Movable hydraulic supporting structure for engineering truck

Abstract

The invention discloses a movable hydraulic supporting structure for an engineering truck, and relates to the technical field of crane supporting. Comprising a telescopic transverse moving part, a vertical telescopic part is installed on the telescopic transverse moving part, and the vertical telescopic part is used for supporting a crane in a telescopic mode; a horizontal supporting leg part is mounted on the vertical telescopic part; the vertical telescopic part is used for controlling the horizontal supporting of the horizontal supporting foot part; an anti-damage limiting part is mounted on the telescopic transverse moving part; the anti-damage limiting part is used for preventing the vertical telescopic part from being recycled in advance; the vertical telescopic part can be used for detecting the horizontal state of the ball sleeve, it is guaranteed that the sliding supporting foot disc can be supported on the ground or a sleeper in the horizontal state, the supporting stability of the structure can be guaranteed, and the problem of unstable supporting such as slipping caused by inclination of the sliding supporting foot disc is solved. The problems that according to an existing hydraulic supporting structure, a transverse moving part is directly recycled, irreversible damage and even breaking are easily caused to a vertical supporting hydraulic cylinder, and automatic safety limiting is inconvenient are solved.

Description

Technical Field

[0001] The invention relates to the technical field of crane support, in particular to a movable hydraulic support structure for an engineering vehicle. Background Art

[0002] The crane support leg is a supporting device installed on the chassis or underframe of the crane, including a transverse moving part and a vertical supporting part. The crane is usually equipped with four legs, which are separated from each other front, back, left and right. These legs can move simultaneously or retract independently. The workplace is usually tilted and uneven, and the ground is relatively soft. Therefore, it is necessary to place sleepers under the support leg plate to increase stability. The main function of the crane support leg is to increase the supporting base of the crane, reduce the burden on the tires, and improve the anti-overturning stability of the whole vehicle. The current hydraulic support structure mainly controls the lateral extension and vertical support manually. During the recovery work, it is easy to shrink the transverse structure before the vertical support is recovered. The friction between the hydraulic cylinder of the vertical support and the ground is large. Direct recovery of the transverse moving part is easy to cause irreversible damage or even breakage to the vertical support hydraulic cylinder, which is not convenient for automatic safety limit, and it is also not convenient for tilt counterweight compensation. The crane has poor stability. At the same time, the support leg plate should maintain horizontal support during actual use. The staff is prone to directly support on the ground due to negligence and other factors. Later, safety accidents caused by the skew of the support leg plate are not easy to control the support conditions to avoid skewed support of the support leg plate.

[0003] To this end, we propose a movable hydraulic support structure for engineering vehicles. Summary of the invention

[0004] The purpose of the present invention is to provide a movable hydraulic support structure for engineering vehicles to solve the problem proposed in the above background technology that the current hydraulic support structure directly recovers the lateral movement part, which is easy to cause irreversible damage or even breakage to the vertical support hydraulic cylinder, is not convenient for automatic safety limiting, and is not convenient for controlling the support conditions to avoid skewed support of the support plate.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a movable hydraulic support structure for an engineering vehicle, comprising a telescopic transverse portion, a vertical telescopic portion being installed on the telescopic transverse portion, and the vertical telescopic portion being used for telescopically supporting a crane; a horizontal support leg portion being installed on the vertical telescopic portion; the vertical telescopic portion being used for controlling the horizontal support of the horizontal support leg portion; an anti-damage limit portion being installed on the telescopic transverse portion; the anti-damage limit portion being used for preventing the vertical telescopic portion from being recovered prematurely; an in-place detection member being installed on the vertical telescopic portion, and the in-place detection member being electrically connected to the anti-damage limit portion; an inclination detection member being installed on the vertical telescopic portion; a counterweight compensation member being installed on the telescopic transverse portion; the counterweight compensation member being used for sliding on the telescopic transverse portion; the telescopic transverse portion comprising: a telescopic boom and a boom hydraulic cylinder, a boom hydraulic cylinder being fixedly installed inside the telescopic boom; the telescopic boom being used for being installed on a crane frame; a row of positioning grooves being provided on the inner top of the telescopic boom.

