Backward tilting prevention crane

Abstract

The present application relates to a kind of anti-back tilting cranes, comprising: fixedly installed in the middle position of mobile car roof control room;Fixedly installed in the left edge position of mobile car roof sliding sleeve shell one;Counterweight is slidably connected on the inside wall surface of sliding sleeve shell one;Threaded slot is opened in the top surface of counterweight and located in the edge position on both sides;The top outside surface of sliding sleeve shell one is slidably connected with bidirectional sliding unit.The motor two on the both ends of sliding sleeve shell two is rotated to the push pawl disc, and the two push pawl discs are connected in different interiors, so that it slides on the inside wall surface of transmission rail, when push pawl disc is rotated, the fitting plate on the side surface of swing arm is fitted to the vertical surface, increase the fitting force, and swing arm is supported on the vertical surface extruded with more horizontal angle, under the rotation of push pawl disc.

Description

Technical Field

[0001] This invention relates to the field of anti-tilting support technology, and in particular to an anti-tilting crane. Background Technology

[0002] The boom of a luffing tower crane can be luffed from a horizontal position to a near-vertical position. The amplitude is greatest when the boom is horizontal and smallest when the boom is near the vertical position. During operation, due to the effects of inertial load and wind load, the boom may experience a relatively strong impact with the top of the tower or tilt backward during the luffing process.

[0003] In the prior art, patent document CN115057378A discloses an anti-tilting device for tower cranes, relating to the field of crane accessories technology. It includes a lifting assembly, an adjusting assembly, a driving assembly, and a monitoring assembly. An adjusting assembly is located on one side of the lifting assembly, a driving assembly is located at one end of the adjusting assembly, and a monitoring assembly is located above the lifting assembly. This invention, by configuring a lifting assembly, allows the boom within the lifting assembly to perform lifting operations. An adjusting assembly is located on one side of the lifting assembly, containing a sliding movable plate. Below the movable plate is a movable counterweight. When the boom lifts goods, the angle of the boom changes. At this time, the movable plate drives the movable counterweight to move, making the lever arm formed by the movable counterweight and the boom equal, thereby ensuring that the force on the boom remains balanced, thus reducing the risk of the tower crane tilting backward.

[0004] The existing technology has the following problems: When a crane lifts a heavy object, the support arm needs to be extended to one end. During this process, the crane's center of gravity will shift towards the end of the object being lifted. Therefore, a counterweight needs to be installed in the opposite direction of the crane to adjust its level. However, once the object is removed from the crane, the crane's gravity balance is disrupted. If the counterweight is not adjusted in time, the crane will swing and fall in the opposite direction, potentially causing it to tilt backward and overturn. This requires multiple movements of the counterweight. However, the counterweight is too heavy. Traditional methods of moving the counterweight back and forth using push wheels or tracks can cause the teeth on the gear surface to break under prolonged wear, creating cavities on the gear surface and leading to slippage during movement. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that in the prior art, when a crane is lifting heavy objects, it is necessary to move the counterweight back and forth frequently in order to maintain the balance of the crane. However, if the counterweight is too heavy, the teeth on the surface of the gear need to rub back and forth on the track during the back and forth movement, which will cause great wear on the surface of the teeth, so that the surface of the teeth will fall off. When replacing them, the entire tooth disc needs to be replaced, which is wasteful of equipment. Moreover, the current size needs to be adjusted or replaced during replacement.

