A kind of embrace and clip rotary mechanism

Abstract

The present application relates to the technical field of holding fork, and particularly relates to a holding and clamping rotating mechanism, which comprises an electric forklift, a telescopic hydraulic cylinder is fixed longitudinally on a lifting frame at the front end of the electric forklift, the output end of the telescopic hydraulic cylinder is connected to a lifting platform in the lifting frame, and the holding and clamping mechanism and a hydraulic support auxiliary system are arranged at the front of the electric forklift, a first rotating hydraulic motor is installed on the lifting platform, the holding and clamping mechanism has the functions of lifting, X-direction rotation and Y-direction rotation through the cooperative control of the first rotating hydraulic motor and a second rotating hydraulic motor, and the flexibility when the holding and clamping mechanism clamps a stacking cylinder is improved; through the arrangement of the hydraulic support auxiliary system, when the cylinder is clamped, the auxiliary push clamps on one side can first contact the cylinder, then the auxiliary push clamps on the other side can also contact the cylinder under the cooperation of the hydraulic system, and through the auxiliary support of the auxiliary push clamps, stable support can be provided for the holding and clamping mechanism when the holding and clamping mechanism clamps the cylinder, so that the stability of the cylinder is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of holding forks, in particular to a holding and clamping rotating mechanism. BACKGROUND

[0002] In the field of logistics transportation and warehouse management, traditional forklift equipment usually uses forks to transport and stack goods, but this structure has certain limitations for non-standard shaped or special material goods, such as cylindrical objects, etc. The traditional fork cannot stably clamp and pick up the cylindrical goods. In order to solve this problem, the existing technology proposes to use a holding and clamping mechanism forklift, which realizes effective transportation and stacking of special-shaped goods through the clamping and rotating function of the holding and clamping mechanism. Although the existing holding and clamping mechanism forklift can clamp and transport special-shaped goods such as cylindrical objects, there are still the following problems in actual operation: for non-standard shaped or different sized goods, the existing holding and clamping mechanism is difficult to achieve precise clamping. If the goods are not located at the center of the holding and clamping mechanism during clamping, the holding and clamping mechanism is easy to be unevenly stressed, increasing the risk of damage to the goods or the holding and clamping mechanism, and even causing the risk of goods deviation or overturning during transportation. The existing holding and clamping mechanism lacks effective auxiliary support and stress monitoring devices, and also lacks effective control mechanism, making it difficult to adjust the holding and clamping position in real time during clamping and rotating. When the holding and clamping mechanism is performing the overturning operation of the cylinder, the cylinder is easy to lose balance during the overturning process, affecting the work efficiency and safety. SUMMARY

[0003] In view of the above-mentioned defects and problems, the present application provides a holding and clamping rotating mechanism. Through the hydraulic regulation and control of the hydraulic support auxiliary system, the auxiliary push clamps on both sides can provide support on both sides of the goods when the holding and clamping mechanism clamps the goods, avoiding the goods from falling during clamping. The pressure sensor can monitor the pressure received by the holding and clamping group in real time when clamping the goods, and cooperate with the moving mechanism to adjust the position of the goods in real time, ensuring that the goods are located at the center of the holding and clamping mechanism, thereby ensuring the stability of the goods during clamping or rotating.

[0004] The technical problem is solved by the following solution: a kind of holding and clamping rotary mechanism, including electric forklift, telescopic hydraulic cylinder is fixed longitudinally on the lifting frame of the front end of electric forklift, the output end of telescopic hydraulic cylinder is connected on the lifting platform in lifting frame, it further includes holding and clamping mechanism and hydraulic support auxiliary system being arranged in the front of electric forklift, first rotary hydraulic motor is installed on the lifting platform, the output end of first rotary hydraulic motor is connected at the central position of holding and clamping mechanism, and holding and clamping mechanism can be controlled to rotate along X direction by first rotary hydraulic motor;The holding and clamping mechanism includes holding and clamping frame and holding and clamping group, holding and clamping group is horizontally slidably sleeved on holding and clamping frame by holding and clamping movable seat and holding and clamping arm left-right symmetry, and two holding and clamping groups can be close to or away from each other, the holding and clamping group is installed on holding and clamping arm by second rotary hydraulic motor, and holding and clamping group can be controlled to rotate along Y direction by second rotary hydraulic motor;The holding and clamping group is composed of two mutually sleeved auxiliary holding and clamping and main holding and clamping, auxiliary holding and clamping is fixed on the output end of second rotary hydraulic motor, main holding and clamping is directionally slidably sleeved on the inner side of auxiliary holding and clamping, and the inner side of auxiliary holding and clamping is provided with moving mechanism for controlling the directional movement of main holding and clamping;