[0006] Preferably, the telescopic transverse movement part also includes: a forearm and a safety threaded rod, the forearm is slidably mounted on the telescopic boom; the end of the forearm is threadedly connected with the safety threaded rod; the forearm is fixedly mounted on the output shaft of the boom hydraulic cylinder; the forearm is used to move on the telescopic boom.

[0007] Preferably, the vertical telescopic part includes: a vertical hydraulic cylinder, a ball head, a ball sleeve, a support plate, a contact spring, a sliding contact head and an annular power connection ring. The vertical hydraulic cylinder is fixedly installed on the end of the forearm; a ball head is fixedly installed on the output shaft of the vertical hydraulic cylinder; a ball sleeve is sleeved on the ball head; a support plate is fixedly installed on the bottom of the ball sleeve; a contact spring is sleeved inside the ball head; four sliding contact heads are slidably inserted on the ball head; the end of the sliding contact head is an arc structure; four contact springs are provided, and the four contact springs are respectively connected between the four sliding contact heads and the ball head; an annular power connection ring is fixedly embedded in the ball sleeve, and the annular power connection ring is an annular structure; when the ball sleeve is in a horizontal state, the four sliding contact heads fit the annular power connection ring; the four sliding contact heads, the annular power connection ring and the control valve of the vertical hydraulic cylinder are connected in series with a power supply.

[0008] Preferably, the horizontal support foot portion includes: a sliding support foot plate and a connecting spring, the interior of the sliding support foot plate is a cavity structure; the sliding support foot plate is slidably sleeved on the support plate; a circle of connecting springs is fixedly installed on the sliding support foot plate, and the ends of the circle of connecting springs are respectively connected to the ball sleeve.

[0009] Preferably, the anti-damage limit part includes: a limit slider and an electromagnet, the limit slider is slidably installed on the forearm; a row of limit protruding teeth is provided on the top of the limit slider; the protruding teeth on the top of the limit slider are used to insert into the positioning groove provided on the top of the inner side of the telescopic arm; the two ends of the limit slider are iron structures; two electromagnets are fixedly installed on the forearm, and the two electromagnets are respectively aligned with the two ends of the limit slider; the two electromagnets are respectively used to magnetically attract the limit slider.

[0010] Preferably, the damage-preventing limiting part further comprises: a retraction spring, the limiting slider is sleeved with the retraction spring, and the end of the retraction spring is connected to the inner side of the limiting slider; the other end of the retraction spring is fixedly mounted on the forearm.

[0011] Preferably, the in-place detection component includes: an in-place sliding column, a micro switch and a compression spring, the in-place sliding column is slidably installed at the bottom of the ball sleeve; the in-place sliding column is fixedly installed with a micro switch on the top; the micro switch is used to squeeze and fit the bottom of the ball sleeve; the in-place sliding column is fixedly installed with a compression spring on the top, and the end of the compression spring is connected to the bottom of the ball sleeve; the sliding support plate is used to squeeze the in-place sliding column upward; the micro switch is electrically connected to two electromagnets.

[0012] Preferably, the tilt detection component includes: a guide ring, a lifting connection shell and a tilt switch, the guide ring is fixedly sleeved on the output shaft of the vertical hydraulic cylinder; the lifting connection shell is slidably sleeved on the outer side of the guide ring; the tilt switch is fixedly installed on the bottom of the guide ring, and the tilt switch is located on the inner side of the lifting connection shell; the lifting connection shell is used to move upward to squeeze the tilt switch.

[0013] Preferably, the tilt detection member further includes: a reset spring, an end of which is connected to the guide ring; the other end of the reset spring is fixedly mounted on the upper part of the lifting connection shell; and the reset spring is located on the inner side of the lifting connection shell.