[0006] To solve the above-mentioned technical problems, the present invention provides an anti-tilting crane, comprising: The control room is fixedly installed at the center of the top of the mobile vehicle; A sliding sleeve is fixedly installed on the left edge of the top of the mobile vehicle; A counterweight block that is slidably fitted onto the inner wall of the sliding sleeve; Threaded slots are formed on the top surface of the counterweight and located at both sides of the edge. A bidirectional sliding unit is slidably fitted onto the top outer surface of the sliding housing one. The bidirectional sliding unit includes a second sliding housing that is movably overlapped on the top outer surface of the sliding housing one. Motors two are symmetrically fixedly installed on both sides of the second sliding housing. Snap-fit ​​grooves are symmetrically formed on both sides of the second sliding housing. Multiple sets of pushing toothed discs are fixedly connected to the output ends of the snap-fit ​​grooves. The motors two at both ends of the second sliding housing rotate the pushing toothed discs. Two pushing toothed discs engage in different interiors, allowing them to slide on the inner wall of the transmission track. A set of pushing toothed discs has evenly distributed trapezoidal grooves on its outer surface. A hydraulic telescopic rod two is fixedly installed on the bottom inner wall of the trapezoidal grooves. An elastic wire is fixedly connected to the top surface of the hydraulic telescopic rod two. After the surface of the swing arm is removed from the first sliding housing, the pressure is eliminated. The elastic wire on the top surface of the hydraulic telescopic rod two then pushes the swing arm in the opposite direction, increasing the pushing force after the second sliding housing moves back. This reduces the previous swing arm movement. The arm repeats the above steps, retracting the swing arm into the trapezoidal groove to prevent the inside of the clasps from being constantly worn and breaking. A swing arm is oscillatingly connected to one side of the inner wall of the trapezoidal groove. When the clasps are rotated, the bonding plate on one side of the swing arm adheres to the vertical surface, increasing the bonding force. The swing arm presses against the vertical surface at a relatively horizontal angle for support. As the clasps rotate, the pushing force on its surface is directly transmitted to the surface through the swing arm to push the sliding sleeve two, reducing the dissipation of the pushing force. The highest point of the top surface of the swing arm is provided with an R-shaped rounded corner. When the clasps slide to one side, the other clasps slide in the opposite direction. Then, the inclined surface on the top surface of the swing arm and the R-shaped rounded corner contact the inclined surface on the top surface, thereby pressing the swing arm in the opposite direction and compressing it into the trapezoidal groove. The other end of the swing arm is fixedly connected to a bonding plate that is movably sleeved on the other side of the inner wall of the trapezoidal groove. A transmission rail is provided on the top surface of the sliding sleeve and at the outer edge of the sliding sleeve. Two sets of limiting plates are provided on the inner wall of the transmission rail. Trapezoidal locking blocks are fixedly connected to the inner wall of the two sets of limiting plates. As the swing arm is attached to different surfaces, the pushing locking plate slides on the top surface of the sliding sleeve.

[0007] In one embodiment of the present invention, a motor is fixedly installed on the top surface of the sliding sleeve second and at the middle position, and movable sleeves are movably sleeved on the top surface of the sliding sleeve second and at the two side edges of the motor first.

[0008] In one embodiment of the present invention, a limiting chuck is fixedly connected to the tip of the output end of the motor, and a limiting plate that is movably sleeved on the bottom surface of the limiting chuck is fixedly connected to the top of the movable sleeve.

[0009] In one embodiment of the present invention, a threaded rod is threadedly connected to the outer surface of the sliding sleeve and the inner wall of the movable sleeve and the limiting plate.

[0010] In one embodiment of the present invention, a limiting rod is fixedly connected to the outer center position of the push tooth disk to protect the push tooth disk that is no longer in use and reduce the wear of the swing arm. Each push tooth disk is used only in the same direction. A mating plate disposed on the inner wall of the locking groove is movably sleeved on the outer surface of the limiting rod.

[0011] In one embodiment of the present invention, a collar that fits against the outer surface of the mating plate is threadedly fitted onto the outer surface of the limiting rod.

[0012] In one embodiment of the present invention, a limiting sliding groove is provided on the inner wall of the sliding sleeve and at the bottom edge position, which is movably sleeved on the two bottom edges of the counterweight.

[0013] In one embodiment of the present invention, a groove is provided on the top surface of the first sliding sleeve and at the inner edge position, which is movably fitted onto the bottom surface of the second sliding sleeve.

[0014] In one embodiment of the present invention, a rotating shaft is provided at the top edge of the mobile vehicle, and a support frame disposed on one of the two surfaces of the sliding sleeve is fixedly installed at the top of the rotating shaft on the outer surface.

[0015] In one embodiment of the present invention, a telescopic swing arm is oscillatingly connected to the top edge of the rotating shaft core, and a hydraulic telescopic rod is oscillatingly connected to the two sides of the telescopic swing arm and disposed on the two sides of the support frame. A lifting wire rope is movably sleeved on one end of the telescopic swing arm on the top surface of the support frame.

