Counterweight positioning device and engineering machinery

Abstract

The invention relates to the technical field of engineering machinery, and discloses a counterweight positioning device and engineering machinery, and the counterweight positioning device comprises a driving device and an abutting piece. The driving device is used for being arranged on a getting-off platform with a balance weight placing area. The abutting piece is connected with the driving device, the driving device is suitable for driving the abutting piece to move between a first position and a second position, and when the abutting piece moves from the first position to the second position, the abutting piece can abut against the side face of the balance weight located over the balance weight containing area so that the balance weight can vertically descend. When the counter weight is placed on the getting-off platform, the abutting piece slides relatively along the side face of the counter weight, so that it is guaranteed that the counter weight vertically descends, the counter weight can be accurately placed in the counter weight placing area on the getting-off platform only through one operator, additional personnel assistance is not needed, and labor is saved.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a counterweight positioning device and engineering machinery. Background Art

[0002] Construction machinery refers to the general term for construction machinery used in engineering construction, among which cranes are commonly used construction machinery. Cranes refer to multi-action lifting machinery that vertically lifts and horizontally transports heavy objects within a certain range, and include an onboard part and an offboard part. The onboard part includes an onboard platform, a lifting mechanism, and a slewing mechanism. The lifting mechanism is arranged on the slewing mechanism, and the slewing mechanism is arranged on the onboard platform. The lifting mechanism is used to lift and lower cargo. The slewing mechanism is used to drive the lifting mechanism to rotate, so as to cooperate with the lifting mechanism to adjust the position of cargo. The offboard part includes an offboard platform, and a counterweight placement area for placing counterweights is arranged on the offboard platform. When using a crane, the counterweight needs to be accurately placed in the counterweight placement area. When placing the counterweight, the counterweight is used as cargo, and the lifting mechanism is used to lift the counterweight, and the slewing mechanism is used to move the counterweight to the top of the counterweight placement area, and then the lifting mechanism lowers the counterweight until the counterweight is placed in the counterweight placement area on the offboard part.

[0003] However, after the counterweight is hoisted into the air by the lifting mechanism, it will swing back and forth, making it difficult to ensure that the counterweight is completely vertically lowered and located exactly in the counterweight placement area on the unloading part when the lifting mechanism lowers the counterweight. At least two people need to manually intervene when the counterweight is lowered to ensure that the counterweight is exactly lowered to the counterweight placement area. That is, one operator is required to lower the counterweight, and the other two people assist in positioning, which consumes a lot of manpower.

[0004] Therefore, how to solve or improve the problem of high labor consumption when lifting counterweights in related technologies has become an important technical problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, the present application provides a counterweight positioning device and engineering machinery to solve or improve the problem of high labor consumption when lifting counterweights.

[0006] In a first aspect, the present application provides a counterweight positioning device, comprising:

[0007] A drive device is used to be arranged on an unloading platform having a counterweight placement area;

[0008] An abutment member is connected to the driving device, and the driving device is suitable for driving the abutment member to move between a first position and a second position, wherein when the abutment member moves from the first position to the second position, the abutment member can abut against the side of the counterweight located directly above the counterweight placement area so that the counterweight can drop vertically.

[0009] Optionally, the first end of the abutment member is hinged to the disembarkation platform, and the driving device is suitable for driving the second end of the abutment member to rotate between the first position and the second position, wherein when the second end of the abutment member rotates from the first position to the second position, the second end of the abutment member can abut against the side of the counterweight located directly above the counterweight placement area, so that the counterweight can descend vertically.

[0010] Optionally, the driving device is a piston cylinder, the cylinder body of the piston cylinder is hinged to the disembarkation platform, the piston rod of the piston cylinder is hinged to the abutment, and the piston rod of the piston cylinder is extended and retracted to drive the abutment to rotate.

[0011] Optionally, the abutment member comprises:

[0012] A rocker, a first end of which is hinged to the disembarkation platform, and the driving device is connected to the rocker;

[0013] A roller is rotatably connected to the second end of the rocker, and the driving device is suitable for driving the rocker to rotate so that the roller rotates between the first position and the second position, wherein when the roller rotates from the first position to the second position, the roller can abut against the side of the counterweight located directly above the counterweight placement area, and when the counterweight is descending to the counterweight placement area, the roller can roll along the counterweight so that the counterweight can descend vertically.

