A pull-type loading vehicle structure and method of use thereof

Abstract

The application discloses a lifting type loading vehicle structure and a use method thereof, and belongs to the technical field of loading vehicles. The structure comprises a loading vehicle and two sets of lifting devices, the two sets of lifting devices are symmetrically arranged on the loading vehicle, the lifting device comprises a telescopic arm, a pull arm and a linkage frame, the pull arm is connected with the telescopic arm through a moving pair and connected with a telescopic wall through a telescopic driving element, the middle part of the pull arm is movably connected with the chassis of the loading vehicle through a vertical driving element, the middle part of the linkage frame is connected with one end of the pull arm away from the telescopic arm through a rotating pair, a locking mechanism is arranged between the linkage frame and the pull arm, and the linkage frame is connected with the rear end of the chassis of the loading vehicle through a rotating pair. The locking mechanism can be unlocked independently, the unlocking mode has high reliability, compared with the prior art, a power mechanism does not need to be additionally arranged on the loading vehicle to cooperate with unlocking, the loading space specially arranged on the loading vehicle is ensured, and the compactness of the loading vehicle structure is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of loading vehicles, in particular to a lifting type loading vehicle structure and a method for using the same. BACKGROUND

[0002] The current loading vehicles for special equipment loading, hoisting and erecting have the following disadvantages: first, the loading vehicles have single functions, either only loading and transportation functions, or only hoisting functions, or only erecting functions; second, the loading vehicles have a small number of special equipment to be carried for reloading; and third, the loading vehicles, hoisting equipment and loading equipment need to be cooperated to complete reloading after the operation is finished, which not only reduces the continuous operation capacity of the equipment, but also increases the number of supporting equipment. Therefore, it is particularly important to solve the problems of multi-loading of the special equipment loading vehicles and quick reloading.

[0003] A linkage locking mechanism for lifting arm motion control is disclosed in Chinese patent document CN217262322U, which comprises a telescopic hook arm, a pull arm and a rotary arm connected in sequence. The rotary arm is installed on a rack body. The pull arm is provided with an erecting point of the telescopic hook arm and a rotary point I. One end of the rack body is provided with a rotary point II, and the other end is provided with a limiting mounting seat. The limiting mounting seat is connected with a locking hook, and a spring is arranged in the locking hook. The pull arm is connected with the rotary arm through a crank shaft. A connecting rod, a sliding rod and a pull fork are sequentially connected on the crank shaft. The pull fork is connected with the limiting mounting seat through the locking hook. Through a pure mechanical structure, the control of the rotary arm motion of the lifting arm mechanism during the lifting and loading process is realized. The automatic switching of the lifting arm between the functions of lifting and loading and erecting and unloading is automatically controlled.

[0004] The linkage locking mechanism is applied to the loading vehicle to realize the functions of special equipment loading, hoisting, erecting and unloading. When the equipment is unloaded, the special equipment needs to be driven backward by an external force to press the pull fork, the locking hook is rotated by the pull fork to be separated from the limiting mounting seat, so as to realize unlocking. However, the unlocking mode has low reliability, and a power mechanism needs to be additionally arranged on the loading vehicle to drive the special equipment to move backward. The arrangement of the power mechanism will compress the loading space of the special equipment on the loading vehicle, or cause the length of the loading vehicle to be lengthened. SUMMARY

[0005] To solve the above problems, the present application provides a lifting type loading vehicle structure and a method for using the same, which can ensure that the loading vehicle can independently complete the reloading of the special equipment. At the same time, the present application also solves the problem of the multi-loading equipment falling to the ground before operation.

[0006] The present application is realized by the following technical solutions:

[0007] The lifting loading vehicle structure comprises a vehicle and two sets of lifting devices, the two sets of lifting devices are symmetrically arranged on the vehicle, the lifting device comprises a telescopic arm, a pull arm and a linkage frame, the pull arm is connected with the telescopic arm through a moving pair and connected with a telescopic wall through a telescopic driving piece, the middle part of the pull arm is movably connected with the chassis of the vehicle through a vertical driving piece, the middle part of the linkage frame is connected with the end of the pull arm away from the telescopic arm through a rotating pair, and a locking mechanism is arranged between the linkage frame and the pull arm, and the linkage frame is connected with the rear end of the chassis of the vehicle through a rotating pair.

