CN210795657U - Forklift armrest and forklift - Google Patents
Forklift armrest and forklift Download PDFInfo
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- CN210795657U CN210795657U CN201920856416.1U CN201920856416U CN210795657U CN 210795657 U CN210795657 U CN 210795657U CN 201920856416 U CN201920856416 U CN 201920856416U CN 210795657 U CN210795657 U CN 210795657U
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- electromagnet
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- forklift
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- locking
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Abstract
The utility model belongs to the technical field of fork truck's automobile body annex, especially, relate to a fork truck handrail and fork truck, this fork truck handrail include handrail board, first rocking arm, second rocking arm, first locking mechanism, second locking mechanism, third locking mechanism and support, the support is fixed on fork truck's automobile body, the first end of first rocking arm with handrail board is articulated in first articulated position, the second end of first rocking arm with the first end of second rocking arm is articulated in second articulated position, the second end of second rocking arm with the support is articulated in third articulated position. The utility model provides a fork truck handrail removes first locking mechanical system, second locking mechanical system and third locking mechanical system, and handrail board and first rocking arm can rotate relatively, first rocking arm can rotate relatively with the second rocking arm, the second rocking arm can rotate relatively with the support, and at this moment, rotate that handrail board can be disposable and adjust handrail board to the most comfortable position. The adjustment is convenient, and the angle adjustment range is large.
Description
Technical Field
The utility model belongs to the technical field of fork truck's automobile body annex, especially, relate to a fork truck handrail and fork truck.
Background
An existing electric fork-lift truck adjusts handrail, includes: the device comprises a bottom plate fixed in a cab, an outer barrel fixed on the bottom plate, an inner barrel inserted in the outer barrel in a sliding mode, a locking mechanism I used for locking the inner barrel and the outer barrel, an ear seat rotatably installed at the upper end of the inner barrel in the front-back direction, a locking mechanism II used for locking the ear seat and the inner barrel, a guide rail installed on the ear seat and a sliding seat installed on the guide rail in the front-back direction in a sliding mode. The insertion depth of the inner cylinder in the outer cylinder is adjusted, so that the height of the handrail can be conveniently adjusted. When the pitching angle of the handrail needs to be adjusted, the rotation angle of the ear seat relative to the inner cylinder can be adjusted by loosening the locking mechanism II. When the position of the handrail needs to be adjusted forwards and backwards, the locking mechanism III is loosened, and the sliding seat is adjusted in a sliding mode along the front and back positions of the guide rail, so that the front and back positions of the handrail are adjusted, and the locking mechanism III is locked after the handrail is adjusted in place.
Above-mentioned electric fork-lift adjusts handrail control range is limited, and three independent regulation and locking mechanical system lead to the handrail structure too complicated. In addition, the above-mentioned electric fork-lift truck adjusts the regulation mode of locking after adjusting the handrail, is difficult to adjust the handrail to the most comfortable position fast.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: adjust handrail to current electric fork-lift and adopt three independent regulation and locking mechanism, be difficult to adjust the problem of the most comfortable position with the handrail fast, provide a fork truck handrail and fork truck.
In order to solve the technical problem, in one aspect, an embodiment of the present invention provides a forklift armrest, including a handrail plate, a first rotating arm, a second rotating arm, a first locking mechanism, a second locking mechanism, a third locking mechanism, and a bracket, where the bracket is fixed on a body of a forklift, a first end of the first rotating arm is hinged to the handrail plate at a first hinge position, a second end of the first rotating arm is hinged to a first end of the second rotating arm at a second hinge position, and a second end of the second rotating arm is hinged to the bracket at a third hinge position;
the first locking mechanism is arranged at the first hinged position and used for locking the relative rotation of the armrest plate and the first rotating arm;
the second locking mechanism is arranged at the second hinge position and used for locking the relative rotation of the first rotating arm and the second rotating arm;
the third locking mechanism is arranged at the third hinged position and used for locking the relative rotation of the second rotating arm and the bracket.
Optionally, the support is fixed on or beside a seat of a forklift.