[0005] The hydraulic support auxiliary system includes hydraulic oil tank and hydraulic push rod, the hydraulic oil tank is arranged on the holding and clamping frame, the hydraulic push rod is vertically installed on the main holding and clamping, and the hydraulic oil in the hydraulic push rod on the left and right sides can flow to each other through the hydraulic oil tank as an intermediary, the auxiliary push clamp is fixed on the output end of the hydraulic push rod, and the auxiliary push clamp is located in the inner side of the holding and clamping group and is controlled to extend and retract by the hydraulic push rod;When the cylinder of holding and clamping is not at the central position, the auxiliary push clamp on one side will first contact the cylinder, and the hydraulic oil in the hydraulic push rod on the same side will be pressed into the hydraulic push rod on the other side, to push the auxiliary push clamp on the other side to move forward and contact the other side of the cylinder, and the auxiliary push clamp on both sides can provide auxiliary support to both sides of the cylinder.

[0006] Further, the holding and clamping frame is fixed on the output end of the first rotary hydraulic motor, two holding and clamping movable seats are horizontally slidably sleeved on the holding and clamping frame, the holding and clamping arm is vertically welded on the holding and clamping movable seat, the holding and clamping group is installed at the distal end of the holding and clamping arm, the fixed end of the second rotary hydraulic motor is installed at the distal end of the holding and clamping arm, and the output end is fixed at the central position of the holding and clamping group.

[0007] Further, the hydraulic push rods on the same side are connected by a oil distribution pipe, the main oil pipe is symmetrically connected on both sides of the hydraulic oil tank, and the front end of the main oil pipe is connected to the center position of the oil distribution pipe by a rotary joint.

[0008] Further, a piston is matched and sleeved in the hydraulic oil tank, the piston is connected in the hydraulic oil tank by a spring, an oil cavity is formed between the piston and the bottom wall of the hydraulic oil tank, and the main oil pipe is connected with the oil cavity.

[0009] Further, the moving mechanism comprises a motor installed in the auxiliary clamp, an output end of the motor is connected with a screw rod, a nut is threadedly sleeved on the screw rod, the nut is connected to the outer side of the main clamp through a connecting block, the inner side of the auxiliary clamp is longitudinally provided with a movable slot matched with the connecting block, the inner side of the auxiliary clamp is symmetrically provided with guide slots parallel to the movable slot, the outer side of the main clamp is symmetrically and fixedly provided with guide blocks, and the main clamp is directionally sleeved on the auxiliary clamp through the guide blocks.

[0010] Further, the front side of the clamp frame is horizontally and symmetrically provided with two sliding grooves, the rear side of the clamp movable seat is fixedly provided with sliding blocks matched with the sliding grooves, the clamp movable seat is directionally sleeved in the sliding grooves through the sliding blocks, and the two clamp movable seats are connected through the telescopic hydraulic cylinders, the telescopic hydraulic cylinders can control the two clamp movable seats to move in opposite directions, so that the clamp groups are away from or close to each other.

[0011] Further, the inner side of the main clamp is symmetrically and fixedly provided with pressure sensors, and the pressure sensors can monitor the stress received by the two ends of the main clamp when the main clamp is sleeved on the clamp cylinder.

[0012] Further, the position of the main oil pipe close to the hydraulic oil tank is provided in the structure of the telescopic pipe section, and the telescopic pipe section can be matched to complete the telescoping when the telescopic hydraulic cylinders control the clamp groups to be close to or away from each other.

[0013] Further, the inner side of the main clamp 342 is provided with clamp grooves with different diameters, the clamp grooves with small diameters are arranged in the clamp grooves with large diameters, and the clamp grooves with different diameters are arranged.

[0014] Further, the inner side of the main clamp is provided with a push clamp groove matched with the auxiliary push clamp, and the clamp arm is provided with a recessed groove.