[0008] The telescopic arm is L-shaped, and a bayonet is arranged at the end of the telescopic arm away from the pull arm, the linkage frame is L-shaped, and a roller A is connected with the linkage frame through a rotating shaft A at the position away from the telescopic arm.

[0009] The vertical driving piece and the telescopic driving piece are both electric cylinders.

[0010] The pull arm is F-shaped, and the height of the connection point of the pull arm and the vertical driving piece is greater than the height of the connection point of the pull arm and the linkage frame, and the height of the connection point of the linkage frame and the chassis of the vehicle is the lowest.

[0011] The locking mechanism comprises a rotating driving motor, a rotating shaft B and an L-shaped locking frame, the rotating driving motor is installed on the linkage frame, the rotating shaft B is installed on the linkage frame through a base, one end of the rotating shaft B is connected with the output shaft of the rotating driving motor, and the other end is fixedly connected with the L-shaped locking frame, and a locking block is arranged on the pull arm at a position corresponding to the L-shaped locking frame.

[0012] Further comprising a support frame, a plurality of special equipment are arranged on the support frame, a hook ring is arranged at the top of the support frame, and a roller B is arranged at one end of the bottom of the support frame.

[0013] A lifting loading vehicle structure and a use method thereof, comprising the following main steps:

[0014] A, equipment loading: placing the support frame with special equipment on the ground behind the vehicle, controlling the lifting device to expand backward until the bayonet on the telescopic arm is clamped into the hook ring on the support frame, and controlling the lifting device to reset, loading the support frame and the special equipment onto the vehicle;

[0015] B, equipment vertical lifting: controlling the lifting device to drive the support frame and the special equipment to rotate upward, so that the support frame and the special equipment are gradually lifted vertically, and the rear end of the special equipment falls to the ground;

[0016] C, equipment unloading: controlling the lifting device to unload the support frame and the special equipment to the ground behind the vehicle.

[0017] The loading method of the equipment in step A comprises the following steps:

[0018] a, control the telescopic drive to shorten, drive the telescopic arm to move to the rear end of the vehicle relative to the pull arm, and make the rotation pair connected between the linkage frame and the pull arm invalid through the locking mechanism;

[0019] b, control the vertical driving part to extend, drive the telescopic arm, the pull arm and the linkage frame to rotate upward together around the rotation pair connected between the linkage frame and the vehicle chassis by a certain angle;

[0020] c, make the rotation pair connected between the linkage frame and the pull arm effective through the locking mechanism, and drive the telescopic arm and the pull arm to continue to rotate to the rear of the vehicle around the rotation pair connected between the pull arm and the linkage frame through the vertical driving part, until the socket on the telescopic arm is connected with the carabiner on the support frame;

[0021] d, control the vertical driving part to shorten, drive the telescopic arm, the linkage frame and the pull arm to rotate to the direction close to the vehicle chassis, when the support frame moves to the vehicle chassis and is parallel to the vehicle chassis, make the rotation pair between the linkage frame and the pull arm invalid through the locking mechanism;

[0022] e, control the telescopic drive to extend, drive the telescopic arm to move the support frame to the direction close to the vehicle head, that is, complete the equipment loading.

[0023] The vertical method of the equipment in the step B comprises the following main steps:

[0024] a, make the rotation pair connected between the linkage frame and the pull arm invalid through the locking mechanism;

[0025] b, control the vertical driving part to extend, drive the telescopic arm, the linkage frame, the pull arm, the special equipment and the support frame to rotate upward together around the rotation pair connected between the linkage frame and the vehicle chassis to the required angle;

[0026] c, control the telescopic drive to shorten, drive the telescopic arm, the special equipment and the support frame to move downward, until the special equipment falls to the ground, that is, complete the vertical.

[0027] The unloading method of the equipment in the step C comprises the following main steps:

[0028] a, control the telescopic drive to shorten, drive the telescopic arm to move the special equipment and the support frame backward;

[0029] b, make the rotation pair connected between the linkage frame and the pull arm effective through the locking mechanism;

[0030] c, control the vertical driving part to extend, drive the telescopic arm, the linkage frame, the pull arm, the special equipment and the support frame to rotate to the rear of the vehicle, until the support frame loaded with the special equipment is unloaded to the ground.