[0016] The technical solution of the present invention has the following advantages compared with the prior art: The present invention discloses an anti-tilting crane, in which two motors at both ends of a sliding housing rotate a push-grip disc. The two push-grip discs are engaged in different interiors, allowing them to slide on the inner wall of the transmission track. When the push-grip discs rotate, a contact plate on one side of the swing arm adheres to the vertical surface, increasing the contact force. The swing arm, at a relatively horizontal angle, presses against the vertical surface for support. The rotation of the push-grip discs directly transmits the pushing force to the surface of the sliding housing through the swing arm, pushing the sliding housing and reducing the dissipation of thrust. As the swing arm contacts different surfaces, the push-grip discs slide on the top surface of the sliding housing. When the push-grip discs slide to one side, the other... The push toothed disc slides in the opposite direction, and contacts the inclined surface on the top surface of the swing arm and the R-shaped rounded corner on the inclined surface of the top surface, thereby squeezing the swing arm in the opposite direction and compressing it into the interior of the trapezoidal groove. This protects the push toothed disc that is no longer in use and reduces the wear of the swing arm. A single push toothed disc is only used in the same direction. After the surface of the swing arm is removed from the surface, the squeezing force is gone. In conjunction with the elastic wire on the top surface of the hydraulic telescopic rod two, the swing arm is pushed out in the opposite direction. As a result, the sliding sleeve two can increase the pushing force after it moves back. The previous swing arm will repeat the above steps to retract the swing arm into the interior of the trapezoidal groove, so as to avoid the inside of the toothed disc being worn and broken. The present invention discloses an anti-tilting crane. When the sliding sleeve two is moved to the top surface of the counterweight by the push of the chuck, the rotation of the motor utilizes the threaded layer on its surface to rotate the movable sleeve. The threaded rod and the limiting chuck limit the position of the limiting plate on the top surface of the movable sleeve, causing the movable sleeve to rotate in place on the top surface of the sliding sleeve two. This causes the threaded rod to rotate up and down inside the movable sleeve, thereby fitting the threaded rod onto the top inner wall of the counterweight. After the counterweight is fixed, the rotation of the push chuck causes... The counterweight slides on the inner wall of the limiting sliding groove, moving it to the outermost end of the sliding sleeve, increasing the weight at the end of the sliding sleeve, and maintaining the gravity at the outermost two ends of the rotating shaft, so that the sliding sleeve and the telescopic swing arm are in horizontal adjustment. When the heavy equipment is put into operation, the outermost counterweight is moved back to the innermost position of the sliding sleeve, so that the overall gravity of the counterweight is concentrated at the center of the rotating shaft, and then the heavy equipment is disassembled, avoiding the backward tilting effect caused by moving the vehicle after the heavy equipment is put into operation. The present invention discloses an anti-tilting crane. The mobile trolley is moved to a suitable position, with its front facing the location where equipment needs to be lifted or placed. The length of the telescopic swing arm is extended according to the current position. Multiple hydraulic telescopic rods are used to adjust the swing amplitude of the telescopic swing arm. The lifting wire rope is extended to secure the equipment to be lifted. When lifting the equipment, with the rotating shaft as the center point, the counterweight slides on the inner wall of the limiting sliding groove, moving it to the outermost end of the sliding sleeve. This increases the weight at the tail end of the sliding sleeve, maintaining gravity at the outermost two ends of the rotating shaft, thus ensuring horizontal adjustment between the sliding sleeve and the telescopic swing arm. Attached Figure Description

[0017] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the mobile vehicle in this invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the sliding sleeve in this invention, viewed from a central section. Figure 4 This is a schematic diagram of the two-dimensional structure of the sliding sleeve in this invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the sliding sleeve shell II in this invention; Figure 6 This is a three-dimensional structural diagram of the two push-tooth discs turning angle in this invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the push tooth disc in this invention; Figure 8 This is a cross-sectional three-dimensional structural diagram of the sliding sleeve in this invention; Figure 9 This is a cross-sectional three-dimensional structural diagram of the transmission track in this invention.