[0014] Optionally, the counterweight positioning device further comprises:

[0015] A limit pin is connected to the disembarkation platform, an arc groove is provided on the abutment, the limit pin is inserted in the arc groove and is slidably connected to the arc groove, when the second end of the abutment is rotated to the first position, the limit pin is limit-connected to the first end of the arc groove, and when the second end of the abutment is rotated to the second position, the limit pin is limit-connected to the second end of the arc groove.

[0016] Optionally, the counterweight positioning device further comprises:

[0017] a position sensing element, disposed in the counterweight placement area, the position sensing element being used to detect whether the counterweight is located at a preset position, and when the counterweight is located at the preset position, the counterweight is located on a moving track of the second end of the abutment member;

[0018] The first control module is communicatively connected to the position sensing element and the driving device, respectively, so that when the position sensing element detects that the counterweight is located at the preset position, the first control module controls the driving device to drive the second end of the abutment member to rotate from the first position to the second position.

[0019] Optionally, at least two abutment members are provided, the driving devices are connected to the abutment members one-to-one, each driving device is provided on the disembarkation platform, and each abutment member can abut against the side of the counterweight located directly above the counterweight placement area so that the counterweight can descend vertically.

[0020] In the second aspect, the present application also provides an engineering machinery, comprising: a lifting mechanism, any of the counterweight positioning devices described above, a rotating mechanism arranged on the upper platform and a counterweight placement area arranged on the lower platform, the counterweight placement area being suitable for placing the counterweight, the lifting mechanism being connected to the rotating mechanism, the rotating mechanism being suitable for driving the lifting mechanism to rotate on the upper platform, and the lifting mechanism being suitable for lifting objects.

[0021] Optionally, the lifting mechanism comprises:

[0022] A base connected to the slewing mechanism, wherein the slewing mechanism is suitable for driving the base to rotate on the boarding platform;

[0023] A support arm, a first end of which is hinged to the base;

[0024] A driving mechanism, disposed on the base, connected to the support arm and used to drive the support arm to rotate around the first end of the support arm;

[0025] A winch, arranged on the base;

[0026] A rope, a first end of which is connected to the winch, and a second end of which is passed through the second end of the arm and is used to tie a heavy object;

[0027] An angle sensing element is disposed on the base, and is used to detect the angle between the support arm and the base;

[0028] The second control module is respectively connected to the angle sensing element and the driving mechanism for communication, so that when the driving mechanism drives the support arm to rotate around the first end of the support arm and the angle between the support arm and the base is a first preset angle, the second control module controls the driving mechanism to stop driving.

[0029] Optionally, the slewing mechanism comprises:

[0030] A slewing platform, the lifting mechanism is connected to the slewing platform, and the slewing platform is rotatably connected to the vehicle loading platform via a slewing bearing;

[0031] A power device, arranged on the vehicle boarding platform, the power device is suitable for driving the rotary platform to rotate on the vehicle boarding platform;

[0032] A rotary encoder is arranged on the rotating platform, and is used to detect the rotation angle of the rotating platform; a third control module is communicated with the rotary encoder and the power device respectively, so that when the power device drives the rotating platform to rotate on the boarding platform and the rotating platform rotates a second preset angle, the third control module controls the power device to stop driving.

[0033] The present application provides a counterweight positioning device, comprising a driving device and an abutment. The driving device is arranged on a dismounting platform having a counterweight placement area. The abutment is connected to the driving device, and the driving device can be used to drive the abutment to move close to or away from the top of the counterweight placement area. Under the drive of the driving device, the abutment moves between a first position and a second position. After the counterweight is hoisted to a specified position, the counterweight is located on the trajectory of the abutment moving from the first position to the second position. The operator uses the driving device to drive the abutment to move to the second position until the abutment moves to the second position. In this process, the abutment first abuts against the side of the counterweight and then pushes the counterweight to move to the top of the counterweight placement area. Under the action of the deadweight of the counterweight, the abutment remains against the side of the counterweight. At this time, the counterweight is lowered, and the abutment slides relatively along the side of the counterweight, thereby ensuring that the counterweight descends vertically until it accurately descends to the counterweight placement area on the dismounting platform. In this way, only one operator is needed to accurately place the counterweight in the counterweight placement area on the dismounting platform, without the need for additional personnel assistance, thus saving labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic diagram of the structure of an engineering machinery according to an embodiment of the present application;