[0015] The beneficial effects of the present application are as follows: through the cooperative control of the first rotary hydraulic motor and the second rotary hydraulic motor, the precise overturning rotation of the clamping mechanism along the X direction and the Y direction is realized, so that the clamping mechanism has the functions of lifting, X direction rotation and Y direction rotation, and the flexibility when the clamping mechanism stacks the cylinder is improved; through the setting of the auxiliary clamping and the main clamping which are sleeved with each other and the cooperation of the moving mechanism, the main clamping can be moved for position adjustment on the auxiliary clamping through the moving mechanism, compared with directly controlling the movement of the forklift, only moving the position of the main clamping to correspond to the center position of the cylinder is more simple and convenient and easy to operate; through the setting of the hydraulic support auxiliary system, when the cylinder is clamped, the auxiliary push clamping on one side can first contact the cylinder, then the auxiliary push clamping on the other side can also contact the cylinder under the cooperation of the hydraulic system, and through the cooperation of the piston and the spring in the hydraulic oil tank, the temporary storage and release of the hydraulic oil are realized, so that the auxiliary push clamping on both sides of the clamping mechanism can be adaptively adjusted during the clamping process, the stable carrying of the cylinder is ensured, through the auxiliary support of the auxiliary push clamping, stable support can be provided for the clamping mechanism when clamping the cylinder, the stability of the cylinder is ensured, and the cylinder is prevented from overturning during the clamping process; through the installation of the pressure sensor on the inner side of the main clamping, the stress size of the cylinder at both ends during the clamping process can be monitored in real time, and the moving mechanism is used for fine adjustment, so that the stress distribution between the cylinder and the clamping group is uniform; through the setting of the clamping grooves with different diameters, the main clamping has the clamping effect of being compatible with multiple cylinders with different diameters, the applicability and flexibility of the clamping mechanism are improved; through the centralized control of the operating rod, the operation process is simplified, the operation difficulty is reduced, and the safety and comfort of the operation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present application;

[0017] Figure 2 It is a side view structural schematic diagram of the present application;

[0018] Figure 3 It is a top view structural schematic diagram of the present application;

[0019] Figure 4 It is a partial three-dimensional structural schematic diagram of the present application;

[0020] Figure 5 It is a partial three-dimensional structural schematic diagram of the present application;

[0021] Figure 6 It is a hydraulic support auxiliary system structural schematic diagram of the present application;

[0022] Figure 7 It is an auxiliary clamping and main clamping structural schematic diagram of the present application;

[0023] Figure 8 It is a movable clamping three-dimensional structural schematic diagram of the present application;

[0024] Figure 9 The fixed clamping three-dimensional structure of the present application is shown in the schematic diagram.

[0025] In the figure: 1, electric forklift; 2, first rotary hydraulic motor; 3, clamping mechanism; 31, clamping frame; 32, clamping movable seat; 33, clamping arm; 34, clamping group; 341, auxiliary clamping; 342, main clamping; 342a, clamping groove one; 342b, clamping groove two; 35, second rotary hydraulic motor; 36, sliding groove; 37, hydraulic cylinder mounting seat; 38, let go of the slot; 39, sliding block; 4, telescopic hydraulic cylinder; 5, hydraulic support auxiliary system; 51, hydraulic oil tank; 511, piston; 512, spring; 52, main oil pipe; 53, rotary joint; 54, oil distribution pipe; 55, hydraulic push rod; 56, auxiliary push clamping; 56a, push clamping groove; 57, hydraulic rod mounting seat; 6, lifting hydraulic cylinder; 7, hydraulic control console; 8, operating rod; 9, moving mechanism; 91, motor; 92, screw; 93, nut; 94, movable groove; 95, guide groove; 96, guide block; 10, pressure sensor. DETAILED DESCRIPTION

[0026] The present application is further described below in conjunction with the accompanying drawings and examples.

[0027] Please refer to Figures 1-9 , the present application provides a clamping rotary mechanism technical scheme: EMBODIMENT