[0019] Explanation of reference numerals in the instruction manual: 11. Mobile vehicle; 111. Rotating shaft; 112. Support frame; 113. Telescopic swing arm; 114. Lifting wire rope; 115. Hydraulic telescopic rod (one type); 12. Sliding sleeve one; 121. Sliding sleeve II; a1. Movable sleeve; a2. Limiting plate; a3. Threaded rod; a4. Motor I; a5. Limiting chuck; a6. Snap-fit ​​groove; a7, Motor 2; a71, push toothed disc; c1, trapezoidal groove; c2, swing arm; c3, hydraulic telescopic rod II; c4, elastic wire; c5, R-shaped rounded corner; c6, bonding plate; a72, Limiting rod; a73, Connecting plate; a74, Ring; 122. Limiting sliding groove; 123. Sliding groove; 124. Transmission rail; 13. Control room; 14. Counterweight. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0021] Reference Figure 1 - Figure 9 As shown, an anti-tilting crane of the present invention includes: The control room 13 is fixedly installed at the middle position on the top of the mobile vehicle 11; A sliding sleeve 12 is fixedly installed on the top left edge of the mobile vehicle 11; A counterweight 14 is slidably fitted onto the inner wall of the sliding sleeve 12; Threaded slots are formed on the top surface of the counterweight 14 and located at both sides of the edge. A bidirectional sliding unit is slidably fitted onto the top outer surface of the sliding sleeve 12. The bidirectional sliding unit includes a sliding sleeve 2 121 that is movably overlapped on the top outer surface of the sliding sleeve 12. Motors 2 a7 are symmetrically fixedly installed on both sides of the sliding sleeve 2 121. Snap-fit ​​grooves a6 are symmetrically opened on both sides of the sliding sleeve 2 121. Multiple sets of push-grip discs a71 are fixedly connected to the output end of the snap-fit ​​grooves a6. A set of push-grip discs a71 has evenly distributed trapezoidal grooves c1 on the outer surface of one set of push-grip discs a71. A hydraulic telescopic rod 2 c3 is fixedly installed on the bottom inner wall of the trapezoidal groove c1. An elastic wire c4 is fixedly connected to the top surface of the hydraulic telescopic rod 2 c3. A swing arm c2 is swayingly connected to one inner wall of the trapezoidal groove c1. An R-shaped rounded corner c5 is provided at the highest point of the top surface of the swing arm c2. A bonding plate c6 that is movably fitted onto the other inner wall of the trapezoidal groove c1 is fixedly connected to the other end of the swing arm c2. A transmission track 124 is provided on the top surface of the sliding sleeve 12 and at the outer edge of the sliding sleeve 12. Two sets of limiting plates 125 are provided on the inner wall of the transmission track 124. Trapezoidal locking blocks 126 are fixedly connected to the inner wall of the two sets of limiting plates 125.

[0022] The bidirectional sliding unit provided by this invention, when in use, moves the mobile cart 11 to a suitable position, with the front of the mobile cart 11 facing the location where the equipment needs to be lifted or placed, to lift the gravity equipment. Simultaneously, the motors a7 at both ends of the sliding housing 121 drive the toothed discs a71 to rotate. The two toothed discs a71 engage inside different limiting plates 125, allowing them to slide on the inner wall of the transmission track 124. When the toothed discs a71 rotate... The bonding plate c6 on one side of the swing arm c2 adheres to the vertical surface of the trapezoidal block 126, increasing the bonding force. The swing arm c2 presses against the vertical surface of the trapezoidal block 126 at a relatively horizontal angle for support. As the toothed disc a71 rotates, the pushing force on its surface is directly transmitted to the surface of the trapezoidal block 126 through the swing arm c2, pushing the sliding sleeve 12 and reducing the dissipation of the pushing force. As the swing arm c2 adheres to different surfaces of the trapezoidal block 126, the pushing force is increased. The toothed disc a71 slides on the top surface of the sliding sleeve 12. When the toothed disc a71 is pushed to one side, another toothed disc a71 slides in the opposite direction. The two discs contact the inclined surface on the top surface of the swing arm c2 and the inclined surface on the top surface of the trapezoidal block 126 via the R-shaped fillet c5, thus pressing the swing arm c2 in the opposite direction and compressing it into the trapezoidal groove c1. This protects the unused toothed disc a71 and reduces wear on the swing arm c2. (Single push...) The toothed disc a71 is used only in the same direction. After the surface of the swing arm c2 is removed from the surface of the trapezoidal block 126, the squeezing force is gone. The elastic wire c4 on the top surface of the hydraulic telescopic rod c3 pushes the swing arm c2 in the opposite direction. As a result, the sliding sleeve 121 can increase the pushing force after it moves back. The previous swing arm c2 will repeat the above steps to retract the swing arm c2 into the interior of the trapezoidal groove c1, so as to avoid the inside of the toothed disc being worn and broken.