[0014] Preferably, the counterweight compensation component includes: a counterweight sliding block, a counterweight hydraulic cylinder and a counterweight block, the counterweight sliding block is slidably installed at the bottom of the telescopic boom; a counterweight hydraulic cylinder is fixedly installed on the counterweight sliding block, and the output shaft of the counterweight hydraulic cylinder is fixedly installed at the bottom of the telescopic boom; three counterweight blocks are fixedly installed at the bottom of the counterweight sliding block by bolts; the tilt switch is electrically connected to the oil circuit control valve of the counterweight hydraulic cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts a vertical telescopic part to detect the horizontal state of the ball sleeve, ensuring that the sliding support plate can maintain a horizontal state and support on the ground or sleepers, thereby ensuring the support stability of the structure, avoiding the problem of unstable support such as slipping caused by the skewness of the sliding support plate, and ensuring that the vertical hydraulic cylinder can control the control valve of the vertical hydraulic cylinder only when the ball sleeve is detected to be in a horizontal state, ensuring that the vertical hydraulic cylinder can be controlled to support the vehicle only after the support conditions are met, thereby ensuring the safety of the structure and avoiding illegal operations by staff.

[0016] By adopting the anti-damage limit part in conjunction with the detection part, it can automatically detect when the vertical hydraulic cylinder supports the vehicle and lock the forearm, so as to perform safety insurance control on the vertical hydraulic cylinder to avoid the vertical hydraulic cylinder that has been supported on the ground. If the forearm is not recovered, the forearm will be directly recovered. Because under the support of the vertical hydraulic cylinder, the sliding support plate rubs against the ground, as the forearm is recovered, the output shaft of the vertical hydraulic cylinder is prone to breakage and other hidden dangers, and even accidental injury to the staff.

[0017] The counterweight compensation piece can be used in conjunction with the tilt detection piece to realize real-time detection of the support stability of the structure, reducing the risk of vehicle rollover caused by excessive weight when the crane is lifting heavy objects. At the same time, the detection of the structure is direct and reliable, and the counterweight adjustment work can be carried out using the counterweight compensation piece. When an offset occurs, the counterweight can be automatically controlled to be applied in the opposite direction, thereby improving the safety of the crane. By controlling the movement of the counterweight block and utilizing the principle of leverage, the downward pressure of the counterweight can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a movable hydraulic support structure for an engineering vehicle of the present invention; Figure 2 This is a cross-sectional view of the internal structure of a movable hydraulic support structure for an engineering vehicle of the present invention; Figure 3 It is a schematic diagram of the structure of the telescopic transverse shifting part of the present invention; Figure 4 It is a schematic diagram of the structure of the vertical telescopic part of the present invention; Figure 5 For the present invention Figure 4 A magnified view of the structure of the middle D region; Figure 6 For the present invention Figure 2 A magnified view of the structure of the middle E region; Figure 7 For the present invention Figure 2 A magnified view of the structure of the middle F region; Figure 8 For the present invention Figure 2 A magnified view of the structure of the middle G region; Fig. 9 It is a schematic diagram of the bottom structure of the counterweight compensation member of the present invention.

[0019] In the figure: 1, telescopic lateral part; 101, telescopic boom; 102, boom hydraulic cylinder; 103, forearm; 104, safety threaded rod; 2, vertical telescopic part; 201, vertical hydraulic cylinder; 2011, ball head; 202, ball sleeve; 203, support plate; 204, contact spring; 205, sliding contact head; 206, annular contact ring; 3, horizontal support foot; 301, sliding support foot plate; 302, connecting spring; 4, safety screw rod; Damage limit part; 401, limit slider; 402, electromagnet; 403, retraction spring; 5, in-place detection part; 501, in-place sliding column; 502, micro switch; 503, compression spring; 6, tilt detection part; 601, guide ring; 602, lifting connection shell; 603, tilt switch; 604, reset spring; 7, counterweight compensation part; 701, counterweight sliding block; 702, counterweight hydraulic cylinder; 703, counterweight block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 9 As shown: The present invention provides a technical solution: a movable hydraulic support structure for an engineering vehicle, comprising a telescopic transverse portion 1, a vertical telescopic portion 2 is installed on the telescopic transverse portion 1, and the vertical telescopic portion 2 is used to telescopically support a crane; a horizontal support leg portion 3 is installed on the vertical telescopic portion 2; the vertical telescopic portion 2 is used to control the horizontal support of the horizontal support leg portion 3; an anti-damage limiter portion 4 is installed on the telescopic transverse portion 1; the anti-damage limiter portion 4 is used to prevent the vertical telescopic portion 2 from being recovered in advance; an in-place detection device is installed on the vertical telescopic portion 2 Part 5, and the in-place detection part 5 is electrically connected to the anti-damage limit part 4; a tilt detection part 6 is installed on the vertical telescopic part 2; a counterweight compensation part 7 is installed on the telescopic transverse part 1; the counterweight compensation part 7 is used to slide on the telescopic transverse part 1; the telescopic transverse part 1 comprises: a telescopic boom 101 and a boom hydraulic cylinder 102, a boom hydraulic cylinder 102 is fixedly installed inside the telescopic boom 101; the telescopic boom 101 is used to be installed on the crane frame; a row of positioning grooves is provided on the inner top of the telescopic boom 101.