[0028] According to Figure 1 , Figure 2 and Figure 3 , the front end of the lifting frame of the electric forklift 1 is provided with a clamping mechanism 3, and the first rotary hydraulic motor 2 is installed at the center position behind the clamping mechanism 3 at the front end of the electric forklift 1. The fixed end of the first rotary hydraulic motor 2 is directly fixed on the lifting platform of the electric forklift 1, and the output end is connected at the center position of the clamping frame 31. The clamping mechanism 3 can be controlled to rotate along the X direction by the first rotary hydraulic motor 2. The specific structure of the clamping mechanism 3 is shown in Figure 4 and Figure 5As shown, including the embrace clamp 31, embrace clamp movable seat 32 and embrace clamp arm 33, embrace clamp 31 is arranged in the front end of electric forklift 1, and is installed on the lifting platform of electric forklift 1 through the first rotary hydraulic motor 2, the telescopic hydraulic cylinder 4 is longitudinally fixed on the lifting frame of electric forklift 1, the output end of telescopic hydraulic cylinder 4 is connected on the lifting platform, the telescopic hydraulic cylinder 4 can control the whole embrace clamp mechanism 3 to move up and down, realize the embrace clamp movement of cylinder, two embrace clamp movable seats 32 are symmetrically horizontally slidably sleeved on the front side of embrace clamp 31, two slide grooves 36 are symmetrically arranged in the front of embrace clamp, the slide blocks 39 matched with slide grooves 36 are fixed on the rear side of embrace clamp movable seat 32, embrace clamp movable seat 32 is slidably sleeved in slide groove 36 through slide block 39, and two embrace clamp movable seats 32 can be close to or away from each other, embrace clamp arm 33 is vertically welded and fixed on embrace clamp movable seat 32, and left and right symmetric embrace clamp groups 34 are installed on the distal end of two embrace clamp arms 33, the left and right two embrace clamp groups 34 are matched for clamping cylinder, and the embrace clamp group 34 is installed on the embrace clamp arm 33 through the second rotary hydraulic motor 35, the fixed end of the second rotary hydraulic motor 35 is installed on the distal end of the embrace clamp arm 33, and the output end is fixed at the center position of the embrace clamp group 34, the Y direction rotation of the embrace clamp group 34 can be realized through the second rotary hydraulic motor 35, and then the Y direction turning of the cylinder is realized after embracing the cylinder.

[0029] The two embrace clamp movable seats 32 are connected through the telescopic hydraulic cylinder 4, two hydraulic cylinder mounting seats 37 are symmetrically arranged on the front side of embrace clamp 31, the telescopic hydraulic cylinder 4 is horizontally installed between the two embrace clamp movable seats 32 through the hydraulic cylinder mounting seat 37, the output ends of the two telescopic hydraulic cylinders 4 are symmetrically arranged and connected with the two embrace clamp movable seats 32 respectively, the two embrace clamp movable seats 32 can be controlled to move reversely through the telescopic hydraulic cylinder 4, the mutual moving away and approaching of the embrace clamp group 34 is realized, and then the clamping or releasing of the cylinder is realized.

[0030] The embrace clamp group 34 is composed of two mutually sleeved auxiliary embrace clamp 341 and main embrace clamp 342, the auxiliary embrace clamp 341 and the main embrace clamp 342 are both arc structures, and the inner side of the main embrace clamp 342 forms an embrace clamp groove, the main embrace clamp 342 can embrace the cylinder through the embrace clamp groove, the auxiliary embrace clamp 341 is directly connected with the output end of the second rotary hydraulic motor 35, the main embrace clamp 342 is directionally slidably sleeved on the inner side of the auxiliary embrace clamp 341, and the auxiliary embrace clamp 341 is provided with a moving mechanism 9 for controlling the directional movement of the main embrace clamp 342 in the inner side of the auxiliary embrace clamp 341.

[0031] A set of pressure sensors 10 are symmetrically installed on the inner side of the main clamp 342, when the clamp group 34 is clamping the cylinder, the pressure sensors 10 can monitor the pressure between the main clamp 342 and the cylinder, and during the process of the clamp group 3 controlling the cylinder to overturn, the pressure value detected by the pressure sensor 10 will also change accordingly, if the cylinder is in the center position of the clamp group 34, it can ensure that the cylinder overturns around the center, and the pressure change of the clamp group 34 during the overturning process is also within the normal range, if the cylinder is not in the center position of the clamp group 34, the center point is offset upward or downward, then the cylinder cannot overturn around the center point during the overturning process, and the stress of the two ends of the clamp group 34 during the overturning process will also exceed the range, the upper and lower pressure sensors 10 will detect that the pressure change exceeds the range, at this time the forklift driver can judge which side the cylinder position is offset to through the pressure value detected by the pressure sensor 10, and then adjusts the position of the cylinder through the moving mechanism 9, so that the center of the cylinder coincides with the center of the auxiliary clamp 341, and ensures that the stress distribution between the cylinder and the clamp group 34 is uniform, avoiding deformation or wear caused by uneven stress of the cylinder or the clamp group 34.