[0031] The beneficial effects of the present application are as follows:

[0032] 1. The locking mechanism can be unlocked autonomously, and the unlocking mode has high reliability. Compared with the prior art, no power mechanism needs to be additionally arranged on the vehicle to cooperate with the unlocking, which not only ensures the loading space of the special equipment arranged on the vehicle, but also is beneficial to improving the compactness of the vehicle structure.

[0033] 2. The lifting device can independently complete the loading, erecting and unloading of the support frame with the special equipment, that is, the lifting device can independently complete the replacement of the special equipment, greatly improving the replacement speed of the equipment, and while saving the transportation equipment and the loading equipment, the continuous operation capacity of the vehicle is also improved.

[0034] 3. The lifting device has simple structure and low manufacturing cost.

[0035] 4. Multiple special equipment can be arranged on the support frame, the number of the vehicle-mounted special equipment is improved, and in addition, the special equipment can be ensured to be completely landed during operation, meeting the landing requirement. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a structural schematic view of the lifting device of the present application;

[0037] Figure 2 is the equipment loading state of the present application Figure One ;

[0038] Figure 3 is the equipment loading state of the present application Figure Two ;

[0039] Figure 4 is the equipment loading state of the present application Figure Three ;

[0040] Figure 5 is the equipment loading state of the present application Figure Four ;

[0041] Figure 6 is the equipment loading state of the present application Figure Five ;

[0042] Figure 7 is the equipment loading state of the present application Figure Six ;

[0043] Figure 8 is the equipment loading state of the present application Figure Seven ;

[0044] Figure 9 is the equipment erecting state of the present application Figure One ;

[0045] Figure 10 is the equipment erecting state of the present application Figure Two ;

[0046] Figure 11is the erect state of the device of the present application Figure Three ;

[0047] Figure 12 is the erect state of the device of the present application Figure Four ;

[0048] Figure 13 is the unloading state of the device of the present application Figure One ;

[0049] Figure 14 is the unloading state of the device of the present application Figure Two ;

[0050] Figure 15 is the unloading state of the device of the present application Figure Three ;

[0051] Figure 16 is the unloading state of the device of the present application Figure Four ;

[0052] Figure 17 is the unloading state of the device of the present application Figure Five ;

[0053] Figure 18 is the unloading state of the device of the present application Figure Six ;

[0054] Figure 19 is the unloading state of the device of the present application Figure Seven ;

[0055] Figure 20 is the unloading state of the device of the present application Figure Eight .

[0056] In the figure: I - vehicle; II - special equipment; III - support frame; 1 - telescopic arm; 2 - erecting driving part; 3 - linkage frame, 30 - rotating shaft A; 4 - locking mechanism; 5 - pull arm; 6 - telescopic driving part. DETAILED DESCRIPTION

[0057] The content of the present application will be further explained in the form of implementation, but it should not be understood that the scope of the subject matter described in the present application is limited to the following examples, and any modification, replacement and change made according to the ordinary technical knowledge and conventional means in the art without departing from the above technical idea of the present application shall be included in the scope of the present application.

[0058] As Figures 1 to 20As shown, the lifting loading vehicle structure comprises a vehicle I and two sets of lifting devices, the two sets of lifting devices are symmetrically installed on the vehicle I, the lifting device comprises a telescopic arm 1, a pull arm 5 and a linkage frame 3, the pull arm 5 is connected with the telescopic arm 1 through a moving pair and connected with the telescopic wall 1 through a telescopic driving element 6, the middle part of the pull arm 5 is rotatably connected with the chassis of the vehicle I through a vertical driving element 2, the middle part of the linkage frame 3 is connected with the end of the pull arm 5 away from the telescopic arm 1 through a rotating pair, and a locking mechanism 4 is installed between the linkage frame 3 and the pull arm 5, and the linkage frame 3 is connected with the rear end of the chassis of the vehicle I through a rotating pair. In use, the end of the linkage frame 3 away from the telescopic arm 1 is connected with the rear end of the chassis of the vehicle I through a rotating pair. The locking mechanism 4 is used for controlling the effectiveness and invalidity of the rotating pair between the linkage frame 3 and the pull arm 5.

[0059] The telescopic arm 1 is L-shaped, and the end of the telescopic arm 1 away from the pull arm 5 is provided with a bayonet; the linkage frame 3 is L-shaped, and the position of the linkage frame 3 away from the telescopic arm 1 is connected with a roller A through a rotating shaft A30. In the loading, vertical lifting and unloading process, the roller A is in contact with the supporting frame III, so as to avoid scratching the surface of the supporting frame III by the vehicle I.

