CN219509997U - Emergency stay wire control mechanism and scissor type aerial work platform - Google Patents
Emergency stay wire control mechanism and scissor type aerial work platform Download PDFInfo
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- CN219509997U CN219509997U CN202222598256.XU CN202222598256U CN219509997U CN 219509997 U CN219509997 U CN 219509997U CN 202222598256 U CN202222598256 U CN 202222598256U CN 219509997 U CN219509997 U CN 219509997U
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Abstract
The utility model belongs to the technical field of emergency control systems and provides an emergency stay wire control mechanism and a scissor type aerial work platform. The tensioning assembly forming the labor-saving lever is used for tensioning and controlling the emergency stay wire, so that the emergency stay wire can be pulled by using small force, and the using hand feeling is increased.
Description
Technical Field
The utility model belongs to the technical field of emergency control systems, and particularly relates to an emergency stay wire control mechanism and a scissor type aerial work platform.
Background
Many engineering machines can be provided with emergency control devices to ensure that the equipment can be reset in a mechanical mode after the equipment loses power, taking a scissor type aerial work platform as an example, a scissor arm of the scissor type aerial work platform is pushed by a lifting driving device to lift and descend, wherein the situation that the scissor type aerial work platform loses power suddenly can occur when working, in order to enable operators on the working platform to safely return to the ground when the lifting driving device loses power, the lifting driving device is generally provided with the emergency control devices, and the emergency control devices are controlled in a plurality of modes, including an emergency stay wire type control mode, by pulling an emergency stay wire, the manual emergency control device can be linked to act, and the scissor arm slowly descends. However, such emergency pull-cord emergency control devices require a large force to be applied to the emergency pull-cord during use, resulting in poor physical examination.
Disclosure of Invention
Aiming at the defects or shortcomings, the utility model provides an emergency stay wire control mechanism and a scissor type aerial work platform, and aims to solve the technical problem that the use experience is poor because a large force needs to be applied to an emergency stay wire when the conventional emergency stay wire emergency control device is used.
In order to achieve the above purpose, the utility model provides an emergency stay wire control mechanism, which comprises a tensioning assembly, wherein the tensioning assembly comprises a base, a pressing hand and a tensioning piece, the pressing hand is pivoted on the base through a pivot shaft, one end of the pressing hand is a control end for controlling the rotation of the pressing hand, the pressing hand is provided with a connecting part, one end of the tensioning piece is connected with the connecting part, the other end of the tensioning piece is connected with an emergency stay wire, the tensioning piece can tension the emergency stay wire through rotating the pressing hand, and the length of a first force arm from the connecting part to the pivot shaft is smaller than that of a second force arm from the control end to the pivot shaft.
In an embodiment of the utility model, the press handle is rotatable to a dead point position in which the extension direction of the first force arm coincides with the tightening direction of the pull wire.
In an embodiment of the utility model, one end of the pressing hand is a pivoting connection end for connection with the base, the other end is a control end, and the connection part is arranged between the pivoting connection end and the control end.
In the embodiment of the utility model, the connecting part is provided with a bolt hole for the connecting pin to pass through, the tensioning piece is a pull rod, and the pull rod is rotationally connected to the connecting part through the connecting pin.
In the embodiment of the utility model, the connecting pin is arranged in the bolt hole, the end part of the connecting pin extends out of the bolt hole, a second mounting hole is arranged at the part of the connecting pin extending out of the bolt hole, and the pull rod is connected with the connecting pin in a penetrating way through the second mounting hole and is fixedly connected with the connecting pin through a fastener.
In the embodiment of the utility model, the pull rod is a threaded rod, the fastening piece is two fastening bolts, the pull rod is connected to the second mounting hole in a penetrating way, and the two fastening bolts are sleeved on the pull rod and respectively abutted with two sides of the connecting pin.
In the embodiment of the utility model, the two ends of the connecting pin extend out of the bolt hole and are respectively provided with a second mounting hole, the pull rod is a U-shaped rod, the tensioning end of the emergency pull wire is provided with a pull ring, and the pull rod penetrates through the pull ring and is respectively in butt joint with the second mounting holes at the two ends of the connecting pin.
In order to achieve the above purpose, the utility model also provides a scissor type aerial work platform, wherein the scissor type aerial work platform comprises an emergency control mechanism and an emergency stay wire control mechanism according to the above, the emergency stay wire is arranged on the emergency control mechanism, and the emergency stay wire is connected with a tensioning piece.
