CN113023280A

CN113023280A - Transfer trolley

Info

Publication number: CN113023280A
Application number: CN202110433645.4A
Authority: CN
Inventors: 章涛; 凌斯
Original assignee: Zhejiang Lingao Electrical Industrial Co ltd
Current assignee: Zhejiang Lingao Electrical Industrial Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-06-25

Abstract

The invention relates to the technical field of transfer vehicles, and provides a transfer vehicle, which comprises: the scissor fork type lifting mechanism comprises a lower chassis, an upper tray, a scissor fork rod group and a hydraulic driving device; the shearing fork rod group is arranged between the lower chassis and the upper tray; the fixed end of the hydraulic driving device is connected with the lower chassis, and the telescopic end of the hydraulic driving device is connected with the scissor fork rod group and used for enabling the upper tray to do lifting movement; the bearing platform is arranged on the upper tray and is suitable for bearing the switch cabinet; the automatic locking mechanism comprises a locking pin which is telescopically arranged at the joint of the scissor rod group and the upper tray, and has an unlocking state for allowing the scissor rod group to move along a first direction and a locking state for limiting the scissor rod group to move along a second direction opposite to the first direction. This transfer car (buggy) utilizes scissors fork elevating system to realize load-bearing platform's lift, and it is more convenient to use, labour saving and time saving. Moreover, the automatic locking mechanism can lock the scissor rod group after the height adjustment is finished, so that the bearing platform is prevented from falling back.

Description

Transfer trolley

Technical Field

The invention relates to the technical field of transfer vehicles, in particular to a transfer vehicle.

Background

Due to their high weight, circuit breakers in switchgear cabinets are usually transported by means of transport vehicles during movement. The existing transfer trolley is provided with a platform and a frame arranged below the platform, a height-adjusting nut is arranged between the platform and the frame, and casters are arranged at the bottom of the frame. Because the circuit breakers in the switch cabinets with different models are different in installation height, the height of the platform needs to be adjusted by screwing the height-adjusting nut during installation, so that the installation is convenient.

However, when the height-adjusting nut is screwed, a certain resistance exists, and especially when the switch cabinet is placed on the platform, the height-adjusting nut can be screwed even by means of a spanner; in addition, when screwing the heightening nut, the height of the platform changes slowly, and the height of the platform changes is very limited when the heightening nut is screwed for one circle, so that the whole heightening process is time-consuming and labor-consuming.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects of time and labor waste of the transfer vehicle in the prior art, so that the transfer vehicle is provided.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the invention provides a transfer vehicle, comprising: the scissor fork type lifting mechanism comprises a lower chassis, an upper tray, a scissor fork rod group and a hydraulic driving device; the scissor fork rod group is arranged between the lower chassis and the upper tray, one end of the scissor fork rod group is hinged with the lower chassis, and the other end of the scissor fork rod group is connected with the upper tray in a sliding manner; the fixed end of the hydraulic driving device is connected with the lower chassis, and the telescopic end of the hydraulic driving device is connected with the scissor rod group and used for pushing the scissor rod group to enable the upper tray to do lifting movement; the bearing platform is arranged on the upper tray and is suitable for bearing the switch cabinet; the automatic locking mechanism comprises a locking pin which is telescopically arranged at the joint of the scissor rod group and the upper tray and has an unlocking state for allowing the scissor rod group to move along a first direction and a locking state for limiting the scissor rod group to move along a second direction opposite to the first direction.

Further, the scissor lever group comprises a first driving lever and a second driving lever; the first driving rod and the second driving rod are arranged in a scissor structure, one end of the first driving rod is hinged to the lower chassis through a first shaft body, and the other end of the first driving rod is slidably arranged on the upper tray; one end of the second driving rod is hinged to the upper tray through a second shaft body, and the other end of the second driving rod is slidably arranged on the lower chassis; the telescopic end of the hydraulic driving device is connected with one end, far away from the upper tray, of the first driving rod, and the hydraulic driving device is suitable for driving the first driving rod to rotate around the first shaft body.

Furthermore, the number of the scissor rod sets is two, the two scissor rod sets are symmetrically arranged on two sides of the lower chassis, and the two scissor rod sets are connected through a plurality of support rods arranged in parallel.