[0036] Figure 2 for Figure 1 An enlarged schematic diagram of point A is shown;

[0037] Figure 3This is a schematic diagram of the structure of an engineering machinery after hoisting and weighting according to an embodiment of the present application;

[0038] Figure 4 for Figure 3 The enlarged schematic diagram of point B is shown;

[0039] Figure 5 for Figure 3 The enlarged schematic diagram of point C is shown;

[0040] Figure 6 This is a schematic diagram of the structure of an engineering machinery with hidden hoisted counterweight according to an embodiment of the present application;

[0041] Figure 7 for Figure 6 An enlarged schematic diagram of point D is shown.

[0042] Description of reference numerals:

[0043] 1. Driving device; 2. Abutment; 21. Rocker; 22. Roller; 3. Limit pin; 4. Arc groove; 5. Position sensing element; 6. Getting on platform; 7. Lifting mechanism; 71. Base; 72. Support arm; 73. Rope; 74. Angle sensing element; 8. Counterweight placement area; 9. Rotating mechanism; 91. Rotating platform; 92. Rotary encoder; 10. Counterweight; 11. Getting off platform. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0045] Combine the following Figures 1 to 7 , describing an embodiment of the present application.

[0046] According to an embodiment of the present application, on the one hand, a positioning device for a counterweight 10 is provided, comprising a driving device 1 and an abutment member 2. The driving device 1 is disposed on a dismounting platform 11, and the abutment member 2 is connected to the driving device 1. The driving device 1 can be used to drive the abutment member 2 to move closer to or away from the top of the counterweight placement area 8. Driven by the driving device 1, the abutment member 2 moves between a first position and a second position.

[0047] For the case where the positioning device of the counterweight 10 is arranged on the unloading platform 11 of the crane. The abutment 2 is normally located at the first position. The operator uses the lifting mechanism 7 and the slewing mechanism 9 to lift the counterweight 10 to the specified position. At this time, the counterweight 10 is located on the trajectory of the abutment 2 moving from the first position to the second position. Then the operator uses the driving device 1 to drive the abutment 2 to move to the second position until the abutment 2 moves to the second position. In this process, the abutment 2 first abuts against the side of the counterweight 10 and then pushes the counterweight 10 to move to the top of the counterweight placement area 8.

[0048] After that, the operator uses the lifting mechanism 7 to lower the counterweight 10. Under the action of the deadweight of the counterweight 10, the abutment member 2 remains in contact with the side of the counterweight 10. During the lowering process of the counterweight 10, the abutment member 2 slides relatively along the side of the counterweight 10, thereby ensuring that the counterweight 10 descends vertically until it accurately descends to the counterweight placement area 8 on the disembarkation platform 11. In this way, only one operator is required to accurately place the counterweight 10 in the counterweight placement area 8 on the disembarkation platform 11, without the need for additional personnel assistance, thus saving labor.

[0049] After the counterweight 10 is placed in the counterweight placement area 8, the driving device 1 is used to drive the abutment member 2 to move from the second position back to the first position.

[0050] As an optional embodiment, the abutment member 2 is rod-shaped and has a first end and a second end. The first end of the abutment member 2 is hinged on the disembarkation platform 11, so that the second end of the abutment member 2 can rotate around its first end. The driving device 1 is connected to the disembarkation platform 11 and connected to the abutment member 2. The driving device 1 can drive the abutment member 2 to rotate around the first end of the abutment member 2, so that the second end of the abutment member 2 rotates between the first position and the second position, that is, the abutment member 2 moves between the first position and the second position.

[0051] Specifically, the operator uses the lifting mechanism 7 and the slewing mechanism 9 to lift the counterweight 10 to the designated position. The operator uses the driving device 1 to drive the second end of the abutment 2 to move to the second position until the second end of the abutment 2 rotates to the second position. During this process, the second section of the abutment 2 first abuts against the side of the counterweight 10 and then pushes the counterweight 10 to move directly above the counterweight placement area 8. Thereafter, the operator uses the lifting mechanism 7 to lower the counterweight 10, and under the action of the deadweight of the counterweight 10, the second end of the abutment 2 remains abutted against the side of the counterweight 10. During the descent of the counterweight 10, the second end of the abutment 2 slides relatively along the side of the counterweight 10, thereby ensuring that the counterweight 10 descends vertically until it accurately descends to the counterweight placement area 8 on the disembarkation platform 11.