In the embodiment of the utility model, the scissor type aerial work platform further comprises a driving mechanism, wherein the driving mechanism is a hydraulic driving mechanism, the emergency control mechanism is a control valve for controlling the hydraulic driving mechanism, the emergency stay wire is connected with the control valve, or the driving mechanism is a motor driving mechanism, the emergency control mechanism is an emergency brake, a brake pull rod is arranged on the emergency brake, and the emergency stay wire is connected with the brake pull rod.
In an embodiment of the utility model, a scissor aerial platform includes a chassis on which a base is mounted.
Through the technical scheme, the emergency stay wire control mechanism provided by the embodiment of the utility model has the following beneficial effects:
the utility model provides an emergency stay wire control mechanism, which comprises a tensioning assembly used for tensioning an emergency stay wire, wherein the tensioning assembly comprises a base, a pressing hand and a tensioning piece, one end of the pressing hand is pivoted on the base, the other end of the pressing hand is a control end, meanwhile, the pressing hand is provided with a connecting part, one end of the tensioning piece is fixed on the connecting part, the other end of the pressing hand is connected with the emergency stay wire, when the pressing hand rotates, the connecting part drives the tensioning piece to move so as to pull the emergency stay wire, meanwhile, the length of a first force arm from the connecting part to a pivoting shaft is smaller than that of a second force arm from the control end to the pivoting shaft, namely, the whole tensioning assembly forms a labor-saving lever, so that the emergency stay wire can be tensioned by using smaller force at the control end, and meanwhile, the tensioning assembly in a lever mode can reduce the acting force of the pressing hand, and has higher reliability and longer service life compared with the existing stay wire handle mode. In summary, the tensioning assembly forming the labor-saving lever is used for tensioning and controlling the emergency stay wire, so that the emergency stay wire can be pulled by using small force, and the using hand feeling is increased.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide an understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:
FIG. 1 is a schematic overall construction of an emergency cord control mechanism in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic elevational view of an emergency cord control mechanism in accordance with an embodiment of the present utility model;
FIG. 3 is a schematic view of an emergency stay wire control mechanism according to an embodiment of the present utility model installed on a scissor type aerial work platform;
fig. 4 is a partially enlarged structural view of a in fig. 3 according to an embodiment of the present utility model.
Description of the reference numerals
1. Tensioning assembly 11 base
12. Control end of pressing hand 121
122. The connecting portion 123 pivotally connects the ends
13. Tensioning member 14 connecting pin
15. Emergency stay wire for fastener 2
21. Pivot shaft of pull ring 31
32. First force arm 33 second force arm
41. Chassis 42 scissor arm
Detailed Description
Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present utility model.
The emergency wire control mechanism of the present utility model is described below with reference to the accompanying drawings.
The utility model provides an emergency stay wire control mechanism, as shown in fig. 1 and 2, wherein the emergency stay wire control mechanism comprises:
the tensioning assembly 1, the tensioning assembly 1 comprises a base 11, a press handle 12 and a tensioning piece 13, the press handle 12 is pivoted on the base 11 through a pivot shaft 31, one end of the tensioning piece 12 is a control end 121 for controlling the press handle 12 to rotate, a connecting portion 122 is arranged on the press handle 12, one end of the tensioning piece 13 is connected with the connecting portion 122, the other end of the tensioning piece 13 is connected with the emergency stay wire 2, the tensioning piece 13 can tension the emergency stay wire 2 through rotating the press handle 12, and the length from the connecting portion 122 to a first force arm 32 of the pivot shaft 31 is smaller than the length from the control end 121 to a second force arm 33 of the pivot shaft 31.
The utility model provides an emergency stay wire control mechanism, which comprises a tension component 1 for tensioning an emergency stay wire 2, wherein the tension component 1 comprises a base 11, a press hand 12 and a tension member 13, one end of the press hand 12 is pivoted on the base 11, the other end of the press hand is a control end 121, meanwhile, the press hand 12 is provided with a connecting part 122, one end of the tension member 13 is fixed on the connecting part 122, the other end of the tension member is connected with the emergency stay wire 2, when the press hand 12 rotates, the connecting part 122 drives the tension member 13 to move so as to pull the emergency stay wire 2, meanwhile, the length from the connecting part 122 to a first force arm 32 of a pivot shaft 31 is smaller than the length from the control end 121 to a second force arm 33 of the pivot shaft 31, namely, the whole tension component 1 forms a labor-saving lever, so that the emergency stay wire 2 can be tensioned by using smaller force at the control end 121, and meanwhile, the tension component 1 in a lever form can reduce the acting force of the press hand 12, and compared with the existing stay wire handle form, the tension component has higher reliability and longer service life. In summary, the emergency stay wire 2 is tensioned and controlled by the tensioning assembly 1 forming the labor-saving lever, so that the emergency stay wire 2 can be pulled by using smaller force, and the using hand feeling is increased.