[0022] The telescopic lateral shifting part 1 further comprises: a small arm 103 and a safety threaded rod 104, the small arm 103 is slidably mounted on the telescopic boom 101; the safety threaded rod 104 is threadedly connected to the end of the small arm 103; the small arm 103 is fixedly mounted on the output shaft of the boom hydraulic cylinder 102; the small arm 103 is used to move on the telescopic boom 101; the vertical telescopic part 2 comprises: a vertical hydraulic cylinder 201, a ball head 2011, a ball sleeve 202, a support plate 203, a contact spring 204, a sliding contact head 205 and an annular contact ring 206, the vertical hydraulic cylinder 201 is fixedly mounted on the end of the small arm 103; the ball head 2011 is fixedly mounted on the output shaft of the vertical hydraulic cylinder 201; the ball sleeve 202 is sleeved on the ball head 2011; A support plate 203 is fixedly installed at the bottom of the sleeve 202; a contact spring 204 is sleeved inside the ball head 2011; four sliding contacts 205 are slidably inserted on the ball head 2011; the end of the sliding contact 205 is an arc-shaped structure; four contact springs 204 are provided, and the four contact springs 204 are respectively connected between the four sliding contacts 205 and the ball head 2011; an annular contact ring 206 is fixedly embedded inside the ball sleeve 202, and the annular contact ring 206 is an annular structure; when the ball sleeve 202 is in a horizontal state, the four sliding contacts 205 fit the annular contact ring 206; the four sliding contacts 205, the annular contact ring 206 and the control valve of the vertical hydraulic cylinder 201 are connected in series with a power supply, and the vertical telescopic part 2 can be used It is used to detect the horizontal state of the ball sleeve 202, ensuring that the sliding foot plate 301 can maintain a horizontal state and support on the ground or sleepers, which can ensure the support stability of the structure and avoid the problem of unstable support such as slipping caused by the tilt of the sliding foot plate 301. The structure uses the sliding contact head 205, the annular contact ring 206 and the control valve of the vertical hydraulic cylinder 201 to connect the power supply in series, which can ensure that the vertical hydraulic cylinder 201 can control the control valve of the vertical hydraulic cylinder 201 only when the ball sleeve 202 is detected to be in a horizontal state. The vertical hydraulic cylinder 201 cannot be controlled to extend or retract when the control valve is in an open circuit state. The structure can perform real-time detection to ensure that the vertical hydraulic cylinder 201 can be controlled to support the vehicle only after the support conditions are met, which can ensure the safety of the structure. At the same time, it can avoid illegal operations by staff, ensure stable and smooth lifting work, control the vertical hydraulic cylinder 201 to extend, drive the ball sleeve 202 and the support plate 203 to move down, at this time the sliding support plate 301 can be in contact with the ground or sleepers for support, once the ground or sleepers are tilted beyond the standard, the bottom of the sliding support plate 301 is in contact with the ground, and the ball sleeve 202 can be rotated on the ball head 2011 for adaptation. At this time, the ball sleeve 202 will drive the annular power ring 206 to rotate and be misaligned with the sliding contact head 205. At this time, the vertical hydraulic cylinder 201 cannot be controlled to continue to extend, and the ground or sleepers need to be leveled to restore the control of the vertical hydraulic cylinder 201. The safety threaded rod 104 can be rotated to adjust the height, which can play the role of backup support.