[0023] Furthermore, such as Figure 1 - Figure 8As shown, a motor a4 is fixedly installed on the top surface of the sliding sleeve 121 at its center position. Movable sleeves a1 are movably fitted onto the top surface of the sliding sleeve 121 at the two side edges of the motor a4. A limit chuck a5 is fixedly connected to the tip of the output end of the motor a4. A limit plate a2 is fixedly connected to the top of the movable sleeve a1, movably fitted onto the bottom surface of the limit chuck a5. A threaded rod a3 is threadedly fitted onto the outer surface of the sliding sleeve 121 and the inner wall of the movable sleeve a1 and the limit plate a2, pushing the outer center of the toothed disc a71. A limiting rod a72 is fixedly connected at the center position. A mating plate a73 is movably sleeved on the outer surface of the limiting rod a72 and is provided on the inner wall of the snap-fit ​​groove a6. A collar a74 is threadedly sleeved on the outer surface of the limiting rod a72 and fits against the outer surface of the mating plate a73. A limiting sliding groove 122 is provided on the inner wall of the sliding sleeve 12 at the bottom edge position and is movably sleeved on the bottom two edges of the counterweight block 14. A sliding groove 123 is provided on the top surface of the sliding sleeve 12 at the inner edge position and is movably sleeved on the bottom surface of the sliding sleeve 2 121.

[0024] The movable sleeve a1, limiting disc a2, threaded rod a3, sliding sleeve shell 121, limiting sliding groove 122, and rotating shaft core 111 provided by this invention, when the sliding sleeve shell 121 moves to the top surface of the counterweight 14 under the push of the pushing chuck disc a71, and the motor a4 rotates, the threaded layer on its surface rotates the movable sleeve a1. The threaded rod a3 and the limiting chuck a5 limit the position of the limiting disc a2 on the top surface of the movable sleeve a1, so that the movable sleeve a1 rotates in place on the top surface of the sliding sleeve shell 121, thereby causing the threaded rod a3 to rotate up and down inside the movable sleeve a1, and then fitting the threaded rod a3 onto the top inner wall of the counterweight 14. After the counterweight 14 is fixed, the counterweight 14 slides on the inner wall of the limiting sliding groove 122 under the rotation of the push toothed disc a71, moving it to the outermost end of the sliding sleeve 12, increasing the weight at the end of the sliding sleeve 12, and maintaining the gravity at the outermost two ends of the rotating shaft core 111, so that the sliding sleeve 12 and the telescopic swing arm 113 are in horizontal adjustment. When the heavy equipment is put into operation, the outermost counterweight 14 is simply moved back to the innermost position of the sliding sleeve 12, so that the overall gravity of the counterweight 14 is concentrated at the center of the rotating shaft core 111, and then the heavy equipment is disassembled, so as to avoid the backward tilting effect caused by moving the cart 11 after the heavy equipment is put into operation.

[0025] Furthermore, such as Figure 1 - Figure 3As shown, a rotating shaft core 111 is provided on one side edge of the top of the mobile vehicle 11. A support frame 112 is fixedly installed on the top of the rotating shaft core 111 and on the outer surface of the outer surface. A telescopic swing arm 113 is swayed and connected to the other side edge of the top of the rotating shaft core 111. A hydraulic telescopic rod 115 is swayed and connected to the two sides of the telescopic swing arm 113. A lifting wire rope 114 is movably sleeved on one end of the telescopic swing arm 113 on the top surface of the support frame 112.

[0026] When using the telescopic swing arm 113, lifting wire rope 114, and hydraulic telescopic rod 115 provided by the present invention, the mobile vehicle 11 is moved to a suitable position, the front of the mobile vehicle 11 is oriented toward the position where the equipment needs to be lifted or placed, the length of the telescopic swing arm 113 is extended according to the current position, the swing amplitude of the telescopic swing arm 113 is adjusted by multiple hydraulic telescopic rods 115, the lifting wire rope 114 is extended to fix the equipment to be lifted, and the equipment is lifted. When lifting the equipment, it moves on the surface of the sliding sleeve 12 in conjunction with the counterweight 14.