It should be noted that, the emergency control mechanism is connected to one end of the emergency stay wire 2, the other end is connected to the tension member 13, and the emergency stay wire 2 is pulled by the tension member 13, so that the emergency control mechanism can be controlled, the manner of driving the pressing hand 12 to rotate can be multiple, the control end 121 can be directly pressed and pushed manually, and the pressing hand can also be used as an intermediate force transmission component through a push rod and the like.
As shown in fig. 1 and 2, in an embodiment of the present utility model, the press handle 12 is rotatable to a dead point position in which the direction of extension of the first force arm 32 coincides with the tightening direction of the wire. In the process of pulling the emergency pull wire 2, the control end 121 is pushed to enable the pressing hand 12 to rotate to the dead point position, at the moment, the extending direction of the first force arm 32 coincides with the tensioning direction of the pull wire, the pressing hand 12 can be self-locked at the position, at the moment, the tensioning piece 13 can keep pulling force on the emergency pull wire 2 without manual operation, and therefore labor intensity of operators can be reduced.
As shown in fig. 1 and 2, in the embodiment of the present utility model, one end of the pressing hand 12 is a pivot connection end 123 for connection with the base 11, the other end is a control end 121, and the connection portion 122 is disposed between the pivot connection end 123 and the control end 121. Specifically, the pivot connection end 123 and the base 11 are respectively provided with a pivot hole, and the pivot shaft 31 passes through the pivot connection end 123 and the pivot holes on the base 11, so that the pivot connection of the press hand 12 is realized, and meanwhile, since the connection part 122 is arranged between the pivot connection end 123 and the control end 121, when the press hand 12 rotates, the movement direction of the control end 121 and the movement direction of the tensioning member 13 can be the same, the control of the tensioning assembly 1 is facilitated, and the length from the connection part 122 to the first force arm 32 of the pivot shaft 31 can be ensured to be smaller than the length from the control end 121 to the second force arm 33 of the pivot shaft 31, so that a labor-saving lever is formed. Of course, the middle part of the pressing hand 12 may be connected to the base 11, and the pressing hand 12 may have a seesaw shape, so that the same technical effects can be achieved.
As shown in fig. 1 and 2, in the embodiment of the present utility model, the connection portion 122 is provided with a bolt hole through which the connection pin 14 passes, and the tightening member 13 is a pull rod, which is rotatably connected to the connection portion 122 through the connection pin 14. Specifically, in the process of rotating the pressing hand 12, the pulling rod is driven to rotate together, one end of the pulling rod is connected with the emergency pull wire 2, and by rotating and connecting the pulling rod on the connecting portion 122, the extending direction of the pulling rod can be guaranteed to be always parallel to the tensioning direction of the emergency pull wire 2 in the process of rotating the pressing hand 12, namely, the force of the pressing hand 12 to the tensioning piece 13 is all used for pulling the emergency pull wire 2, so that the loss of additional component force is avoided. The pull rod may be rotatably connected to the connection portion 122 by other means, such as a ball bearing.
As shown in fig. 1 and 2, in the embodiment of the present utility model, the connection pin 14 is installed in the bolt hole and the end portion thereof protrudes from the bolt hole, the portion of the connection pin 14 protruding from the bolt hole is provided with a second installation hole, and the tie rod is coupled to the second installation hole and is coupled and fixed to the connection pin 14 by the fastener 15. That is, the tie rod and the connecting pin 14 are detachably connected, and the assembly of the tightening assembly 1 can be facilitated by the detachable connection, so that various manners of realizing the detachable connection can be realized by the locking pin, the threaded connection member, etc. besides the above-mentioned scheme.
As shown in fig. 1 and 2, in the embodiment of the present utility model, the pull rod may be a threaded rod, the fastener 15 is two fastening bolts, and the pull rod is connected to the second mounting hole in a penetrating manner, and the two fastening bolts are sleeved on the pull rod and respectively abut against two sides of the connecting pin 14. Specifically, one end of the pull rod is a threaded end, when the assembly 1 is tensioned, a fastening bolt is sleeved on the threaded end, then the threaded end penetrates into a second mounting hole on the connecting pin 14, the sleeved fastening bolt is abutted with one side of the connecting pin 14, and then another fastening bolt is sleeved on the threaded end so as to be abutted with the other side of the connecting pin 14, namely, the pull rod and the connecting pin 14 are relatively fixed through the two fastening bolts.