[0023] Among them, the horizontal support foot part 3 includes: a sliding support foot plate 301 and a connecting spring 302, the interior of the sliding support foot plate 301 is a cavity structure; the sliding support foot plate 301 is slidably sleeved on the support plate 203; a circle of connecting springs 302 is fixedly installed on the sliding support foot plate 301, and the ends of the circle of connecting springs 302 are respectively connected to the ball sleeve 202. The horizontal support foot part 3 can be used in conjunction with the support plate 203 to achieve stable support on the ground. At the same time, the sliding support foot plate 301 can be raised and lowered on the support plate 203 to facilitate subsequent support detection. At the same time, the horizontal support foot part 3 can play the role of a counterweight to ensure that the sliding support foot plate 301 is in a horizontal state as a whole under a natural state.

[0024] Among them, the damage-preventing limit part 4 includes: a limit slider 401 and an electromagnet 402. The limit slider 401 is slidably installed on the small arm 103; a row of limit protruding teeth are provided on the top of the limit slider 401; the protruding teeth on the top of the limit slider 401 are used to insert into the positioning groove provided on the top of the inner side of the telescopic big arm 101; the two ends of the limit slider 401 are iron structures; two electromagnets 402 are fixedly installed on the small arm 103, and the two electromagnets 402 are respectively aligned with the two ends of the limit slider 401; the two electromagnets 402 are respectively used to magnetically attract the limit slider 401; the damage-preventing limit part 4 also includes: a retraction spring 403, a retraction spring 403 is sleeved inside the limit slider 401, and the end of the retraction spring 403 is connected to the inner side of the limit slider 401; the other end of the retraction spring 403 is fixedly installed on the forearm 103; the in-position detection member 5 includes: an in-position sliding column 501, a micro switch 502 and a compression spring 503, the in-position sliding column 501 is slidably installed at the bottom of the ball sleeve 202; the micro switch 502 is fixedly installed on the top of the in-position sliding column 501; the micro switch 502 is used to squeeze and fit the bottom of the ball sleeve 202; the compression spring 503 is fixedly installed on the top of the in-position sliding column 501, and the compression spring 503 The end of 03 is connected to the bottom of the ball sleeve 202; the sliding foot plate 301 is used to squeeze the sliding column 501 in place to move up; the micro switch 502 is electrically connected to the two electromagnets 402, and the anti-damage limiter 4 is used to cooperate with the detection part 5 in place, which can automatically detect that when the vertical hydraulic cylinder 201 supports the vehicle, the small arm 103 is locked, and the vertical hydraulic cylinder 201 can be controlled for safety insurance to avoid the vertical hydraulic cylinder 201 that has been supported on the ground. If it is not recovered, the small arm 103 is directly recovered, because under the support of the vertical hydraulic cylinder 201, the sliding foot plate 301 rubs against the ground, and When the small arm 103 is recovered, the output shaft of the vertical hydraulic cylinder 201 is prone to breakage and other hidden dangers, and even causes accidental injury to the staff. When the vertical hydraulic cylinder 201 drives the sliding support plate 301 to move down and fit the ground, the support plate 203 presses down the sliding column 501, thereby squeezing the micro switch 502. At this time, the micro switch 502 can control the two electromagnets 402 to electromagnetically attract the limit slider 401. At this time, the limit slider 401 can lengthen the retraction spring 403, and at the same time, the raised tooth on the top of the limit slider 401 is inserted into the positioning groove provided on the inner top of the telescopic large arm 101 for limiting.