Furthermore, an upper chute is arranged on the upper tray, and one end of the first driving rod is connected with a first sliding block which is connected to the upper chute in a sliding manner; a lower sliding groove is formed in the lower chassis, and one end of the second driving rod is connected with a second sliding block which is connected to the lower sliding groove in a sliding mode; automatic locking mechanical system including install go up on the tray and with go up the base that the chute position corresponds the setting, be equipped with the mounting groove in the base, be connected with on the base and stretch to guiding axle in the mounting groove, the guiding axle with the base corresponds be formed with the slip hole between the inner wall of mounting groove, the stop pin slides and sets up in the slip hole, the guiding axle orientation go up the one end of spout with be connected with the elastic component that is the elasticity compression state between the stop pin.

Furthermore, a wedge-shaped fixture block is arranged at one end, located outside the sliding hole, of the locking pin, and the elastic piece is connected between the wedge-shaped fixture block and the guide shaft; the wedge-shaped fixture block is provided with an inclined guide surface and a limiting end surface, the inclined guide surface is arranged on one surface of the wedge-shaped fixture block, which is back to the elastic piece, and is used for guiding the first slide block to move along the first direction, and the limiting end surface is used for limiting the first slide block to move along the second direction so as to realize automatic locking of the first slide block.

Furthermore, one side, back to the wedge-shaped clamping block, of the locking pin is provided with an accommodating cavity, the elastic piece is arranged in the accommodating cavity, and one end of the guide shaft can extend into the accommodating cavity and is matched with the accommodating cavity in shape.

Further, the automatic locking mechanism also comprises an unlocking handle fixedly connected with the locking pin and penetrating through the guide shaft; the unlocking handle is provided with a locking state which drives the locking pin to extend into the upper sliding groove so as to prevent the first sliding block from moving along the second direction, and an unlocking state which enables the locking pin to be pulled out from the upper sliding groove and to be abutted against the side wall of the upper tray so as to enable the first sliding block to freely slide in the upper sliding groove.

Further, the bearing platform comprises a fixed platform and a sliding platform; the fixed platform is fixedly arranged on one surface, back to the lower chassis, of the upper tray, the sliding platform is slidably arranged on one surface, back to the lower chassis, of the upper tray, and the sliding platform and the fixed platform are located in the same plane.

Furthermore, the sliding platform includes two, two sliding platform symmetric distribution is in fixed platform's both sides.

Furthermore, one surface of the upper tray, which faces away from the lower chassis, is provided with a guide rail, one surface of the sliding platform, which faces the upper tray, is provided with a third sliding block, and the third sliding block is slidably arranged on the guide rail.

The technical scheme of the invention has the following advantages:

according to the transfer trolley provided by the invention, the lifting of the bearing platform is realized by utilizing the scissor type lifting mechanism, compared with the original mode that the height of the bearing platform is adjusted by manually screwing the height-adjusting nut, the transfer trolley is more convenient to use, and the height of the bearing platform can be adjusted in a larger range in a shorter time, so that the time and the labor are saved. Moreover, by arranging the automatic locking mechanism, the scissor fork rod group can be locked after the height adjustment is finished, so that the bearing platform is prevented from falling back.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a side view of a transfer vehicle in an embodiment of the present invention;

FIG. 2 is a schematic view of a partial structure of the transfer vehicle in an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a top view of the transfer vehicle in an embodiment of the present invention.

Description of reference numerals:

1. a load-bearing platform; 2. An upper tray; 3. A lower chassis;

4. a first drive lever; 5. A second drive lever; 6. A hydraulic cylinder;

7. an upper chute; 8. A lower chute; 9. A fixed platform;

10. a sliding platform; 11. An unlocking handle; 12. A support bar;

13. a base; 14. A guide shaft; 15. A locking pin;

16. an elastic member; 17. A first slider.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

FIG. 1 is a side view of a transfer vehicle in an embodiment of the present invention; as shown in fig. 1, the present embodiment provides a transfer vehicle comprising: a scissor lift mechanism, a load-bearing platform 1 and an automatic locking mechanism.

The scissor fork type lifting mechanism comprises a lower chassis 3, an upper tray 2, a scissor fork rod group and a hydraulic driving device; the scissor rod group is arranged between the lower chassis 3 and the upper tray 2 and comprises a first driving rod 4 and a second driving rod 5; the first driving rod 4 and the second driving rod 5 are arranged in a scissor structure, one end of the first driving rod 4 is hinged to the lower chassis 3 through a first shaft body, and the other end of the first driving rod 4 is slidably arranged on the upper tray 2; one end of the second driving rod 5 is hinged on the upper tray 2 through a second shaft body, and the other end of the second driving rod 5 is slidably arranged on the lower chassis 3. The two scissor rod groups are symmetrically arranged on two sides of the lower chassis 3 and the upper tray 2, and are connected through a plurality of support rods 12 arranged in parallel.