Optionally, the first locking mechanism includes a first friction plate and a first electromagnet, a first friction surface is disposed at a first end of the first rotating arm or on the armrest plate, and the first electromagnet drives the first friction plate to be attached to or detached from the first friction surface; when the first electromagnet is not electrified, the first friction plate is tightly attached to the first friction surface; when the first electromagnet is electrified, the first friction plate is separated from the first friction surface;
the second locking mechanism comprises a second friction plate and a second electromagnet, a second friction surface is arranged at the second end of the first rotating arm or the first end of the second rotating arm, and the second electromagnet drives the second friction plate to be attached to or separated from the second friction surface; when the second electromagnet is not electrified, the second friction plate is tightly attached to the second friction surface; when the second electromagnet is electrified, the second friction plate is separated from the second friction surface;
the third locking mechanism comprises a third friction plate and a third electromagnet, a third friction surface is arranged at the second end of the second rotating arm or on the bracket, and the third electromagnet drives the third friction plate to be attached to or separated from the third friction surface; when the third electromagnet is not electrified, the third friction plate is tightly attached to the third friction surface; when the third electromagnet is electrified, the third friction plate is separated from the third friction surface.
Optionally, a first end of the first rotating arm is provided with a first mounting cavity, the first electromagnet is arranged in the first mounting cavity, and the first friction surface is formed on one side surface of the handrail plate facing the first mounting cavity;
the first electromagnet comprises a first coil, a first spring and a first iron core, the first coil is fixed in the first installation cavity, the first iron core is inserted in the first coil, one end of the first spring is abutted to the wall of the first installation cavity, the other end of the first spring is abutted to one end of the first iron core, and the first friction plate is fixed to the other end of the first iron core.
Optionally, a second mounting cavity is arranged at the first end of the second rotating arm, the second electromagnet is arranged in the second mounting cavity, and the second friction surface is formed on one side surface of the second end of the first rotating arm, which faces the second mounting cavity;
the second electromagnet comprises a second coil, a second spring and a second iron core, the second coil is fixed in the second installation cavity, the second iron core is inserted in the second coil in a penetrating mode, one end of the second spring abuts against the wall of the second installation cavity, the other end of the second spring abuts against one end of the second iron core, and the second friction plate is fixed at the other end of the second iron core.
Optionally, a third mounting cavity is formed at the second end of the second rotating arm, the third electromagnet is arranged in the third mounting cavity, and the third friction surface is formed on one side surface of the bracket facing the third mounting cavity;
the third electromagnet comprises a third coil, a third spring and a third iron core, the third coil is fixed in the third installation cavity, the third iron core is inserted into the third coil, one end of the third spring is abutted against the cavity wall of the third installation cavity, the other end of the third spring is abutted against one end of the third iron core, and the third friction plate is fixed at the other end of the third iron core.
Optionally, a handheld groove is arranged on the armrest plate.
Optionally, the first locking mechanism, the second locking mechanism and the third locking mechanism are locked and unlocked synchronously.
Optionally, a button in communication connection with a controller on the forklift is arranged on the armrest plate, the first electromagnet, the second electromagnet and the third electromagnet are in communication connection with the controller on the forklift, and the first electromagnet, the second electromagnet and the third electromagnet are electrically connected with a power supply on the forklift;
the button is pressed, and the first electromagnet, the second electromagnet and the third electromagnet are electrified simultaneously to release the locking of the armrest plate and the first rotating arm, the locking of the first rotating arm and the second rotating arm and the locking of the second rotating arm and the bracket;
and when the button is released, the first electromagnet, the second electromagnet and the third electromagnet are powered off simultaneously, so that the locking of the armrest plate and the first rotating arm, the locking of the first rotating arm and the second rotating arm and the locking of the second rotating arm and the support are realized.
The embodiment of the utility model provides a fork truck handrail removes first locking mechanism, second locking mechanism and third locking mechanism, and handrail board and first rocking arm can rotate relatively, first rocking arm and second rocking arm can rotate relatively, second rocking arm and support can rotate relatively, and at this moment, rotate that handrail board can be disposable and adjust handrail board to the most comfortable position. The adjustment is convenient, and the angle adjustment range is large.