[0027] The working principle of the auxiliary loading and unloading device is explained in detail below. The mobile vehicle 11 is moved to a suitable position, and the front of the mobile vehicle 11 is oriented toward the position where the equipment needs to be lifted or placed. The length of the telescopic swing arm 113 is extended according to the current position. The swing amplitude of the telescopic swing arm 113 is then adjusted by multiple hydraulic telescopic rods 115. The lifting wire rope 114 is extended to fix the equipment to be lifted and lift it up. When lifting the equipment, the counterweight 14 is slid on the inner wall of the limiting sliding groove 122 with the rotating shaft core 111 as the center point. It is moved to the outermost end of the sliding sleeve 12, increasing the weight at the end of the sliding sleeve 12 and maintaining the gravity at the outermost two ends of the rotating shaft core 111, so that the sliding sleeve 12 and the telescopic swing arm 113 are in horizontal adjustment. The two push-tooth disks a71 are rotated by motors a7 at both ends of the sliding sleeve 121. The two push-tooth disks a71 are engaged inside different limiting plates 125, allowing them to slide on the inner wall of the transmission track 124. When the push-tooth disks a71 rotate, the bonding plate c6 on one side of the swing arm c2 is attached to the vertical surface of the trapezoidal block 126, increasing the bonding force. The swing arm c2 will press against the vertical surface of the trapezoidal block 126 at a relatively horizontal angle for support. Under the rotation of the push-tooth disks a71, the pushing force on its surface is directly transmitted to the surface of the trapezoidal block 126 through the swing arm c2 to push the sliding sleeve 121, reducing the dissipation of the pushing force. As the swing arm c2 is attached to the different trapezoidal block 126 surfaces, the push-tooth disks a71 slide on the top surface of the sliding sleeve 121. When the push-tooth disks a71 move to one side... The sliding mechanism causes another push toothed disc a71 to slide in the opposite direction. The swing arm c2 contacts the inclined surface on the top surface of the swing arm c2 and the R-shaped rounded corner c5 on the inclined surface on the top surface of the trapezoidal block 126, thereby squeezing the swing arm c2 in the opposite direction and compressing it into the interior of the trapezoidal groove c1. This protects the unused push toothed disc a71 and reduces the wear of the swing arm c2. A single push toothed disc a71 is only used in the same direction. After the surface of the swing arm c2 is removed from the surface of the trapezoidal block 126, the squeezing force is gone. The elastic wire c4 on the top surface of the hydraulic telescopic rod c3 pushes the swing arm c2 in the opposite direction. This allows the sliding sleeve 121 to increase the pushing force after it moves back. The previous swing arm c2 will repeat the above steps to retract the swing arm c2 into the interior of the trapezoidal groove c1, preventing the inside of the toothed disc from being worn and breaking. When the sliding sleeve 121 moves to the top surface of the counterweight 14 under the push of the chuck a71, the rotating motor a4 uses the threaded layer on its surface to rotate the movable sleeve a1. The threaded rod a3 and the limiting chuck a5 limit the position of the limiting plate a2 on the top surface of the movable sleeve a1, causing the movable sleeve a1 to rotate in place on the top surface of the sliding sleeve 121. This causes the threaded rod a3 to rotate up and down inside the movable sleeve a1, thus fitting the threaded rod a3 onto the top inner wall of the counterweight 14. After the counterweight 14 is fixed, the rotation of the chuck a71 causes the counterweight to... Block 14 slides on the inner wall of the limiting sliding groove 122, moving it to the outermost end of the sliding sleeve 12, increasing the weight at the end of the sliding sleeve 12, and maintaining the gravity at the outermost two ends of the rotating shaft core 111, so that the sliding sleeve 12 and the telescopic swing arm 113 are in horizontal adjustment. When the heavy equipment is put into operation, the outermost counterweight block 14 is moved back to the innermost position of the sliding sleeve 12, so that the overall gravity of the counterweight block 14 is concentrated at the center of the rotating shaft core 111, and then the heavy equipment is disassembled, so as to avoid the backward tilting effect caused by moving the cart 11 after the heavy equipment is put into operation.