[0060] The vertical driving element 2 and the telescopic driving element 6 are both electric cylinders.

[0061] The pull arm 5 is F-shaped, and the elevation of the connection point of the pull arm 5 and the vertical driving element 2 is greater than the elevation of the connection point of the pull arm 5 and the linkage frame 3, which is greater than the elevation of the connection point of the linkage frame 3 and the chassis of the vehicle I. The connection points of the pull arm 5, the linkage frame 3 and the chassis of the vehicle I are not on the same straight line, which prevents the pull arm 5 and the linkage frame 3 from being stuck at the initial rotation, and ensures the reliability and action sensitivity of the lifting device.

[0062] The locking mechanism 4 comprises a rotating driving motor, a rotating shaft B and an L-shaped locking frame, the rotating driving motor is installed on the linkage frame 3, the rotating shaft B is installed on the linkage frame 3 through a base, one end of the rotating shaft B is connected with the output shaft of the rotating driving motor, and the other end is fixedly connected with the L-shaped locking frame, and the pull arm 5 is provided with a locking block at a position corresponding to the L-shaped locking frame. In use, the rotating driving motor is provided with a brake to keep the position. As shown, Figure 1 When the rotating driving motor drives the L-shaped locking frame to rotate upward by about 90 degrees to contact the pull arm 5, the L-shaped locking frame and the locking block jointly cooperate to make the rotating pair between the linkage frame 3 and the pull arm 5 invalid; when the rotating driving motor drives the L-shaped locking frame to separate from the pull arm 5 and the locking block, the rotating pair between the linkage frame 3 and the pull arm 5 is effective. The locking mechanism 4 can be unlocked automatically, and the unlocking mode has high reliability. Compared with the prior art, it is not necessary to additionally provide a power mechanism on the vehicle I to cooperate with the unlocking, which not only ensures the loading space of the special equipment II on the vehicle I, but also is conducive to improving the compactness of the vehicle I.

[0063] The support frame III is provided with a plurality of special equipment II, and the top of the support frame III is provided with a hook ring, and one end of the bottom is provided with a roller B. In use, the roller B is installed at the end of the bottom of the support frame III away from the vehicle 1, so as to reduce the friction between the support frame III and the ground during equipment loading and unloading.

[0064] A method for using the lifting loading vehicle structure, comprising the following main steps:

[0065] A, equipment loading: the support frame III provided with the special equipment II is placed on the ground in front of the vehicle 1, the pulling device is controlled to expand backward until the bayonet on the telescopic arm 1 is clamped into the hook ring on the support frame III, and the pulling device is controlled to reset, so that the support frame III and the special equipment II are loaded onto the vehicle 1;

[0066] B, equipment erecting: the pulling device is controlled to drive the support frame III and the special equipment II to rotate upward, so that the support frame III and the special equipment II are gradually erected, and the rear end of the special equipment II is landed on the ground;

[0067] C, equipment unloading: the pulling device is controlled to unload the support frame III and the special equipment II to the ground behind the vehicle 1.

[0068] As shown in Figures 2 to 8 , the loading method of the equipment in step A comprises the following steps:

[0069] a, the telescopic drive 6 is controlled to shorten, the telescopic arm 1 is driven to move to the rear end of the vehicle 1 relative to the pull arm 5, and the lock mechanism 4 is used to disable the rotation pair connecting the linkage frame 3 and the pull arm 5;

[0070] b, the erecting drive 2 is controlled to lengthen, the telescopic arm 1, the pull arm 5 and the linkage frame 3 are driven to rotate upward together around the rotation pair connecting the linkage frame 3 and the chassis of the vehicle 1 by a certain angle;

[0071] c, the lock mechanism 4 is used to enable the rotation pair connecting the linkage frame 3 and the pull arm 5, and the telescopic arm 1 and the pull arm 5 are driven to continue to rotate to the rear of the vehicle 1 around the rotation pair connecting the linkage frame 3 and the pull arm 5 by the erecting drive 2, until the bayonet on the telescopic arm 1 is connected with the hook ring on the support frame III;

[0072] d, the erecting drive 2 is controlled to shorten, the telescopic arm 1, the linkage frame 3 and the pull arm 5 are driven to rotate to the direction close to the chassis of the vehicle 1, when the support frame III moves to the chassis of the vehicle 1 and is parallel to the chassis of the vehicle 1, the lock mechanism 4 is used to disable the rotation pair between the linkage frame 3 and the pull arm 5;

[0073] e, the telescopic drive 6 is controlled to lengthen, the telescopic arm 1 drives the support frame III to move to the position close to the front of the vehicle 1, that is, the equipment loading is completed.