On the other hand, the embodiment of the utility model provides a still provide a fork truck, it includes foretell fork truck handrail.
Drawings
Fig. 1 is a schematic view of a forklift armrest according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating a locked state of the forklift armrest according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating an unlocked state of a forklift armrest according to an embodiment of the present invention;
fig. 4 is a schematic view of a first locking mechanism of a forklift armrest according to an embodiment of the present invention;
fig. 5 is a schematic view of a second locking mechanism of a forklift armrest according to an embodiment of the present invention;
fig. 6 is a schematic view of a third locking mechanism of a forklift armrest according to an embodiment of the present invention;
fig. 7 is a schematic view of an armrest plate of a forklift armrest according to an embodiment of the present invention;
fig. 8 is a schematic view of an adjustable range of a forklift armrest according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
1. a handrail plate; 11. a first friction face; 12. a hand-held recess; 2. a first rotating arm; 21. a first mounting cavity; 22. a second friction face; 3. a second rotating arm; 31. a second mounting cavity; 32. a third mounting cavity; 4. a first locking mechanism; 41. a first friction plate; 42. a first electromagnet; 421. a first coil; 422. a first spring; 423. a first iron core; 5. a second locking mechanism; 51. a second friction plate; 52. a second electromagnet; 521. a second coil; 522. a second spring; 523. a second iron core; 6. a third locking mechanism; 61. a third friction plate; 62. a third electromagnet; 621. a third coil; 622. a third spring; 623. a third iron core; 7. a support; 71. a third friction surface; 8. a button.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 7, an embodiment of the present invention provides a forklift armrest, including a armrest panel 1, a first rotating arm 2, a second rotating arm 3, a first locking mechanism 4, a second locking mechanism 5, a third locking mechanism 6, and a support 7, the support 7 is fixed on a body of a forklift, a first end of the first rotating arm 2 is hinged to the armrest panel 1 at a first hinge position, a second end of the first rotating arm 2 is hinged to a first end of the second rotating arm 3 at a second hinge position, and a second end of the second rotating arm 3 is hinged to the support 7 at a third hinge position.
The first locking mechanism 4 is arranged at the first hinged position and used for locking the relative rotation of the handrail plate 1 and the first rotating arm 2. That is, when the first locking mechanism 4 is locked, the armrest plate 1 and the first rotating arm 2 are relatively fixed; when the first locking mechanism 4 is unlocked, the armrest plate 1 and the first rotating arm 2 can rotate relatively.
The second locking mechanism 5 is disposed at the second hinge position for locking the relative rotation of the first swivel arm 2 and the second swivel arm 3. That is, when the second locking mechanism 5 is locked, the first rotating arm 2 and the second rotating arm 3 are fixed relative to each other; when the second locking mechanism 5 is unlocked, the first rotating arm 2 and the second rotating arm 3 can rotate relatively.
The third locking mechanism 6 is arranged at the third hinge position and used for locking the relative rotation of the second rotating arm 3 and the bracket 7. That is, when the third locking mechanism 6 is locked, the second rotating arm 3 and the bracket 7 are fixed relatively; when the third locking mechanism 6 is unlocked, the second rotating arm 3 and the bracket 7 can rotate relatively.
The first locking mechanism 4, the second locking mechanism 5 and the third locking mechanism 6 are locked and unlocked synchronously.
The support 7 can be fixed on or beside the seat of the forklift.
In one embodiment, the armrest plate 1, the first rotating arm 2 and the second rotating arm 3 are made of plastic, so that the weight of the armrest of the forklift is reduced as much as possible, and the armrest is convenient to adjust.
In one embodiment, as shown in fig. 4, the first locking mechanism 4 includes a first friction plate 41 and a first electromagnet 42, the first end of the first rotating arm 2 is provided with a first mounting cavity 21, the first electromagnet 42 is arranged in the first mounting cavity 21, and a first friction surface 11 is formed on a side surface of the armrest plate 1 facing the first mounting cavity 21. The first electromagnet 42 drives the first friction plate 41 to be in close contact with or separated from the first friction surface 11. Specifically, when the first electromagnet 42 is not energized, the first friction plate 41 is in close contact with the first friction surface 11; when the first electromagnet 41 is energized, the first friction plate 41 is separated from the first friction surface 11.