[0032] The specific structure of the moving mechanism 9 is shown in Figure 8 and Figure 9 A motor 91 is installed in the auxiliary clamp 341, the output end of the motor 91 is connected with a screw rod 92 located in the auxiliary clamp 341, a nut 93 is threadedly sleeved on the screw rod 92, the nut 93 is connected to the outer side of the main clamp 342 through a connecting block, and a movable groove 94 matched with the connecting block is longitudinally arranged on the inner side of the auxiliary clamp 341, a guide groove 95 parallel to the movable groove 94 is symmetrically arranged on the inner side of the auxiliary clamp 341, and a guide block 96 is symmetrically and fixedly arranged on the outer side of the main clamp 342, and the main clamp 342 is directionally sleeved on the auxiliary clamp 341 through the guide block 96; when the pressure sensor 10 detects that the first rotary hydraulic motor 2 or the second rotary hydraulic motor 35 controls the clamp group 34 and the cylinder to overturn in X direction or Y direction, and the pressure value on one side of the main clamp 342 exceeds the range, the motor 91 is started to drive the screw rod 92 to rotate, and the main clamp 342 is controlled to move up and down on the auxiliary clamp 341 through the thread cooperation between the screw rod 92 and the nut 93, so as to adjust the position of the main clamp 342, make the cylinder clamped by the main clamp 342 move a small amount in the direction with smaller pressure value, ensure that the center of the cylinder coincides with the center of the auxiliary clamp 341, and make the stress distribution between the cylinder and the clamp group 34 and the clamp arm 33 uniform, thereby improving the stability during the process of clamping and overturning the cylinder.

[0033] The electric forklift 1 is provided with a hydraulic control console 7, all the hydraulic control systems in the forklift are controlled through the hydraulic control console 7, and the operating rod 8 is arranged in the cab of the electric forklift 1, including a lifting operating rod, an angle tilting operating rod, an X-direction rotating operating rod, a Y-direction rotating operating rod and a clamping and loosening operating rod, and the forklift can be controlled to run through the operating rod.

[0034] In specific use, the electric forklift 1 keeps the clamping mechanism 3 in the state as shown in the figure before running, and the driver controls the electric forklift 1 to move to the front of the goods first when clamping the cylinder, moves the clamping mechanism 3 to the two sides of the goods, adjusts the overall height of the clamping mechanism 3 through the telescopic hydraulic cylinder 4, and ensures that the main clamping arm 342 is in the symmetrical position of the goods as much as possible, then starts the telescopic hydraulic cylinder 4, drives the clamping arms 33 and the clamping groups 34 on the two sides to move to the middle, makes the main clamping arm 342 contact the cylinder to complete clamping, and then the telescopic hydraulic cylinder 4 is retracted to drive the clamping mechanism 3 and the cylinder to move upwards, so that the cylinder is separated from the ground by a certain height, and the cylinder is moved by the electric forklift 1, when the cylinder needs to be turned in the X direction or the Y direction during the process of carrying or stacking the goods, the driver controls the first rotating hydraulic motor 2 to start through the operating rod 8, controls the clamping mechanism 3 and the clamped cylinder to turn in the X direction through the first rotating hydraulic motor 2, or controls the second rotating hydraulic motor 35 to start through the operating rod 8, controls the clamping groups 34 and the cylinder to turn in the Y direction through the second rotating hydraulic motor 35. Figure 4 During the process of turning the cylinder in the X direction or the Y direction, if the cylinder is not in the center position of the clamping groups 34, the pressure sensor 10 detects that the stress generated at one end of the main clamping arm 342 during the turning process is out of range, at this time, the driver controls the motor 91 to rotate forward or turn according to the pressure value detected by the pressure sensor 10 at the two ends of the main clamping arm 342, drives the screw rod 92 to rotate through the motor 91, and controls the main clamping arm 342 to move a small amount in the opposite direction of the offset direction through the threaded transmission cooperation between the screw rod 92 and the nut 93 and the guiding effect of the guide groove 95 and the guide block 96, adjusts the position of the main clamping arm 342 and the cylinder, until the cylinder moves to the center position of the clamping mechanism 3, ensures that the clamping groups 34 can drive the cylinder to stably complete the rotation, and ensures that the stress between the cylinder and the clamping groups 34 after the rotation is uniform, improves the stability during clamping the cylinder and reduces the fatigue strength of the clamping groups 34.