[0025] Embodiment 2, on the basis of embodiment 1, the tilt detection member 6 comprises: a guide ring 601, a lifting connection shell 602 and a tilt switch 603, the guide ring 601 is fixedly sleeved on the output shaft of the vertical hydraulic cylinder 201; the lifting connection shell 602 is slidably sleeved on the outer side of the guide ring 601; the tilt switch 603 is fixedly installed on the bottom of the guide ring 601, and the tilt switch 603 is located on the inner side of the lifting connection shell 602; the lifting connection shell 602 is used to move upward to squeeze the tilt switch 603; the tilt detection member 6 also comprises: a reset tension spring 60 4. The end of the reset spring 604 is connected to the guide ring 601; the other end of the reset spring 604 is fixedly installed on the upper part of the lifting connection shell 602; the reset spring 604 is located on the inner side of the lifting connection shell 602; the counterweight compensation component 7 includes: a counterweight sliding block 701, a counterweight hydraulic cylinder 702 and a counterweight block 703, the counterweight sliding block 701 is slidably installed at the bottom of the telescopic boom 101; the counterweight hydraulic cylinder 702 is fixedly installed on the counterweight sliding block 701, and the output shaft of the counterweight hydraulic cylinder 702 is fixedly installed at the bottom of the telescopic boom 101; Three counterweight blocks 703 are fixedly installed at the bottom of the counterweight sliding block 701 by bolts; the tilt switch 603 is electrically connected to the oil circuit control valve of the counterweight hydraulic cylinder 702, and the counterweight compensation part 7 can be used in conjunction with the tilt detection part 6 to realize real-time detection of the support stability of the structure, thereby reducing the risk of vehicle rollover caused by excessive weight when the crane is hanging heavy objects. At the same time, the detection of the structure is direct and reliable, and the counterweight adjustment work can be carried out by using the counterweight compensation part 7. When an offset occurs, the counterweight can be automatically controlled to be applied in the reverse direction, thereby improving the safety of the crane. The method of controlling the movement of the counterweight block 703 utilizes the principle of leverage to increase the downward pressure of the counterweight. When the boom lifts the cargo opposite to the counterweight sliding block 701, when the cargo is too heavy and the vehicle tilts, the ball sleeve 202 can rotate on the ball head 2011 to adapt to the tilt. At this time, the tilt switch 603 can be squeezed, which can control the counterweight hydraulic cylinder 702 to start, drive the counterweight sliding block 701 to drive the counterweight block 703 to move further away from the position supported by the sliding support leg plate 301, and move toward the outside of the vehicle to increase the downward pressure of the counterweight and promote vehicle balance.