In an embodiment, the first electromagnet 42 includes a first coil 421, a first spring 422, and a first iron core 423, the first coil 421 is fixed in the first installation cavity 21, the first iron core 423 is inserted into the first coil 421, one end of the first spring 422 abuts against a cavity wall of the first installation cavity 21, the other end of the first spring 422 abuts against one end of the first iron core 423, and the first friction plate 41 is fixed to the other end of the first iron core 423.
In one embodiment, as shown in fig. 5, the second locking mechanism 5 includes a second friction plate 51 and a second electromagnet 52, the first end of the second rotating arm 3 is provided with a second mounting cavity 31, the second electromagnet 52 is arranged in the second mounting cavity 31, and a second friction surface 22 is formed on a side surface of the second end of the first rotating arm 2 facing the second mounting cavity 31. The second electromagnet 52 drives the second friction plate 51 to be attached to or detached from the second friction surface 22. Specifically, when the second electromagnet 52 is not energized, the second friction plate 51 is in close contact with the second friction surface 22; when the second electromagnet 52 is energized, the second friction plate 51 is separated from the second friction surface 22.
In an embodiment, the second electromagnet 52 includes a second coil 521, a second spring 522 and a second iron core 523, the second coil 521 is fixed in the second installation cavity 31, the second iron core 523 is inserted into the second coil 521, one end of the second spring 522 abuts against a cavity wall of the second installation cavity 31, the other end of the second spring 522 abuts against one end of the second iron core 523, and the second friction plate 51 is fixed at the other end of the second iron core 523.
In one embodiment, as shown in fig. 6, the third locking mechanism 6 includes a third friction plate 61 and a third electromagnet 62, the second end of the second rotating arm 3 is provided with a third mounting cavity 32, the third electromagnet 62 is arranged in the third mounting cavity 32, a third friction surface 71 is formed on a side surface of the bracket 7 facing the third mounting cavity 32, and the third electromagnet 62 drives the third friction plate 61 to be attached to or detached from the third friction surface 71. Specifically, the method comprises the following steps. When the third electromagnet 62 is not energized, the third friction plate 61 is in close contact with the third friction surface 71; when the third electromagnet 62 is energized, the third friction plate 61 is separated from the third friction surface 71.
In an embodiment, the third electromagnet 62 includes a third coil 621, a third spring 622, and a third core 623, the third coil 621 is fixed in the third mounting cavity 32, the third core 623 is inserted into the third coil 621, one end of the third spring 622 abuts against a cavity wall of the third mounting cavity 32, the other end of the third spring 622 abuts against one end of the third core 623, and the third friction plate 61 is fixed at the other end of the third core 623.
In one embodiment, as shown in fig. 7, the handrail plate 1 is provided with a holding groove 12 for facilitating the operation of a human hand. That is, the hand holding groove 12 is grasped by a human hand to adjust the armrest of the forklift.
In one embodiment, as shown in fig. 7, the handrail plate 1 is provided with a button 8 which is in communication connection with a controller on the forklift, the first electromagnet 42, the second electromagnet 52 and the third electromagnet 62 are in communication connection with the controller on the forklift, and the first electromagnet 42, the second electromagnet 52 and the third electromagnet 62 are electrically connected with a power supply on the forklift.
As shown in fig. 8, it is assumed that the second arm 3 has a length a and the first arm 2 has a length b. When a is equal to b, the adjustment range of the balustrade panel 1 is the largest, and at this time, the balustrade panel 1 can be adjusted to any position within a circle with the bracket 7 as the center and a + b as the radius.