[0052] With this arrangement, the first end of the abutment member 2 is hinged to the disembarkation platform 11 to provide a certain supporting force, thereby preventing the force of the counterweight 10 on the abutment member 2 from being completely borne by the drive device 1, thereby reducing the bearing pressure of the drive device 1.

[0053] Further, the driving device 1 can be a piston cylinder. The piston cylinder includes a cylinder body, a piston slidably disposed in the cylinder body, and a piston rod connected to the piston and extending out of the cylinder body. The cylinder body of the piston cylinder is hinged to the disembarkation platform 11, so that the cylinder body of the piston cylinder can rotate around the hinge between the disembarkation platform 11. The end of the piston rod of the piston cylinder away from the piston is hinged to the abutment 2, so that the piston rod can rotate around the hinge between the abutment 2.

[0054] In this way, the piston rod of the piston cylinder can be extended and retracted to drive the abutment member 2 to rotate around the hinge between its first end and the disembarkation platform 11, so that the second end of the abutment member 2 can rotate between the first position and the second position, making the control simpler and more convenient.

[0055] The piston cylinder can be a hydraulic cylinder or a pneumatic cylinder.

[0056] In an optional embodiment, the abutment member 2 includes a rocker 21 and a roller 22. The first end of the rocker 21 is hinged to the disembarkation platform 11, and the driving device 1 is connected to the rocker 21, so that the driving device 1 can drive the rocker 21 to rotate around its first end. The roller 22 is rotatably connected to the second end of the rocker 21, so that the roller 22 can rotate at the second end of the rocker 21.

[0057] The operator uses the lifting mechanism 7 and the slewing mechanism 9 to lift the counterweight 10 to the specified position. The operator uses the driving device 1 to drive the rocker 21 to rotate, so that the roller 22 rotates from the first position to the second position. During the rotation process, the roller 22 first abuts against the side of the counterweight 10 and then pushes the counterweight 10 to move directly above the counterweight placement area 8. Thereafter, the operator uses the lifting mechanism 7 to lower the counterweight 10. Under the action of the deadweight of the counterweight 10, the side of the counterweight 10 remains against the roller 22. During the descent of the counterweight 10, the roller 22 rolls along the side of the counterweight 10, thereby ensuring that the counterweight 10 descends vertically until it accurately drops to the counterweight placement area 8 on the disembarkation platform 11.

[0058] This arrangement reduces the friction between the abutment member 2 and the counterweight 10 , thereby lowering the descending resistance of the counterweight 10 .

[0059] In an optional embodiment, the positioning device of the counterweight 10 further includes a limit pin 3, which is connected to the disembarkation platform 11. An arc groove 4 is provided on the abutment 2, and when the first end of the abutment 2 is hinged to the disembarkation platform 11, the limit pin 3 is inserted into the arc groove 4. When the abutment 2 rotates around its first end, the limit pin 3 slides relatively along the arc groove 4.

[0060] When the second end of the abutment member 2 rotates from the first position to the second position, the limiting groove moves from the first end of the arc groove 4 to the second end relative to the arc groove 4 and abuts against the second end of the arc groove 4, thereby limiting the second end of the abutment member 2 from continuing to rotate.

[0061] When the second end of the abutment member 2 rotates from the second position to the first position, the limiting groove moves from the second end of the arc groove 4 to the first end relative to the arc groove 4 and abuts against the first end of the arc groove 4, thereby limiting the second end of the abutment member 2 from continuing to rotate.

[0062] Thereby, the abutment member 2 is limited in position, and over-rotation of the abutment member 2 is avoided.

[0063] It is worth noting that the limit pin 3 is fixedly arranged, and the above-mentioned "the limit pin 3 slides along the arc groove 4" refers to relative sliding, not the real sliding of the limit pin 3. The limit pin 3 can be fixed as one body with the disembarkation platform 11, or can be detachably connected.

[0064] As an optional embodiment, the positioning device of the counterweight 10 further includes: a position sensing element 5 and a first control module. The position sensing element 5 is arranged in the counterweight placement area 8, and when the counterweight 10 is located at a preset position, the position sensing element 5 can sense the counterweight 10. The first control module is connected in communication with the position sensing element 5, and is also connected in communication with the driving device 1.