[0035] Embodiment

[0036] ​On the basis of embodiment one, when the clamping fork is in the clamping cylinder, in order to be able to stably and accurately clamp the cylinder, it is necessary to ensure that the cylinder is located in the center position of the clamping mechanism 3, and because the clamping fork is generally manually controlled, manual operation cannot accurately move the clamping group 34 symmetrically to both sides of the cylinder, and there will be a slight deviation. At this time, when clamping the cylinder, the clamping group 34 on one side will first contact the cylinder. With the continued control of the extension hydraulic cylinder 4 to operate the clamping mechanism 3, the clamping group 34 will continue to move synchronously to the middle. The clamping group 34 that first contacts the cylinder will push the cylinder, and the cylinder is subjected to force on one side, while the clamping group 34 on the other side has not contacted the cylinder, and the other side of the cylinder has no support. At this time, the clamping group 34 that first contacts the cylinder is easy to push the cylinder over. In order to solve this problem, as shown in Figure 4 、 Figure 5 and Figure 6 , a hydraulic support auxiliary system 5 is arranged on the clamping mechanism 3. The hydraulic support auxiliary system 5 includes a hydraulic oil tank 51 and a hydraulic push rod 55. The hydraulic oil tank 51 is arranged on the center front side of the clamping frame 31. The hydraulic push rod 55 has two groups in total and is vertically installed on the main clamping group 342. The hydraulic rod mounting seat 57 is fixed symmetrically on the outer side of the main clamping group 342. The fixed end of the hydraulic push rod 55 is supported through the hydraulic rod mounting seat 57 and is fixed on the main clamping group 342. The output end can be telescopic on the inner side of the main clamping group 342. The auxiliary push clamp 56 is fixed on the output end of the hydraulic push rod 55. The auxiliary push clamp 56 is located on the inner side of the clamping group 34. The curvature of the auxiliary push clamp 56 is consistent with the curvature of the main clamping group 342. The push clamp groove 56a matched with the auxiliary push clamp 56 is arranged on the inner side of the main clamping group 342.

[0037] The hydraulic push rods 55 on the same side of the upper and lower are connected by the oil distribution pipe 54, and the hydraulic oil tank 51 is symmetrically connected with the main oil pipe 52 on both sides. The main oil pipe 52 extends from the rear of the clamping movable seat 32 to the two sides of the clamping mechanism 3 in an L-shaped pipeline, and the front end of the main oil pipe 52 is connected to the center of the oil distribution pipe 54 through the rotary joint 53. When the clamping group 34 is controlled to be flipped in the Y direction by the second rotary hydraulic motor 35, the rotary joint 53 can ensure the cooperation between the main oil pipe 52 and the oil distribution pipe 54 to complete the rotation. When the clamping mechanism 3 clamps the cylinder, if the position of the forklift deviates slightly, and the cylinder is not completely in the center of the clamping mechanism 3, when the telescopic hydraulic cylinder 4 controls the two clamping groups 34 to move synchronously to the middle, the auxiliary push clamp 56 on one side will first contact the cylinder. With the two clamping groups 34 being controlled by the telescopic hydraulic cylinder 4 to continue to move synchronously to the middle, the auxiliary push clamp 56 that first contacts the cylinder will push against the cylinder, and the relative extrusion force between the auxiliary push clamp 56 and the cylinder will press the excess hydraulic oil in the hydraulic push rod 55 on the same side through the oil distribution pipe 54 and the main oil pipe 52, and the hydraulic oil tank 51 will be used as an intermediate to press into the hydraulic push rod 55 on the other side (which has not contacted the cylinder) to make the hydraulic push rod 55 on the other side elongate and drive the auxiliary push clamp 56 on the same side to stretch forward and contact the cylinder. With the clamping group continuing to move to the middle, the auxiliary push clamps on both sides can be adaptively adjusted, so that the auxiliary push clamps 56 on both sides can contact the cylinder and provide auxiliary support to both sides of the cylinder, which can prevent the clamping mechanism 3 from pushing the cylinder down when it continues to move to the middle.

