etc.

[0061] The elevator overload measuring device can realize rapid measurement without weights, improves measurement efficiency, and saves time and effort.

[0062] As an optional implementation, the elevator overload detection device further includes a shock-absorbing pad 8 , which is fixed between the lower beam bracket 300 and the bottom of the car 100 .

[0063] See also Figure 1 As shown, the elevator includes an upper beam 200, a vertical beam 400 and a lower beam bracket 300. A shock-absorbing pad 8 is arranged on the lower beam bracket 300, and the shock-absorbing pad 8 supports the bottom of the car 100. The nut is screwed to make the top of the car 100 and the upper beam 200 receive a supporting force to compress the shock-absorbing pad 8 of the bottom of the car. When the force reaches the elevator overload setting value, the original elevator overload signal is adjusted to make it send out an overload alarm. The shock-absorbing pad 8 can buffer the force on the bottom of the car 100 to ensure the safety of the elevator.

[0064] 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.

[0065] 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.

[0066] 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 telescopic arm force applying device, characterized in that: It includes a base, a lower arm assembly, an upper arm assembly, a top seat and an adjustment rod, wherein: The base is supported at the bottom of the car, the lower end of the lower arm assembly is rotatably connected to the base, and is rotatably connected to the upper arm assembly through a shaft, the upper end of the upper arm assembly is rotatably connected to the top seat, and the top seat cooperates with the elevator upper beam to clamp the pressure sensor; The adjusting rod is threadedly connected to the shaft portion. By turning the adjusting rod, the upper arm assembly and the lower arm assembly can be driven to extend or shorten in the vertical direction, thereby increasing or decreasing the pressure on the pressure sensor.

2. The telescopic arm force applying device according to claim 1, characterized in that: The upper arm assembly includes a first upper arm and a second upper arm both rotatably connected to the top seat, the lower arm assembly includes a first lower arm and a second lower arm both rotatably connected to the base, and the shaft portion includes a first shaft portion and a second shaft portion, wherein: The first upper arm is rotatably connected to the first lower arm via the first shaft portion, and the second upper arm is rotatably connected to the second lower arm via the second shaft portion; The adjusting rod assembly is threadedly connected to the first shaft portion and the second shaft portion, and twisting the adjusting rod can drive the first shaft portion and the second shaft portion to move closer to or farther from each other.

3. The telescopic arm force applying device according to claim 2, characterized in that: The adjusting rod comprises a first thread segment and a second thread segment, the first thread segment and the second thread segment are threadedly connected to the first shaft portion and the second shaft portion respectively, and the thread rotation directions of the first thread segment and the second thread segment are opposite.

4. The telescopic arm force applying device according to claim 3, characterized in that: A handle portion for a user to hold is fixed on the adjusting rod.

5. The telescopic arm force applying device according to claim 2, characterized in that: An upper gear part is fixed to the top of the first upper arm and the second upper arm, the top seat includes an upper mounting groove, the upper gear part is located in the upper mounting groove and is rotatably connected to the upper mounting groove, and the two upper gear parts are meshed with each other.

6. The telescopic arm force applying device according to claim 2, characterized in that: A lower gear portion is fixed to the lower ends of the first lower arm and the second lower arm, the base comprises a lower mounting groove, the lower gear portion is located in the lower mounting groove and is rotatably connected to the lower mounting groove, and the two lower gear portions are meshed with each other.

7. The telescopic arm force applying device according to claim 5, characterized in that: The top seat includes a support plate, which is fixed to the top of the upper mounting groove and is used to fix the pressure sensor.

8. An elevator overload detection device, characterized in that: The device comprises a control unit, a display unit and a telescopic arm force applying device according to any one of claims 1 to 7, 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.

9. The elevator overload detection device according to claim 8, characterized in that: The elevator overload detection 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.

10. The elevator overload detection device according to claim 8, characterized in that: The elevator overload detection device also includes a shock-absorbing pad, which is fixed between the lower beam bracket and the bottom of the car.

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