[0065] The position sensing element 5 may be a proximity switch. When the counterweight 10 is hoisted to the designated position above the counterweight placement area 8, the distance between the counterweight 10 and the proximity switch reaches the sensing distance of the proximity switch, so that the proximity switch senses that the counterweight 10 has reached the designated position. The proximity switch sends a signal to the first control module.

[0066] After receiving the signal from the proximity switch that the counterweight 10 has reached the specified position, the first control module controls the driving device 1 to drive the abutment member 2 to move to the second position until the abutment member 2 moves to the second position. During this process, the abutment member 2 first abuts against the side of the counterweight 10 and then pushes the counterweight 10 to move to the top of the counterweight placement area 8.

[0067] After that, the operator uses the lifting mechanism 7 to lower the counterweight 10. Under the action of the deadweight of the counterweight 10, the second end of the abutment 2 remains against the side of the counterweight 10. During the process of the counterweight 10 being lowered, the second end of the abutment 2 slides relatively along the side of the counterweight 10, thereby ensuring that the counterweight 10 descends vertically until it accurately descends to the counterweight placement area 8 on the unloading platform 11. In this way, after the operator uses the lifting mechanism 7 and the slewing mechanism 9 to lift the counterweight 10 to the specified position, the abutment 2 can be automatically moved to the second position without the operator having to operate the driving device 1, which makes the operation more convenient.

[0068] Moreover, only when the counterweight 10 reaches the specified position can the proximity switch be triggered, thereby starting the drive device, to avoid starting the drive device in other situations, causing the abutment 2 to move to the second position, causing the counterweight 10 to hit the abutment 2 when it descends, causing damage to the abutment 2 and the drive device.

[0069] As an optional embodiment, at least two abutment members 2 are provided. The number of driving devices 1 is the same as that of the abutment members 2, each driving device 1 is provided on the disembarkation platform 11, and each abutment member 2 is connected to a corresponding driving device 1, so that each driving device 1 can drive its corresponding abutment member 2 to move.

[0070] After the operator uses the lifting mechanism 7 and the slewing mechanism 9 to lift the counterweight 10 to the designated position above the counterweight placement area 8, the operator uses the driving device 1 to drive the corresponding abutment 2 to move, and each abutment 2 first abuts against the side of the counterweight 10 and then pushes the counterweight 10 to move directly above the counterweight placement area 8. Thereafter, the operator uses the lifting mechanism 7 to lower the counterweight 10, and under the action of the deadweight of the counterweight 10, each abutment 2 keeps abutting against the side of the counterweight 10, thereby ensuring that the counterweight 10 is lowered vertically until it is accurately placed in the counterweight placement area 8 on the unloading platform 11.

[0071] In this way, a plurality of abutting members 2 abut against the counterweight 10 at the same time, and the positioning and limiting of the counterweight 10 are more reliable.

[0072] In some embodiments, two abutting members 2 may be provided.

[0073] According to an embodiment of the present application, on the other hand, there is also provided an engineering machine, comprising any of the above positioning devices for counterweight 10. The technical effect brought by the engineering machine is consistent with that of the positioning device for counterweight 10, so it will not be described in detail.

[0074] The construction machinery may be, but is not limited to, a crane.

[0075] In the case where the construction machinery is a crane, the crane includes: a lifting mechanism 7, an upper vehicle platform 6, a slewing mechanism 9, an upper vehicle platform 6 and a counterweight placement area 8. The crane is divided into an upper vehicle part and an lower vehicle part, the upper vehicle part is provided with an upper vehicle platform 6, and the lower vehicle part is provided with an lower vehicle platform 11.

[0076] The slewing mechanism 9 is arranged on the vehicle loading platform 6, and the lifting mechanism 7 is arranged on the slewing mechanism 9. The slewing mechanism 9 can drive the lifting mechanism 7 to rotate on the surface of the vehicle loading platform 6, that is, to realize the horizontal rotation of the lifting mechanism 7. The lifting mechanism 7 can hoist the heavy objects and lift the heavy objects vertically up and down in a direction perpendicular to the vehicle loading platform 6.