[0074] As Figures 9 to 12 shown, the erecting method of the device in step B includes the following main steps:

[0075] a. disable the rotary pair of linkage frame 3 and pull arm 5 by locking mechanism 4;

[0076] b. control the extension of erecting drive 2, drive the extension arm 1, linkage frame 3, pull arm 5, special equipment II and support frame III to rotate upward around the rotary pair of linkage frame 3 and the chassis of vehicle I to the required angle;

[0077] c. control the retraction of telescopic drive 6, drive the extension arm 1, special equipment II and support frame III to move downward until the special equipment II falls to the ground, that is, the erecting is completed.

[0078] As Figures 13 to 20 shown, the unloading method of the device in step C includes the following main steps:

[0079] a. control the retraction of telescopic drive 6, drive the extension arm 1 to move backward with special equipment II and support frame III;

[0080] b. enable the rotary pair of linkage frame 3 and pull arm 5 by locking mechanism 4;

[0081] c. control the extension of erecting drive 2, drive the extension arm 1, linkage frame 3, pull arm 5, special equipment II and support frame III to rotate to the rear of vehicle I until the support frame III with special equipment II is unloaded to the ground.

[0082] The lifting and loading vehicle structure and its use method provided by the present application have the following beneficial effects:

[0083] 1. The locking mechanism 4 can be unlocked independently, and the unlocking method has high reliability. Compared with the prior art, no power mechanism needs to be added on the vehicle I to cooperate with unlocking, which not only ensures the loading space of the special equipment II on the vehicle I, but also helps to improve the compactness of the vehicle I structure.

[0084] 2. The lifting device can independently complete the loading, erecting and unloading of the support frame III with special equipment II, that is, the lifting device can independently complete the replacement of special equipment II, greatly improving the equipment replacement speed, while saving transportation equipment and loading equipment, and also improving the continuous operation capability of the vehicle I.

[0085] 3. The lifting device has simple structure and low manufacturing cost.

[0086] 4. Multiple special equipment II can be placed on the support frame III, which improves the number of vehicle-mounted special equipment II, and in addition, ensures that all special equipment II falls to the ground during operation, meeting the landing requirements.

Claims

1. A lifting-type loading vehicle structure, characterized in that: The system includes a carrier (I) and two sets of lifting devices. The two sets of lifting devices are symmetrically arranged on the carrier (I). Each lifting device includes a telescopic arm (1), a pull arm (5), and a linkage frame (3). The pull arm (5) is connected to the telescopic arm (1) through a sliding joint and to the telescopic arm (1) through a telescopic drive component (6). The middle part of the pull arm (5) is movably connected to the chassis of the carrier (I) through an erection drive component (2). The middle part of the linkage frame (3) is connected to the end of the pull arm (5) away from the telescopic arm (1) through a rotating joint. A locking mechanism (4) is provided between the linkage frame (3) and the pull arm (5). The linkage frame (3) is connected to the rear end of the chassis of the carrier (I) through a rotating joint. The telescopic arm (1) is L-shaped, and a slot is provided at one end of the telescopic arm (1) away from the pull arm (5); the linkage frame (3) is L-shaped, and a roller A is connected to the position of the linkage frame (3) away from the telescopic arm (1) through the rotating shaft A (30); The pull arm (5) is F-shaped, and the elevation of the connection point between the pull arm (5) and the erection drive component (2) is greater than the elevation of the connection point between the pull arm (5) and the linkage frame (3) is greater than the elevation of the connection point between the linkage frame (3) and the chassis of the vehicle (Ⅰ). The locking mechanism (4) includes a rotary drive motor, a rotating shaft B and an L-shaped locking frame. The rotary drive motor is mounted on the linkage frame (3), and the rotating shaft B is mounted on the linkage frame (3) through a base. One end of the rotating shaft B is connected to the output shaft of the rotary drive motor, and the other end is fixedly connected to the L-shaped locking frame. A locking block is provided on the pull arm (5) at a position corresponding to the L-shaped locking frame. It also includes a support frame (Ⅲ), on which several special equipment (Ⅱ) are placed. The top of the support frame (Ⅲ) is equipped with a hook ring, and one end of the bottom is equipped with a roller B.