[0038] The hydraulic oil tank 51 is matched with a piston 511, and an oil cavity is formed between the piston 511 and the bottom wall of the hydraulic oil tank 51. The main oil pipe 52 is connected with the oil cavity, and the piston 511 is connected in the hydraulic oil tank 51 through a spring 512. The two ends of the spring 512 are fixed on the front wall of the hydraulic oil tank 51 and the opposite end surface of the piston 511 respectively. After the two auxiliary push clamps 56 contact the cylinder and provide auxiliary support, the clamping group 34 continues to be controlled by the telescopic hydraulic cylinder 4 to move to the middle to clamp the cylinder. When the clamping group 34 moves to the middle, the auxiliary push clamps 56 on both sides generate a force with the cylinder. The hydraulic oil in the hydraulic push rod 55 on both sides enters the oil cavity of the hydraulic oil tank 51 under the action of the force to be temporarily stored, and overcomes the elastic force of the spring 512. When the main clamping group 342 completely contacts the cylinder, the auxiliary push clamp 56 also moves into the push clamp groove 56a without affecting the clamping of the main clamping group 342, and then the clamping of the cylinder can be completed by the main clamping group 342.

[0039] The clamping group 34 can only be controlled to be flipped counterclockwise by 90° by the second rotary hydraulic motor 35. The clamping arm 33 is provided with a yielding slot 38. When the clamping group 34 is flipped in the Y direction, the yielding slot 38 provides a yielding space for the oil distribution pipe 54, so that the clamping group 34 can be flipped from the vertical direction to the horizontal direction with the oil distribution pipe 54.

[0040] The main oil pipe 52 is arranged in a telescopic pipe structure near the hydraulic oil tank 51, and cooperates with the telescopic hydraulic cylinder 4 to complete the approaching or moving away of the clamping group 34. Embodiments

[0041] On the basis of the first embodiment, as Figure 8 described, two clamping grooves with different diameters are arranged on the inner side of the main clamping group 342, namely a clamping groove one 342a and a clamping groove two 342b, the diameter of the clamping groove one 342a is larger than that of the clamping groove two 342b, the clamping groove two 342b is arranged in the middle of the clamping groove one 342a, the smaller diameter cylinder can be clamped through the clamping groove two 342b, and the larger diameter cylinder can be clamped through the clamping groove one 342a, so that the main clamping group 342 has the clamping effect of being compatible with two cylinders with different diameters.

[0042] Correspondingly, the pressure sensor 10 is symmetrically installed in the clamping groove of the main clamping group 342 with different diameters.

[0043] The above description is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A kind of embrace and clip rotary mechanism, including electric fork truck (1), retractable hydraulic cylinder (4) is fixed longitudinally in the lifting frame of the front end of electric fork truck (1), the output end of retractable hydraulic cylinder (4) is connected on the lifting platform in lifting frame, it is characterized in that, The electric forklift (1) is provided with a clamping mechanism (3) and a hydraulic support auxiliary system (5) in front of the electric forklift (1), a first rotary hydraulic motor (2) is installed on the lifting platform, the output end of the first rotary hydraulic motor (2) is connected to the center position of the clamping mechanism (3), and the clamping mechanism (3) is controlled to rotate along the X direction through the first rotary hydraulic motor (2); the clamping mechanism (3) comprises a clamping frame (31) and a clamping group (34), the clamping frame (31) is fixed to the output end of the first rotary hydraulic motor (2), two clamping movable seats (32) are symmetrically and horizontally slidably sleeved on the clamping frame (31), clamping arms (33) are vertically welded on the clamping movable seats (32), the clamping group (34) is symmetrically and horizontally slidably sleeved on the clamping frame (31) through the clamping movable seats (32) and the clamping arms (33), and the two clamping groups (34) are close to or away from each other, the clamping group (34) is installed on the clamping arm (33) through a second rotary hydraulic motor (35), and the clamping group (34) is controlled to rotate along the Y direction through the second rotary hydraulic motor (35); the clamping group (34) is composed of two sleeved auxiliary clamps (341) and main clamps (342), the auxiliary clamps (341) are fixed to the output end of the second rotary hydraulic motor (35), the main clamps (342) are directionally and slidably sleeved on the inner side of the auxiliary clamps (341), and the auxiliary clamps (341) are provided with a moving mechanism (9) for controlling the directional movement of the main clamps (342) on the inner side of the auxiliary clamps (341); the moving mechanism (9) comprises a motor (91) installed in the auxiliary clamps (341), the output end of the motor (91) is connected with a screw rod (92), the screw rod (92) is threadedly sleeved with a nut (93), the nut (93) is connected to the outer side of the main clamps (342) through a connecting block, the inner side of the auxiliary clamps (341) is longitudinally provided with a movable groove (94) matched with the connecting block, the inner side of the auxiliary clamps (341) is symmetrically provided with guide grooves (95) parallel to the movable groove (94), and the outer side of the main clamps (342) is symmetrically provided with guide blocks (96), and the main clamps (342) are directionally and slidably sleeved on the auxiliary clamps (341) through the guide blocks (96). The hydraulic support auxiliary system (5) comprises a hydraulic oil tank (51) and hydraulic push rods (55), the hydraulic oil tank (51) is arranged on the clamping frame (31), the hydraulic push rods (55) are vertically arranged on the main clamping frame (342) in a symmetrical manner, the hydraulic oil in the left and right hydraulic push rods (55) flows through the hydraulic oil tank (51) as an intermediary, an auxiliary push clamp (56) is fixed at the output end of the hydraulic push rod (55), the auxiliary push clamp (56) is located on the inner side of the clamping group (34) and is controlled to be extended and retracted by the hydraulic push rod (55), a push clamp groove (56a) matched with the auxiliary push clamp (56) is arranged on the inner side of the main clamping frame (342); when the cylinder is not in the central position of the clamping group, the auxiliary push clamp (56) on one side will first contact the cylinder, and the hydraulic oil in the hydraulic push rod (55) on the same side is pressed into the hydraulic push rod (55) on the other side, so that the auxiliary push clamp (56) on the other side is pushed to move forward and contact the other side of the cylinder, and the auxiliary push clamps (56) on the two sides provide auxiliary support for the two sides of the cylinder.