[0077] Specifically, the lifting mechanism 7 includes a base 71, a support arm 72, a driving mechanism, a winch and a rope 73. The base 71 is connected to the slewing mechanism 9, so that the slewing mechanism 9 can drive the base 71 to rotate horizontally. The first end of the support arm 72 is hinged to the base 71, so that the support arm 72 can rotate around its first end. The driving mechanism is arranged on the base 71 and connected to the support arm 72. The driving mechanism can act on the support arm 72 to drive the support arm 72 to rotate around its first end. When the driving mechanism drives the support arm 72 to rotate, the support arm 72 flips relative to the vehicle boarding platform 6.

[0078] The driving mechanism can be a combination of an electric motor and a transmission, wherein the electric motor is arranged on the base 71 and is connected to the support arm 72 through the transmission, and the electric motor can be used to drive the support arm 72 to rotate. The driving mechanism can also be a combination of a hydraulic pump and a hydraulic valve.

[0079] The winch is arranged on the base 71, and the first end of the rope 73 is connected to the winch, so that the winch can roll up and release the rope 73. After the second end of the rope 73 is extended from the first end to the second end along the length direction of the support arm 72, it is passed around the second end of the support arm 72 and then extends vertically downward. In this way, after a heavy object is tied to the second end of the rope 73, the rope 73 is rolled up or released using the winch, and the heavy object can be hoisted and raised and lowered.

[0080] In some embodiments, the lifting mechanism 7 further includes an angle sensing element 74 and a second control module. The angle sensing element 74 may be an angle sensor. The angle sensor is disposed on the base 71 and can detect the angle between the support arm 72 and the base 71. The second control module is communicatively connected to the angle sensor, and the second control module is communicatively connected to the driving mechanism.

[0081] After the driving mechanism drives the support arm 72 to rotate around its first end, the angle sensor detects the angle between the support arm 72 and the base 71 in real time, and then sends the angle information to the second control module. When the angle between the support arm 72 and the base 71 is the first preset angle, the second control module immediately controls the driving mechanism to stop driving, so that the angle between the support arm 72 and the base 71 remains at the first preset angle.

[0082] The slewing mechanism 9 includes a slewing platform 91 and a power device. The slewing platform 91 is connected to the vehicle platform 6 through a slewing bearing, so that the slewing platform 91 can rotate horizontally relative to the vehicle platform 6. The base 71 of the lifting mechanism 7 is connected to the slewing platform 91, so that the slewing platform 91 can drive the lifting mechanism 7 to rotate horizontally. The power device is arranged on the vehicle platform 6 and is connected to the slewing platform 91, so that the power device can drive the slewing platform 91 to rotate.

[0083] The power device may be a combination of an electric motor and a transmission mechanism, and the electric motor is connected to the rotating platform 91 through the transmission mechanism, so that the rotating platform 91 can be driven to rotate by using the electric motor to transmit power to the rotating platform 91 through the transmission mechanism.

[0084] In this way, the revolving platform 91 rotates to achieve the left-right movement of the goods, the support arm 72 flips to achieve the front-back movement of the goods, and the winch retracts and releases the rope 73 to achieve the up-and-down movement of the goods, thereby achieving the adjustment of the position of the goods.

[0085] In some embodiments, the slewing mechanism 9 further includes: a slewing encoder 92 and a third control module. The slewing encoder 92 is disposed on the slewing platform 91 and is used to detect the rotation angle of the slewing platform 91 relative to the vehicle boarding platform 6. The third control module is connected to the power device for communication, and the third control module is connected to the slewing encoder 92 for communication.

[0086] After the power device drives the rotating platform 91 to rotate, the rotary encoder 92 detects the rotation angle of the rotating platform 91 relative to the vehicle loading platform 6 in real time, and then sends the angle information to the third control module. After the rotating platform 91 rotates a second preset angle, the third control module controls the power device to stop driving.

[0087] In a combined embodiment, when the counterweight 10 is located at a specified position, the angle between the support arm 72 and the base 71 is set to a first preset angle, and the rotation angle of the rotary platform 91 relative to the vehicle loading platform 6 is set to 0 degrees. In this way, the operator first uses the power device to drive the rotary platform 91 to rotate, and cooperates with the drive mechanism to drive the support arm 72 to rotate, so as to move the second end of the rope 73 to the top of the counterweight 10 to be installed. At this time, the rotary encoder 92 detects that the rotary platform 91 has rotated through the second preset angle.