[0026] The working principle of this embodiment is as follows: first, the telescopic boom 101 is welded to the vehicle, and the boom hydraulic cylinder 102 can drive the forearm 103 to extend. When the ball sleeve 202 and the support plate 203 are in a natural state, the ball sleeve 202 and the support plate 203 remain horizontal. At this time, the sliding contact head 205 fits the annular contact ring 206, and the vertical hydraulic cylinder 201 can be controlled to extend, driving the ball sleeve 202 and the support plate 203 to move downward. At this time, the sliding support plate 301 can fit the ground or sleepers for support. Once the ground or sleepers are tilted beyond the standard, the bottom of the sliding support plate 301 fits the ground, and the ball sleeve 202 can be at the ball head 2 011 is rotated to adapt, at this time, the ball sleeve 202 will drive the annular contact ring 206 to rotate, and no longer fit the four sliding contacts 205 at the same time. When misalignment occurs, the circuit is disconnected, and the control valve of the vertical hydraulic cylinder 201 cannot complete the control of the hydraulic oil in the disconnected state. At this time, the vertical hydraulic cylinder 201 cannot be controlled to continue to extend, and the ground or sleepers need to be leveled to restore the control of the vertical hydraulic cylinder 201. The safety threaded rod 104 can be rotated to adjust the height, so that its bottom can maintain a certain distance from the sliding support plate 301, which does not affect the rotation of the sliding support plate 301 and the ball sleeve 202. Once the vertical hydraulic cylinder 2 01 fails, it can play the role of backup support, when the vertical hydraulic cylinder 201 drives the sliding foot plate 301 to move down and fit to the ground, the support plate 203 presses down the sliding column 501, thereby squeezing the micro switch 502. At this time, the micro switch 502 can control the two electromagnets 402 to pass the electromagnetic suction limit slider 401, and the limit slider 401 can stretch the retraction spring 403. At the same time, the raised tooth on the top of the limit slider 401 is inserted into the positioning groove on the top of the inner side of the telescopic big arm 101 for limiting, ensuring that when the small arm 103 is recovered in the subsequent operation, it will be stuck by the limit slider 401 to avoid damage. The vertical hydraulic cylinder 201 is injured. When the boom lifts the cargo in the direction opposite to the counterweight sliding block 701, when the cargo is too heavy and the vehicle tilts, the sliding support plate 301 is still supported on the flat ground. At this time, the ball sleeve 202 can rotate on the ball head 2011 to adapt to the tilt. At this time, the top edge of the ball sleeve 202 will squeeze the lifting connection shell 602 during the rotation, and the reset tension spring 604 will be stretched. At this time, the tilt switch 603 can be squeezed, and the counterweight hydraulic cylinder 702 can be controlled to start, driving the counterweight sliding block 701 to drive the counterweight block 703 to move further away from the position supported by the sliding support plate 301 for balance compensation.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A movable hydraulic support structure for an engineering vehicle, comprising a telescopic transverse portion (1), a vertical telescopic portion (2) being mounted on the telescopic transverse portion (1), characterized in that: The vertical telescopic part (2) is used to telescopically support the crane; a horizontal support foot (3) is installed on the vertical telescopic part (2); the vertical telescopic part (2) is used to control the horizontal support foot (3) to support horizontally; An anti-damage limiter (4) is installed on the telescopic transverse portion (1); the anti-damage limiter (4) is used to prevent the vertical telescopic portion (2) from being retracted prematurely; The vertical telescopic portion (2) is provided with an in-place detection member (5), and the in-place detection member (5) is electrically connected to the anti-damage limiting portion (4); The vertical telescopic portion (2) is provided with a tilt detection member (6); the telescopic transverse portion (1) is provided with a counterweight compensation member (7); the counterweight compensation member (7) is used to slide on the telescopic transverse portion (1); The telescopic transverse moving part (1) comprises: a telescopic boom (101) and a boom hydraulic cylinder (102); the boom hydraulic cylinder (102) is fixedly installed inside the telescopic boom (101); the telescopic boom (101) is used to be installed on a crane frame; and a row of positioning grooves is provided on the top of the inner side of the telescopic boom (101).

2. The movable hydraulic support structure for an engineering vehicle according to claim 1, characterized in that: The telescopic transverse moving part (1) further comprises: a small arm (103) and a safety threaded rod (104); the small arm (103) is slidably mounted on the telescopic boom (101); the end of the small arm (103) is threadedly connected to the safety threaded rod (104); the small arm (103) is fixedly mounted on the output shaft of the boom hydraulic cylinder (102); and the small arm (103) is used to move on the telescopic boom (101).

3. The movable hydraulic support structure for an engineering vehicle according to claim 2, characterized in that: The vertical telescopic part (2) comprises: a vertical hydraulic cylinder (201), a ball head (2011), a ball sleeve (202), a support plate (203), a contact spring (204), a sliding contact head (205) and an annular contact ring (206); the vertical hydraulic cylinder (201) is fixedly mounted on the end of the forearm (103); the ball head (2011) is fixedly mounted on the output shaft of the vertical hydraulic cylinder (201); the ball sleeve (202) is sleeved on the ball head (2011); the support plate (203) is fixedly mounted on the bottom of the ball sleeve (202); the contact spring (204) is sleeved inside the ball head (2011); the sliding contact head (205) is mounted on the ball head (2011); the contact spring (204) is sleeved on the ball head (2011); the sliding contact head (205) is mounted ... The invention relates to a ball sleeve (202) having four sliding contact heads (205) which are dynamically plugged in; the end of the sliding contact head (205) is an arc-shaped structure; four contact springs (204) are provided, and the four contact springs (204) are respectively connected between the four sliding contact heads (205) and the ball head (2011); an annular contact ring (206) is fixedly embedded inside the ball sleeve (202), and the annular contact ring (206) is an annular structure; when the ball sleeve (202) is in a horizontal state, the four sliding contact heads (205) fit the annular contact ring (206); and the four sliding contact heads (205), the annular contact ring (206) and the control valve of the vertical hydraulic cylinder (201) are connected in series to a power supply.