FIG. 2 is a schematic view of a partial structure of the transfer vehicle in an embodiment of the present invention; as shown in fig. 2, the hydraulic driving device may be a hydraulic cylinder 6, a base of the hydraulic cylinder 6 may be fixed on the lower chassis 3 by a bolt, and a telescopic head of the hydraulic cylinder 6 may be connected to the support rod 12, so that an acting force generated by the hydraulic cylinder 6 directly acts on the support rod 12, and indirectly rotates the first driving rod 4 around the first shaft, so as to lift the upper tray 2. Wherein, hydraulic drive device also can be corresponding sets up two to tray 2 goes up and down in better drive. The hydraulic cylinder 6 can be driven by an electric system, and can also be controlled to ascend and descend by a pedal on the hydraulic cylinder 6.

Wherein, load-bearing platform 1 sets up on last tray 2, is suitable for bearing the weight of cubical switchboard, and it is along with the lift of last tray 2 and synchronous elevating movement.

FIG. 3 is an enlarged view of a portion of FIG. 2; as shown in fig. 3, the automatic locking mechanism includes a locking pin 15 telescopically disposed at a connection of the scissor lever assembly and the upper tray 2, having an unlocked state allowing movement of the scissor lever assembly in a first direction and a locked state restricting movement of the scissor lever assembly in a second direction opposite to the first direction.

According to the transfer trolley provided by the invention, the lifting of the bearing platform 1 is realized by utilizing the scissor type lifting mechanism, compared with the original mode that the height of the bearing platform 1 is adjusted by manually screwing the height-adjusting nut, the use is more convenient, and the height of the bearing platform 1 can be adjusted in a larger range in a shorter time, so that the time and the labor are saved. Moreover, by arranging the automatic locking mechanism, the scissor fork rod group can be locked after the height adjustment is finished, and the bearing platform 1 is prevented from falling back.

In this embodiment, the upper chute 7 may be disposed on the outer side surface of the upper tray 2, one end of the first driving rod 4 is connected to the first slider 17 slidably connected to the upper chute 7, and when one end of the first driving rod 4 rotates around the first shaft, the other end of the first driving rod 4 may slide along the upper chute 7. Similarly, the outer side surface of the lower chassis 3 is provided with a lower chute 8, one end of the second driving rod 5 is connected with a second sliding block connected to the lower chute 8 in a sliding manner, and when one end of the second driving rod 5 rotates around the second shaft body, the other end of the second driving rod 5 can slide along the lower chute 8.

In this embodiment, the automatic locking mechanism further includes a base 13 installed on the upper tray 2 and corresponding to the upper chute 7, wherein the base 13 can be welded on the upper tray 2, the base 13 has a hollow cavity to form a mounting groove, and the base 13 is connected with a guide shaft 14 extending into the mounting groove, for example, the guide shaft 14 and the base 13 can be integrally formed. The outer wall of the guide shaft 14 and the inner wall of the mounting groove form a sliding hole for the locking pin 15 to slide, the locking pin 15 is arranged in the sliding hole in a sliding mode, and an elastic piece 16 in an elastic compression state is connected between one end, facing the upper sliding chute 7, of the guide shaft 14 and the locking pin 15. For example, the elastic member 16 may be a coil spring.

In this embodiment, a wedge-shaped block is disposed at one end of the locking pin 15 located outside the sliding hole, and the elastic member 16 is clamped between the wedge-shaped block and the guide shaft 14; the wedge-shaped fixture block is provided with an inclined guide surface and a limiting end surface, the inclined guide surface is arranged on the surface, back to the elastic piece 16, of the wedge-shaped fixture block and used for guiding the first sliding block 17 to move along the first direction, and the limiting end surface is used for limiting the first sliding block 17 to move along the second direction so as to achieve automatic locking of the first sliding block 17.

In this embodiment, one side of the locking pin 15 facing away from the wedge-shaped fixture block is provided with an accommodating cavity, the elastic member 16 is disposed in the accommodating cavity, and one end of the guide shaft 14 can extend into the accommodating cavity and match with the shape of the accommodating cavity.