[0088] After the second end of the rope 73 is lowered by the winch, the counterweight 10 to be installed is tied to the second end of the rope 73, and then the counterweight 10 is hoisted by the winch. The operator can then start the reset function, so that the power device drives the slewing platform 91 to rotate and the drive mechanism drives the support arm 72 to rotate.

[0089] For the rotation of the rotating platform 91, the rotary encoder 92 detects the rotation angle of the rotating platform 91 in real time. After the power device drives the rotating platform 91 to rotate the second preset angle, the rotation angle of the vehicle loading platform 6 returns to 0 degrees, and the third control module controls the power device to stop driving.

[0090] For the rotation of the support arm 72, the angle sensor detects in real time the angle between the support arm 72 and the base 71. When the angle between the support arm 72 and the base 71 reaches a first preset angle, the second control module controls the driving mechanism to stop driving.

[0091] In this way, the counterweight 10 can be located directly above the designated position, thereby achieving automatic adjustment of the position of the counterweight 10 .

[0092] Afterwards, the operator uses the winch to lower the counterweight 10 to the designated position, and the distance between the counterweight 10 and the proximity switch reaches the sensing distance of the proximity switch, so that the proximity switch senses that the counterweight 10 has reached the designated position. The proximity switch sends a signal to the first control module.

[0093] When the counterweight 10 is hoisted to the designated position above the counterweight placement area 8, the distance between the counterweight 10 and the proximity switch reaches the sensing distance of the proximity switch, so that the proximity switch senses that the counterweight 10 has reached the designated position. The proximity switch sends a signal to the first control module.

[0094] After receiving the signal from the proximity switch that the counterweight 10 has reached the specified position, the first control module controls the driving device 1 to drive the abutment member 2 to move to the second position until the abutment member 2 moves to the second position. During this process, the abutment member 2 first abuts against the side of the counterweight 10 and then pushes the counterweight 10 to move to the top of the counterweight placement area 8.

[0095] After that, the operator uses the lifting mechanism 7 to lower the counterweight 10. Under the action of the deadweight of the counterweight 10, the second end of the abutment member 2 remains in contact with the side of the counterweight 10. During the process of the counterweight 10 descending, the second end of the abutment member 2 slides relatively along the side of the counterweight 10, thereby ensuring that the counterweight 10 descends vertically until it accurately descends to the counterweight placement area 8 on the unloading platform 11. Thus, the installation of the counterweight 10 is completed.

[0096] In this way, only one operator is needed to accurately place the counterweight 10 in the counterweight placement area 8 on the unloading platform 11, without the need for additional personnel assistance, thus saving labor. Moreover, the existence of the rotary encoder 92 and the angle sensor further reduces the difficulty of the operator's operation.

[0097] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the present application.

Claims

1. A counterweight positioning device, characterized in that: include: A driving device (1) is used to be arranged on an alighting platform (11) having a counterweight placement area (8); An abutment member (2) is connected to the driving device (1), and the driving device (1) is suitable for driving the abutment member (2) to move between a first position and a second position, wherein when the abutment member (2) moves from the first position to the second position, the abutment member (2) can abut against the side of the counterweight (10) located directly above the counterweight placement area (8), so that the counterweight (10) can descend vertically.

2. The counterweight positioning device according to claim 1, characterized in that: The first end of the abutment member (2) is hinged to the disembarkation platform (11), and the driving device (1) is suitable for driving the second end of the abutment member (2) to rotate between the first position and the second position, wherein when the second end of the abutment member (2) rotates from the first position to the second position, the second end of the abutment member (2) can abut against the side of the counterweight (10) located directly above the counterweight placement area (8), so that the counterweight (10) can descend vertically.

3. The counterweight positioning device according to claim 2, characterized in that: The driving device (1) is a piston cylinder, the cylinder body of the piston cylinder is hinged to the disembarkation platform (11), the piston rod of the piston cylinder is hinged to the abutment member (2), and the piston rod of the piston cylinder is extended and retracted to drive the abutment member (2) to rotate.

4. The counterweight positioning device according to claim 2, characterized in that: The abutment member (2) comprises: A rocker (21), a first end of which is hinged to the disembarkation platform (11), and the driving device (1) is connected to the rocker (21); A roller (22) is rotatably connected to the second end of the rocker (21), and the driving device (1) is suitable for driving the rocker (21) to rotate so that the roller (22) rotates between the first position and the second position, wherein when the roller (22) rotates from the first position to the second position, the roller (22) can abut against the side of the counterweight (10) located directly above the counterweight placement area (8), and when the counterweight (10) is descending toward the counterweight placement area (8), the roller (22) can roll along the counterweight (10) so that the counterweight (10) can descend vertically.