4. The movable hydraulic support structure for an engineering vehicle according to claim 3, characterized in that: The horizontal support foot portion (3) comprises: a sliding support foot plate (301) and a connecting spring (302); the interior of the sliding support foot plate (301) is a cavity structure; the sliding support foot plate (301) is slidably sleeved on the support plate (203); a circle of connecting springs (302) is fixedly mounted on the sliding support foot plate (301), and the ends of the circle of connecting springs (302) are respectively connected to the ball sleeves (202).

5. The movable hydraulic support structure for an engineering vehicle according to claim 3, characterized in that: The damage-preventing limit portion (4) comprises: a limit slider (401) and an electromagnet (402); the limit slider (401) is slidably mounted on the forearm (103); a row of limit protruding teeth are arranged on the top of the limit slider (401); the protruding teeth on the top of the limit slider (401) are used to be inserted into a positioning groove arranged on the top of the inner side of the telescopic arm (101); both ends of the limit slider (401) are iron structures; two electromagnets (402) are fixedly mounted on the forearm (103), and the two electromagnets (402) are respectively aligned with the two ends of the limit slider (401); the two electromagnets (402) are respectively used to magnetically attract the limit slider (401).

6. The movable hydraulic support structure for an engineering vehicle according to claim 5, characterized in that: The damage-preventing limiting portion (4) further comprises: a retraction spring (403); the limiting slider (401) is sleeved with the retraction spring (403), and the end of the retraction spring (403) is connected to the inner side of the limiting slider (401); the other end of the retraction spring (403) is fixedly mounted on the forearm (103).

7. The movable hydraulic support structure for an engineering vehicle according to claim 5, characterized in that: The in-place detection component (5) comprises: an in-place sliding column (501), a micro switch (502) and a compression spring (503); the in-place sliding column (501) is slidably mounted on the bottom of the ball sleeve (202); the micro switch (502) is fixedly mounted on the top of the in-place sliding column (501); the micro switch (502) is used to press and fit the bottom of the ball sleeve (202); the compression spring (503) is fixedly mounted on the top of the in-place sliding column (501), and the end of the compression spring (503) is connected to the bottom of the ball sleeve (202); the sliding support plate (301) is used to press the in-place sliding column (501) to move upward; and the micro switch (502) is electrically connected to two electromagnets (402).

8. The movable hydraulic support structure for an engineering vehicle according to claim 3, characterized in that: The tilt detection member (6) comprises: a guide ring (601), a lifting connection shell (602) and a tilt switch (603); the guide ring (601) is fixedly sleeved on the output shaft of the vertical hydraulic cylinder (201); the lifting connection shell (602) is slidably sleeved on the outer side of the guide ring (601); the tilt switch (603) is fixedly mounted on the bottom of the guide ring (601), and the tilt switch (603) is located on the inner side of the lifting connection shell (602); the lifting connection shell (602) is used to move upward to squeeze the tilt switch (603).

9. The movable hydraulic support structure for an engineering vehicle according to claim 8, characterized in that: The tilt detection member (6) further comprises: a reset spring (604), the end of which is connected to the guide ring (601); the other end of which is fixedly mounted on the upper part of the lifting connection shell (602); and the reset spring (604) is located on the inner side of the lifting connection shell (602).

10. The movable hydraulic support structure for an engineering vehicle according to claim 9, characterized in that: The counterweight compensation component (7) comprises: a counterweight sliding block (701), a counterweight hydraulic cylinder (702) and a counterweight block (703); the counterweight sliding block (701) is slidably mounted on the bottom of the telescopic boom (101); the counterweight hydraulic cylinder (702) is fixedly mounted on the counterweight sliding block (701), and the output shaft of the counterweight hydraulic cylinder (702) is fixedly mounted on the bottom of the telescopic boom (101); three counterweight blocks (703) are fixedly mounted on the bottom of the counterweight sliding block (701) by bolts; and the tilt switch (603) is electrically connected to the oil circuit control valve of the counterweight hydraulic cylinder (702).

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