2. A crimping and rotating mechanism according to claim 1, wherein The clamping group (34) is arranged at the distal end of the clamping arm (33), the fixed end of the second rotary hydraulic motor (35) is arranged at the distal end of the clamping arm (33), and the output end is fixed at the central position of the clamping group (34).

3. A crimping and rotating mechanism according to claim 1, wherein The hydraulic push rods (55) on the same side are connected through a distribution pipe (54), the two sides of the hydraulic oil tank (51) are symmetrically connected with main oil pipes (52), and the front ends of the main oil pipes (52) are connected with the central position of the distribution pipe (54) through rotary joints (53).

4. A crimping and rotating mechanism according to claim 3, wherein A piston (511) is matched and arranged in the hydraulic oil tank (51), the piston (511) is connected in the hydraulic oil tank (51) through a spring (512), an oil cavity is formed between the piston (511) and the bottom wall of the hydraulic oil tank (51), and the main oil pipe (52) is connected with the oil cavity.

5. A crimping and rotating mechanism according to claim 1, wherein Two slide grooves (36) are horizontally and symmetrically arranged on the front side of the clamping frame (31), slide blocks (39) matched with the slide grooves (36) are fixed on the rear side of the clamping movable seat (32) in a symmetrical manner, the clamping movable seat (32) is directionally sleeved in the slide groove (36) through the slide block (39), and the two clamping movable seats (32) are connected through the telescopic hydraulic cylinder (4), the telescopic hydraulic cylinder (4) controls the reverse movement of the two clamping movable seats (32), and the mutual moving away and approaching of the clamping group (34) is realized.

6. A crimping and rotating mechanism according to claim 1, wherein Pressure sensors are symmetrically arranged on the inner side of the main clamping frame (342), and the pressure sensors monitor the stress received by the two ends of the main clamping frame (342) when the main clamping frame (342) clamps the cylinder.

7. A crimping and rotating mechanism according to claim 3, wherein The position of the main oil pipe (52) close to the hydraulic oil tank (51) is arranged in the structure of a telescopic pipe section, and the telescopic pipe section is matched to complete the telescopic movement when the telescopic hydraulic cylinder (4) controls the clamping group (34) to move close to or away from.

8. A crimping and rotating mechanism according to claim 1, wherein The inner side of the main clamping frame (342) is provided with clamping grooves of different diameters, the clamping grooves of small diameters are arranged in the clamping grooves of large diameters, and clamping of cylinders of different diameters is realized.

9. A crimping and rotating mechanism according to claim 1, wherein The clamping arm (33) is provided with a yielding groove (38).

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