The forklift handrail of the embodiment has the following working principle:
in the locked state shown in fig. 2, when the balustrade panel 1 needs to be adjusted, the grip recess 12 of the balustrade panel 1 is grasped, the push button 8 is pressed, the first electromagnet 42, the second electromagnet 52 and the third electromagnet 62 are energized simultaneously, the first iron core 423 of the first electromagnet 42 retracts to drive the first friction plate 41 and the first friction surface 11 to separate from each other, the second iron core 523 of the second electromagnet 52 retracts to drive the second friction plate 51 to separate from the second friction surface 22, the third core 623 of the third electromagnet 62 retracts to drive the third friction plate 61 to separate from the third friction surface 71, so as to release the locking of the armrest plate 1 and the first rotating arm 2, the locking of the first rotating arm 2 and the second rotating arm 3, and the locking of the second rotating arm 3 and the bracket 7, at this time, the forklift armrest is unlocked, and the forklift armrest is in an adjustable state (see fig. 3).
After the driver adjusts the armrest plate 1 to the most comfortable position, the button 8 is released, the first electromagnet 42, the second electromagnet 52 and the third electromagnet 62 are powered off at the same time, the first iron core 423 of the first electromagnet 42 extends under the action of the first spring 422, the first friction plate 41 is tightly attached to the first friction surface 11, the second iron core 523 of the second electromagnet 52 extends under the action of the second spring 522, the second friction plate 51 is tightly attached to the second friction surface 22, the third iron core 523 of the third electromagnet 62 extends under the action of the third spring 622, and the third friction plate 61 is tightly attached to the third friction surface 71, so that the armrest plate 1 is locked with the first rotating arm 2, the first rotating arm 2 is locked with the second rotating arm 3, and the second rotating arm 3 is locked with the bracket 7.
The embodiment of the utility model provides a fork truck handrail removes first locking mechanical system 4, second locking mechanical system 5 and third locking mechanical system 6, and handrail board 1 can rotate relatively with first rocking arm 2, first rocking arm 2 can rotate relatively with second rocking arm 3, second rocking arm 3 can rotate relatively with support 7, and at this moment, rotate handrail board 1 can be disposable adjust the handrail board to the most comfortable position. The adjustment is convenient, and the angle adjustment range is large.
In another embodiment, a first friction surface may be disposed at a first end of the first rotating arm, and a first mounting cavity may be disposed on the armrest panel.
In another embodiment, a second friction surface may be provided at the second end of the first pivot arm and a second mounting cavity may be provided at the first end of the second pivot arm.
In another embodiment, a third friction surface may be provided at the second end of the second pivot arm and a third mounting cavity may be provided in the bracket.
Additionally, the embodiment of the utility model provides a still provide a fork truck, its fork truck handrail that includes above-mentioned embodiment.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A forklift armrest is characterized by comprising an armrest plate, a first rotating arm, a second rotating arm, a first locking mechanism, a second locking mechanism, a third locking mechanism and a support, wherein the support is fixed on a forklift body, the first end of the first rotating arm is hinged to the armrest plate at a first hinged position, the second end of the first rotating arm is hinged to the first end of the second rotating arm at a second hinged position, and the second end of the second rotating arm is hinged to the support at a third hinged position;
the first locking mechanism is arranged at the first hinged position and used for locking the relative rotation of the armrest plate and the first rotating arm;
the second locking mechanism is arranged at the second hinge position and used for locking the relative rotation of the first rotating arm and the second rotating arm;
the third locking mechanism is arranged at the third hinged position and used for locking the relative rotation of the second rotating arm and the bracket.
2. The forklift armrest of claim 1, wherein the bracket is secured to or adjacent to a seat of a forklift.
3. The forklift handrail of claim 1, wherein the first locking mechanism comprises a first friction plate and a first electromagnet, a first friction surface is disposed on the first end of the first rotating arm or the handrail plate, and the first electromagnet drives the first friction plate to be attached to or detached from the first friction surface; when the first electromagnet is not electrified, the first friction plate is tightly attached to the first friction surface; when the first electromagnet is electrified, the first friction plate is separated from the first friction surface;
the second locking mechanism comprises a second friction plate and a second electromagnet, a second friction surface is arranged at the second end of the first rotating arm or the first end of the second rotating arm, and the second electromagnet drives the second friction plate to be attached to or separated from the second friction surface; when the second electromagnet is not electrified, the second friction plate is tightly attached to the second friction surface; when the second electromagnet is electrified, the second friction plate is separated from the second friction surface;
the third locking mechanism comprises a third friction plate and a third electromagnet, a third friction surface is arranged at the second end of the second rotating arm or on the bracket, and the third electromagnet drives the third friction plate to be attached to or separated from the third friction surface; when the third electromagnet is not electrified, the third friction plate is tightly attached to the third friction surface; when the third electromagnet is electrified, the third friction plate is separated from the third friction surface.