2. The lifting-type loading vehicle structure as described in claim 1, characterized in that: Both the erection drive (2) and the telescopic drive (6) are electric cylinders.

3. A method of using the lifting-type loading vehicle structure as described in claim 1 or 2, characterized in that: Includes the following steps: A. Equipment loading: Place the support frame (III) containing the special equipment (II) on the ground directly behind the vehicle (I), control the lifting device to extend backward until the latch on the telescopic arm (1) engages with the hook on the support frame (III), control the lifting device to reset, and load the support frame (III) and the special equipment (II) onto the vehicle (I); B. Equipment erection: Control the lifting device to drive the support frame (Ⅲ) and special equipment (Ⅱ) to rotate upward, so that the support frame (Ⅲ) and special equipment (Ⅱ) are gradually erected and the rear end of special equipment (Ⅱ) is placed on the ground; C. Equipment unloading: Control the lifting device to unload the support frame (Ⅲ) and special equipment (Ⅱ) onto the ground behind the carrier (Ⅰ).

4. The method of using the lifting-type loading vehicle structure as described in claim 3, characterized in that: The loading method of the equipment in step A includes the following steps: a. Control the telescopic drive component (6) to shorten, drive the telescopic arm (1) to move relative to the pull arm (5) towards the rear end of the vehicle (Ⅰ), and make the rotating pair connecting the linkage frame (3) and the pull arm (5) fail through the locking mechanism (4); b. Control the extension of the erection drive component (2) to drive the telescopic arm (1), the pull arm (5) and the linkage frame (3) to rotate upward at a certain angle around the rotating joint connecting the linkage frame (3) and the chassis of the vehicle (Ⅰ); c. The locking mechanism (4) activates the rotating joint connecting the linkage frame (3) and the pull arm (5), and the erection drive (2) drives the telescopic arm (1) and the pull arm (5) to continue rotating around the rotating joint connecting the pull arm (5) and the linkage frame (3) towards the rear of the vehicle (Ⅰ) until the bayonet on the telescopic arm (1) is connected to the hook on the support frame (Ⅲ); d. Control the shortening of the erection drive component (2), drive the telescopic arm (1), linkage frame (3) and pull arm (5) to rotate towards the chassis of the vehicle (I). When the support frame (III) moves to the chassis of the vehicle (I) and is parallel to the chassis of the vehicle (I), the locking mechanism (4) causes the rotating pair between the linkage frame (3) and the pull arm (5) to fail. e. Control the extension drive component (6) to extend, drive the telescopic arm (1) to move the support frame (Ⅲ) towards the front of the vehicle (Ⅰ) to complete the equipment loading.

5. The method of using the lifting-type loading vehicle structure as described in claim 3, characterized in that: The method for erecting the equipment in step B includes the following steps: a. The rotating joint connecting the linkage frame (3) and the pull arm (5) is rendered ineffective by the locking mechanism (4); b. Control the extension of the erection drive component (2) to drive the telescopic arm (1), linkage frame (3), pull arm (5), special equipment (II) and support frame (III) to rotate upward to the required angle around the rotating joint connecting the linkage frame (3) and the chassis of the vehicle (I); c. Control the telescopic drive component (6) to shorten, causing the telescopic arm (1), special equipment (II) and support frame (III) to move down until the special equipment (II) lands, thus completing the erection.

6. The method of using the lifting-type loading vehicle structure as described in claim 3, characterized in that: The device unloading method in step C includes the following steps: a. Control the telescopic drive component (6) to shorten, causing the telescopic arm (1) to move the special equipment (II) and support frame (III) backward; b. The rotating joint connecting the linkage frame (3) and the pull arm (5) is activated by the locking mechanism (4); c. Control the extension of the erection drive component (2) to drive the telescopic arm (1), linkage frame (3), pull arm (5), special equipment (II) and support frame (III) to rotate behind the vehicle (I) until the support frame (III) containing the special equipment (II) is unloaded onto the ground.

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