As shown in fig. 1 and 2, in the embodiment of the present utility model, both ends of the connection pin 14 extend out of the bolt hole and are respectively provided with a second mounting hole, the pull rod is a U-shaped rod, the tension end of the emergency pull wire 2 is provided with a pull ring 21, and the pull rod passes through the pull ring 21 and both ends are respectively abutted with the second mounting holes at both ends of the connection pin 14. Through the second mounting holes at the two ends of the U-shaped rod and the two ends of the connecting pin 14 respectively and correspondingly connected, the two ends of the connecting pin 14 can be uniformly stressed, the two ends of the connecting pin 14 can be locked, the connecting pin 14 is prevented from falling off from the bolt hole, and meanwhile, the connection of the pull ring 21 is facilitated through the U-shaped rod. Of course, the shape of the tensioning member 13 may be other, and may be specifically set according to the structure on the tensioning end of the emergency wire 2, and the emergency wire 2 may be directly tied to the U-shaped rod.
In order to achieve the above objective, the present utility model further provides a scissor aerial work platform, wherein the scissor aerial work platform includes an emergency control mechanism and an emergency stay wire control mechanism according to the above, and the scissor aerial work platform uses all the technical solutions of the above embodiments, so that the scissor aerial work platform has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail herein. Specifically, an emergency stay wire 2 is arranged on an emergency control mechanism of the scissor type aerial work platform, the emergency stay wire 2 is connected with the emergency stay wire control mechanism, and control of the emergency control mechanism can be achieved by pulling the emergency stay wire 2.
In the embodiment of the utility model, the scissor type aerial work platform further comprises a driving mechanism, wherein the driving mechanism is a hydraulic driving mechanism, the emergency control mechanism is a control valve for controlling the hydraulic driving mechanism, the emergency stay wire 2 is connected with the control valve, or the driving mechanism is a motor driving mechanism, the emergency control mechanism is an emergency brake, a brake pull rod is arranged on the emergency brake, and the emergency stay wire 2 is connected with the brake pull rod. Specifically, the driving mechanism of the scissor type aerial work platform can be hydraulically driven and also can be motor driven, when the driving mechanism is hydraulically driven, if the hydraulic driving mechanism loses power, the control valve can be opened to control oil of the hydraulic cylinder to flow out, so that the hydraulic driving mechanism moves, the emergency stay wire 2 is connected with the control valve, the emergency stay wire 2 is pulled, and then the control valve is controlled to be opened and closed, and likewise, when the driving mechanism is motor driven, the motor is powered off, the emergency brake is locked, and the emergency brake is pulled by the emergency stay wire 2, so that the brake is released. Whether the emergency stay wire 2 is connected with an emergency brake or a control valve, a larger force is needed to pull the emergency stay wire 2 to control the emergency control mechanism to act, and the emergency stay wire control mechanism pulls the emergency stay wire 2 in a labor-saving lever mode, so that the emergency stay wire control mechanism is easier to use and better in hand feel.
As shown in fig. 3 and 4, in the embodiment of the present utility model, the scissor type aerial work platform includes a chassis 41, and the base 11 is mounted on the chassis 41. And preferably, the base 11 is located outside the peripheral wall of the chassis 41 for easy operation. The following is a specific description of the position relationship of the emergency wire control mechanism and the control process of the emergency wire 2 in combination with the scissor type aerial work platform:
as shown in fig. 3 and 4, the base 11 of the emergency wire pulling control mechanism is fixed on the outer side of the peripheral wall of the chassis 41, the pressing hand 12 is pivoted on the base 11 through a pivot shaft 31, a connecting part 122 in the middle of the pressing hand 12 is provided with a bolt hole, and the pull rod is fixedly connected with the connecting part 122 through a connecting pin 14. During normal operation, the emergency stay wire 2 is in a relaxed state, no acting force or small acting force exists between the tensioning piece 13 and the emergency stay wire 2, when the electric quantity of the driving mechanism is insufficient or an electric control system fails, the driving mechanism can be self-locked, if the scissor arms 42 are in a lifting state, the emergency control mechanism is required to be manually controlled to control the driving mechanism so as to fold the scissor arms 42 in the lifting state, in the stay wire type emergency control mechanism, the emergency stay wire 2 is pulled through the tensioning assembly 1, the action of the emergency control mechanism can be controlled, and then the driving mechanism is released, and at the moment, the scissor arms 42 can slowly descend under the driving of dead weight. The base 11 of the emergency wire pulling control mechanism is fixed on the outer side of the peripheral wall of the chassis 41, so that an operator can conveniently break the pressing hand 12 to control the emergency wire pulling control mechanism.