4. The forklift armrest according to claim 3, wherein the first end of the first boom is provided with a first mounting cavity in which the first electromagnet is disposed, the first friction surface being formed on a side surface of the armrest plate facing the first mounting cavity;
the first electromagnet comprises a first coil, a first spring and a first iron core, the first coil is fixed in the first installation cavity, the first iron core is inserted in the first coil, one end of the first spring is abutted to the wall of the first installation cavity, the other end of the first spring is abutted to one end of the first iron core, and the first friction plate is fixed to the other end of the first iron core.
5. The forklift armrest according to claim 3, wherein a second mounting cavity is provided on the first end of the second pivot arm, the second electromagnet is disposed in the second mounting cavity, and the second friction surface is formed on a side surface of the second end of the first pivot arm facing the second mounting cavity;
the second electromagnet comprises a second coil, a second spring and a second iron core, the second coil is fixed in the second installation cavity, the second iron core is inserted in the second coil in a penetrating mode, one end of the second spring abuts against the wall of the second installation cavity, the other end of the second spring abuts against one end of the second iron core, and the second friction plate is fixed at the other end of the second iron core.
6. The forklift armrest according to claim 3, wherein the second end of the second pivot arm is provided with a third mounting cavity in which the third electromagnet is disposed, the third friction surface being formed on a side surface of the bracket facing the third mounting cavity;
the third electromagnet comprises a third coil, a third spring and a third iron core, the third coil is fixed in the third installation cavity, the third iron core is inserted into the third coil, one end of the third spring is abutted against the cavity wall of the third installation cavity, the other end of the third spring is abutted against one end of the third iron core, and the third friction plate is fixed at the other end of the third iron core.
7. The forklift handrail of any one of claims 1 to 6, wherein a hand-held recess is provided in the handrail plate.
8. The forklift armrest according to any one of claims 1 to 6, wherein the first, second, and third locking mechanisms lock and unlock simultaneously.
9. The forklift handrail of any one of claims 3 to 6, wherein a button in communication connection with a controller on the forklift is arranged on the handrail plate, the first electromagnet, the second electromagnet and the third electromagnet are in communication connection with the controller on the forklift, and the first electromagnet, the second electromagnet and the third electromagnet are electrically connected with a power supply on the forklift;
the button is pressed, and the first electromagnet, the second electromagnet and the third electromagnet are electrified simultaneously to release the locking of the armrest plate and the first rotating arm, the locking of the first rotating arm and the second rotating arm and the locking of the second rotating arm and the bracket;
and when the button is released, the first electromagnet, the second electromagnet and the third electromagnet are powered off simultaneously, so that the locking of the armrest plate and the first rotating arm, the locking of the first rotating arm and the second rotating arm and the locking of the second rotating arm and the support are realized.
10. A forklift comprising the forklift handrail of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920856416.1U CN210795657U (en) | 2019-06-06 | 2019-06-06 | Forklift armrest and forklift |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920856416.1U CN210795657U (en) | 2019-06-06 | 2019-06-06 | Forklift armrest and forklift |
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| Publication Number | Publication Date |
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| CN210795657U true CN210795657U (en) | 2020-06-19 |
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| CN201920856416.1U Active CN210795657U (en) | 2019-06-06 | 2019-06-06 | Forklift armrest and forklift |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508147A (en) * | 2020-11-17 | 2022-05-17 | 昆山市文杰市政工程有限公司 | Excavator handrail convenient to install |
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2019
- 2019-06-06 CN CN201920856416.1U patent/CN210795657U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508147A (en) * | 2020-11-17 | 2022-05-17 | 昆山市文杰市政工程有限公司 | Excavator handrail convenient to install |
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