[0028] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An anti-tilting crane, comprising: The control room (13) is fixedly installed at the middle position on the top of the mobile vehicle (11); A sliding sleeve (12) is fixedly installed on the left edge of the top of the mobile vehicle (11); The counterweight (14) is slidably sleeved on the inner wall of the sliding sleeve (12). Threaded slots are formed on the top surface of the counterweight (14) and located at the two side edges; The feature is that a bidirectional sliding unit is slidably fitted onto the top outer surface of the first sliding sleeve (12), the bidirectional sliding unit includes a second sliding sleeve (121) that is movably overlapped on the top outer surface of the first sliding sleeve (12), a second motor (a7) is symmetrically fixedly installed on both sides of the second sliding sleeve (121), and a snap-fit ​​groove (a6) is symmetrically opened on both sides of the second sliding sleeve (121), the snap-fit ​​groove (a6) is fixedly connected to multiple sets of push-grip discs (a71), and one set of push-grip discs (a71) has a snap-fit ​​groove (a6) on its outer surface. The device has uniformly distributed trapezoidal grooves (c1). A hydraulic telescopic rod 2 (c3) is fixedly installed on the bottom inner wall of the trapezoidal groove (c1). An elastic wire (c4) is fixedly connected to the top surface of the hydraulic telescopic rod 2 (c3). A swing arm (c2) is swayingly connected to one inner wall of the trapezoidal groove (c1). An R-shaped rounded corner (c5) is provided at the highest point of the top surface of the swing arm (c2). A fitting plate (c6) is fixedly connected to the other end of the swing arm (c2) and is movably sleeved on the other inner wall of the trapezoidal groove (c1). A transmission track (124) is provided on the top surface of the sliding sleeve (12) and at the outer edge of the sliding sleeve (12). Two sets of limiting plates (125) are provided on the inner wall of the transmission track (124). Trapezoidal locking blocks (126) are fixedly connected to the inner wall of the two sets of limiting plates (125). The bonding plate (c6) on one side surface of the swing arm (c2) is attached to the vertical surface of the trapezoidal block (126) to increase the bonding force. The swing arm (c2) is pressed in the opposite direction by the inclined surface on the top surface of the swing arm (c2) and the R-shaped rounded corner (c5) on the inclined surface on the top surface of the trapezoidal block (126), thereby compressing the swing arm (c2) into the interior of the trapezoidal groove (c1), protecting the unused push toothed disc (a71) and reducing the wear of the swing arm (c2).

2. The anti-tilting crane according to claim 1, characterized in that: Motor 1 (a4) is fixedly installed on the top surface of the sliding sleeve 2 (121) at the middle position, and movable sleeves (a1) are movably sleeved on the top surface of the sliding sleeve 2 (121) at the two side edges of motor 1 (a4).

3. The anti-tilting crane according to claim 2, characterized in that: A limiting chuck (a5) is fixedly connected to the tip of the output end of the motor (a4), and a limiting plate (a2) is fixedly connected to the top of the movable sleeve (a1) and is movably sleeved on the bottom surface of the limiting chuck (a5).

4. The anti-tilting crane according to claim 1, characterized in that: A threaded rod (a3) ​​is threadedly fitted onto the outer surface of the sliding sleeve (121) and the inner wall of the movable sleeve (a1) and the limiting plate (a2).

5. The anti-tilting crane according to claim 1, characterized in that: A limiting rod (a72) is fixedly connected to the outer center position of the push toothed disc (a71), and a mating plate (a73) provided on the inner wall of the locking groove (a6) is movably sleeved on the outer surface of the limiting rod (a72).

6. The anti-tilting crane according to claim 5, characterized in that: The outer surface of the limiting rod (a72) is threadedly fitted with a collar (a74) that fits against the outer surface of the mating plate (a73).

7. The anti-tilting crane according to claim 1, characterized in that: The inner wall of the sliding sleeve (12) and the bottom edge are provided with a limiting sliding groove (122) that is movably sleeved on the bottom two sides of the counterweight (14).

8. The anti-tilting crane according to claim 1, characterized in that: The top surface of the first sliding sleeve (12) and the inner edge position are provided with a groove (123) that is movably sleeved on the bottom surface of the second sliding sleeve (121).

9. The anti-tilting crane according to claim 1, characterized in that: A rotating shaft (111) is provided on one side edge of the top of the mobile vehicle (11). A support frame (112) is fixedly installed on the top of the rotating shaft (111) and on the outer surface. The support frame (112) is provided on both sides of the sliding sleeve (12).

10. An anti-tilting crane according to claim 9, characterized in that: A telescopic swing arm (113) is swayingly connected to the other side edge of the top of the rotating shaft (111). A hydraulic telescopic rod (115) is swayingly connected to the two sides of the telescopic swing arm (113) and is provided on the two sides of the support frame (112). A lifting wire rope (114) is movably sleeved on one end of the telescopic swing arm (113) on the top surface of the support frame (112).

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