5. The counterweight positioning device according to claim 2, characterized in that: The counterweight (10) positioning device further comprises: A limit pin (3) is connected to the disembarkation platform (11), and an arc groove (4) is provided on the abutment (2). The limit pin (3) is inserted into the arc groove (4) and is slidably connected to the arc groove (4). When the second end of the abutment (2) is rotated to the first position, the limit pin (3) is limit-connected to the first end of the arc groove (4); when the second end of the abutment (2) is rotated to the second position, the limit pin (3) is limit-connected to the second end of the arc groove (4).

6. The counterweight positioning device according to claim 1, characterized in that: The counterweight (10) positioning device further comprises: a position sensing element (5) disposed in the counterweight placement area (8), the position sensing element (5) being used to detect whether the counterweight (10) is located at a preset position, and when the counterweight (10) is located at the preset position, the counterweight (10) is located on a moving track of the second end of the abutment member (2); The first control module is respectively connected to the position sensing element (5) and the driving device (1) for communication, so that when the position sensing element (5) detects that the counterweight (10) is located at the preset position, the first control module controls the driving device (1) to drive the second end of the abutment member (2) to rotate from the first position to the second position.

7. The counterweight positioning device according to claim 1, characterized in that: At least two abutment members (2) are provided, the driving devices (1) are connected to the abutment members (2) in a one-to-one correspondence, each of the driving devices (1) is provided on the disembarkation platform (11), and each of the abutment members (2) can abut against the side of the counterweight (10) located directly above the counterweight placement area (8), so that the counterweight (10) can descend vertically.

8. An engineering machine, characterized in that: include: A lifting mechanism (7), a counterweight (10) positioning device as claimed in any one of claims 1 to 7, a slewing mechanism (9) arranged on an upper platform (6), and a counterweight placement area (8) arranged on an lower platform (11), wherein the counterweight placement area (8) is suitable for placing the counterweight (10), the lifting mechanism (7) is connected to the slewing mechanism (9), the slewing mechanism (9) is suitable for driving the lifting mechanism (7) to rotate on the upper platform (6), and the lifting mechanism (7) is suitable for lifting objects.

9. The construction machine according to claim 8, characterized in that: The lifting mechanism (7) comprises: A base (71) connected to the rotating mechanism (9), wherein the rotating mechanism (9) is suitable for driving the base (71) to rotate on the boarding platform (6); A support arm (72), wherein a first end of the support arm (72) is hinged to the base (71); a driving mechanism, arranged on the base (71), the driving mechanism being connected to the support arm (72) and used for driving the support arm (72) to rotate around a first end of the support arm (72); A winch, arranged on the base (71); A rope (73), wherein a first end of the rope (73) is connected to the winch, and a second end of the rope (73) is passed around the second end of the support arm (72) and is used to tie a heavy object; An angle sensing element (74) is arranged on the base (71), and the angle sensing element (74) is used to detect the angle between the support arm (72) and the base (71); The second control module is respectively connected to the angle sensing element (74) and the driving mechanism for communication, so that when the driving mechanism drives the support arm (72) to rotate around the first end of the support arm (72) and the angle between the support arm (72) and the base (71) is a first preset angle, the second control module controls the driving mechanism to stop driving.

10. The construction machine according to claim 8, characterized in that: The rotary mechanism (9) comprises: A revolving platform (91), the lifting mechanism (7) being connected to the revolving platform (91), and the revolving platform (91) being rotatably connected to the boarding platform (6) via a revolving bearing; A power device is arranged on the boarding platform (6), and the power device is suitable for driving the rotating platform (91) to rotate on the boarding platform (6); A rotary encoder (92) is arranged on the rotary platform (91), and the rotary encoder (92) is used to detect the rotation angle of the rotary platform (91); a third control module is respectively connected to the rotary encoder (92) and the power device in communication, so that when the power device drives the rotary platform (91) to rotate on the boarding platform (6), and the rotary platform (91) rotates to a second preset angle, the third control module controls the power device to stop driving.

Images