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (10)
1. An emergency stay wire control mechanism, characterized in that the emergency stay wire control mechanism comprises:
the tensioning assembly (1) comprises a base (11), a pressing hand (12) and a tensioning piece (13), wherein the pressing hand (12) is pivoted on the base (11) through a pivot shaft (31), one end of the pressing hand is a control end (121) for controlling the pressing hand (12) to rotate, a connecting part (122) is arranged on the pressing hand (12), one end of the tensioning piece (13) is connected with the connecting part (122), the other end of the tensioning piece is connected with an emergency pull wire (2), and the tensioning piece (13) can tension the emergency pull wire (2) by rotating the pressing hand (12);
wherein the length of the first force arm (32) of the connection (122) to the pivot shaft (31) is smaller than the length of the second force arm (33) of the control end (121) to the pivot shaft (31).
2. Emergency wire control mechanism according to claim 1, characterized in that the press handle (12) is rotatable to a dead point position in which the extension direction of the first force arm (32) coincides with the tightening direction of the emergency wire (2).
3. The emergency wire pulling control mechanism according to claim 1, wherein one end of the pressing hand (12) is a pivot connection end (123) for being connected with the base (11), the other end is the control end (121), and the connection part (122) is located between the pivot connection end (123) and the control end (121).
4. An emergency stay wire control mechanism according to claim 3, characterized in that the connecting part (122) is provided with a bolt hole for the connecting pin (14) to pass through, the tightening piece (13) is a pull rod, and the pull rod is rotatably connected to the connecting part (122) through the connecting pin (14).
5. The emergency wire pulling control mechanism according to claim 4, wherein the connecting pin (14) is installed in the bolt hole and the end part of the connecting pin extends out of the bolt hole, a second installation hole is arranged on the part of the connecting pin (14) extending out of the bolt hole, and the pulling rod is connected with the second installation hole in a penetrating manner and is connected and fixed with the connecting pin (14) through a fastener (15).
6. The emergency stay wire control mechanism according to claim 5, wherein the pull rod is a threaded rod, the fastening piece (15) is two fastening bolts, the pull rod is connected to the second mounting hole in a penetrating manner, and the two fastening bolts are sleeved on the pull rod and respectively abutted to two sides of the connecting pin (14).
7. The emergency stay wire control mechanism according to claim 5, wherein both ends of the connecting pin (14) extend out of the pin hole and are respectively provided with the second mounting holes, the pull rod is a U-shaped rod, a pull ring (21) is arranged on a tensioning end of the emergency stay wire (2), and the pull rod passes through the pull ring (21) and both ends are respectively butted with the second mounting holes at both ends of the connecting pin (14).
8. A scissor aerial work platform, characterized by comprising an emergency control mechanism and an emergency stay wire control mechanism according to any one of claims 1 to 7, wherein an emergency stay wire (2) is arranged on the emergency control mechanism, and the emergency stay wire (2) is connected with a tensioning piece (13).
9. The scissor aerial work platform of claim 8, further comprising a drive mechanism, the drive mechanism being a hydraulic drive mechanism, the emergency control mechanism being a control valve controlling the hydraulic drive mechanism, the emergency stay wire (2) being connected to the control valve; or (b)
The driving mechanism is a motor driving mechanism, the emergency control mechanism is an emergency brake, a brake pull rod is arranged on the emergency brake, and the emergency pull wire (2) is connected with the brake pull rod.
10. Scissor aerial work platform according to claim 9, characterized in that it comprises a chassis (41), said base (11) being mounted on said chassis (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222598256.XU CN219509997U (en) | 2022-09-29 | 2022-09-29 | Emergency stay wire control mechanism and scissor type aerial work platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222598256.XU CN219509997U (en) | 2022-09-29 | 2022-09-29 | Emergency stay wire control mechanism and scissor type aerial work platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219509997U true CN219509997U (en) | 2023-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222598256.XU Active CN219509997U (en) | 2022-09-29 | 2022-09-29 | Emergency stay wire control mechanism and scissor type aerial work platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219509997U (en) |
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2022
- 2022-09-29 CN CN202222598256.XU patent/CN219509997U/en active Active
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