In this embodiment, the automatic locking mechanism further includes an unlocking handle 11 fixedly connected to the locking pin 15 and passing through the guide shaft 14; the unlocking handle 11 has a locking state in which the locking pin 15 is driven to extend into the upper chute 7 to prevent the first slider 17 from moving in the second direction, and an unlocking state in which the locking pin 15 is pulled out from the upper chute 7 and abuts against the side wall of the upper tray 2 to enable the first slider 17 to freely slide in the upper chute 7. One locking pin 15 may include two wedge-shaped locking blocks, which is beneficial to improve reliability.

During the use, locking pin 15's wedge fixture block stretches to first slider 17 under the initial condition, and when first slider 17 followed the first direction motion, first slider 17 and the inclined guide face contact of wedge fixture block can retract along with first slider 17's motion wedge fixture block, and elastic component 16 is compressed this moment, keeps away from the back when first slider 17, and the wedge fixture block gets back to initial position, and this process is load-bearing platform 1's the process of rising. When the first sliding block 17 moves along the second direction, the first sliding block 17 is abutted to the limiting end face of the wedge-shaped fixture block, and at the moment, the first sliding block 17 can be blocked to prevent the first sliding block from moving along the second direction, so that the load-bearing platform 1 is prevented from falling back. When the bearing platform 1 needs to fall back, the locking pin 15 can be pulled out from the sliding hole through the unlocking handle 11, the elastic piece 16 is compressed at the moment, after the locking pin 15 is pulled out for a certain length, the unlocking handle 11 can be rotated, the locking pin 15 can abut against the side wall of the upper tray 2 at the moment, and at the moment, the first sliding block 17 can freely slide to enable the bearing platform 1 to fall back. The structure and principle of the second slide block are the same as those of the first slide block 17, and the description is omitted here.

FIG. 4 is a top view of the transfer vehicle in an embodiment of the present invention; as shown in fig. 4, in the present embodiment, the load-bearing platform 1 includes a fixed platform 9 and a sliding platform 10; fixed platform 9 is fixed to be set up in the one side of last tray 2 back to lower chassis 3, and slide bracket 10 slidable ground sets up in the one side of last tray 2 back to lower chassis 3, and slide bracket 10 is located the coplanar with fixed platform 9. Wherein, the one side of going up tray 2 back to lower chassis 3 is provided with the guide rail, and the sliding platform 10 is provided with the third slider towards the one side of going up tray 2, and the third slider slidable sets up on the guide rail. Wherein, the third slider and the guide rail can be replaced by a slide rail component in the prior art.

Preferably, the sliding platform 10 comprises two sliding platforms 10, and the two sliding platforms 10 are symmetrically distributed on two sides of the fixed platform 9.

In this embodiment, a pin may be provided to lock the third slider on the guide rail; for example, a plurality of limiting holes may be formed in the guide rail, the limiting holes are spaced apart from each other along the extending direction of the guide rail, and the third slider is also correspondingly provided with a limiting hole, so that the third slider is fixed by the pin and the limiting holes after the sliding platform 10 is adjusted in place.

In conclusion, the transfer trolley in the embodiment can quickly adjust the height of the bearing platform to adapt to circuit breakers or transformers of different specifications, and circuit breakers or transformers with larger weight can be conveniently moved to the transfer trolley; moreover, due to the existence of the automatic locking mechanism, the transfer trolley can be prevented from being damaged by personnel and equipment caused by forward dumping of the breaker or the mutual inductor after sudden stop in the running process.

According to the transfer trolley in the embodiment, when the circuit breaker or the mutual inductor is replaced, the circuit breaker or the mutual inductor does not need to be lifted off from the transfer trolley through manpower, and the risk that equipment and personnel are damaged can be reduced.

The transfer trolley in the embodiment has strong universality, and the transfer trolleys with various specifications are not required to be configured in the transformer substation, so that the configuration cost can be reduced, and the occupied area is reduced.

The transfer trolley in the embodiment can avoid the uncontrolled descending of the transfer trolley after bearing due to the accidents that a hydraulic cylinder is in a problem or an oil return valve is not completely closed and the like in the operation process. When the empty vehicle comes out from the cabinet body and is connected with the circuit breaker, the circuit breaker is prevented from inclining outwards due to the fact that the transfer vehicle and the circuit breaker are locked and still connected and the transfer vehicle descends after bearing, and the transportation process is safer.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A transfer car (buggy), comprising:

the scissor fork type lifting mechanism comprises a lower chassis, an upper tray, a scissor fork rod group and a hydraulic driving device;

the scissor fork rod group is arranged between the lower chassis and the upper tray, one end of the scissor fork rod group is hinged with the lower chassis, and the other end of the scissor fork rod group is connected with the upper tray in a sliding manner; the fixed end of the hydraulic driving device is connected with the lower chassis, and the telescopic end of the hydraulic driving device is connected with the scissor rod group and used for pushing the scissor rod group to enable the upper tray to do lifting movement;

the bearing platform is arranged on the upper tray and is suitable for bearing the switch cabinet;

the automatic locking mechanism comprises a locking pin which is telescopically arranged at the joint of the scissor rod group and the upper tray and has an unlocking state for allowing the scissor rod group to move along a first direction and a locking state for limiting the scissor rod group to move along a second direction opposite to the first direction.

2. The transfer car (buggy) of claim 1,

the scissor fork rod group comprises a first driving rod and a second driving rod;

the first driving rod and the second driving rod are arranged in a scissor structure, one end of the first driving rod is hinged to the lower chassis through a first shaft body, and the other end of the first driving rod is slidably arranged on the upper tray;

one end of the second driving rod is hinged to the upper tray through a second shaft body, and the other end of the second driving rod is slidably arranged on the lower chassis;

the telescopic end of the hydraulic driving device is connected with one end, far away from the upper tray, of the first driving rod, and the hydraulic driving device is suitable for driving the first driving rod to rotate around the first shaft body.

3. The transfer car (buggy) of claim 2,

the two shearing fork rod groups are symmetrically arranged on two sides of the lower chassis and are connected through a plurality of support rods arranged in parallel.

4. The transfer car (buggy) of claim 2,

an upper sliding groove is formed in the upper tray, and one end of the first driving rod is connected with a first sliding block which is connected to the upper sliding groove in a sliding mode; a lower sliding groove is formed in the lower chassis, and one end of the second driving rod is connected with a second sliding block which is connected to the lower sliding groove in a sliding mode;

automatic locking mechanical system including install go up on the tray and with go up the base that the chute position corresponds the setting, be equipped with the mounting groove in the base, be connected with on the base and stretch to guiding axle in the mounting groove, the guiding axle with the base corresponds be formed with the slip hole between the inner wall of mounting groove, the stop pin slides and sets up in the slip hole, the guiding axle orientation go up the one end of spout with be connected with the elastic component that is the elasticity compression state between the stop pin.

5. The transfer car (buggy) according to claim 4, wherein one end of said locking pin located outside said sliding hole is provided with a wedge-shaped block, and said elastic member is connected between said wedge-shaped block and said guide shaft; the wedge-shaped fixture block is provided with an inclined guide surface and a limiting end surface, the inclined guide surface is arranged on one surface of the wedge-shaped fixture block, which is back to the elastic piece, and is used for guiding the first slide block to move along the first direction, and the limiting end surface is used for limiting the first slide block to move along the second direction so as to realize automatic locking of the first slide block.

6. The transfer car (buggy) according to claim 5, wherein the side of said locking pin facing away from said wedge-shaped fixture block is provided with a receiving cavity, said elastic member is disposed in said receiving cavity, and one end of said guide shaft can extend into said receiving cavity and match the shape of said receiving cavity.

7. The transfer car (buggy) of claim 4, wherein said automatic locking mechanism further comprises an unlocking handle fixedly connected to said locking pin and passing through said guide shaft; the unlocking handle is provided with a locking state which drives the locking pin to extend into the upper sliding groove so as to prevent the first sliding block from moving along the second direction, and an unlocking state which enables the locking pin to be pulled out from the upper sliding groove and to be abutted against the side wall of the upper tray so as to enable the first sliding block to freely slide in the upper sliding groove.

8. The transfer car (buggy) of claim 1,

the bearing platform comprises a fixed platform and a sliding platform;

the fixed platform is fixedly arranged on one surface, back to the lower chassis, of the upper tray, the sliding platform is slidably arranged on one surface, back to the lower chassis, of the upper tray, and the sliding platform and the fixed platform are located in the same plane.

9. The transfer car (buggy) of claim 8,

the sliding platforms comprise two sliding platforms which are symmetrically distributed on two sides of the fixed platform.

10. The transfer car (buggy) of claim 8,

the side, back to the lower chassis, of the upper tray is provided with a guide rail, the side, facing the upper tray, of the sliding platform is provided with a third sliding block, and the third sliding block is slidably arranged on the guide rail.