Counterweight assembly and working machine

Abstract

The present application relates to the field of working machine, and discloses a counterweight assembly and a working machine.The counterweight assembly comprises a connecting rod, the connecting rod extends along a first direction, the connecting rod is provided with a connecting hole, the connecting hole is used for being connected with a positioning hole of a counterweight mounting frame, an axis of the connecting hole intersects with the first direction, and an outer side wall of the connecting rod is provided with an annular groove; a base and a clamping piece, the base is provided with a mounting hole for the connecting rod to pass through, the mounting hole extends along the first direction, the clamping piece is connected with the base, the clamping piece is arranged in the annular groove and is in sliding fit with the annular groove, and the clamping piece is used for limiting the annular groove in the first direction.The clamping piece does not form circumferential limitation on the connecting rod when limiting the connecting rod in the first direction, so that the connecting rod can freely rotate in the mounting hole, the orientation of the connecting hole is adjusted, the parallelism error between the axes of the connecting hole and the positioning hole is reduced, and the problem that the first positioning piece cannot be inserted into the connecting hole and the positioning hole is avoided or improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of working machines, in particular to a counterweight assembly and a working machine. BACKGROUND

[0002] During operation, working machines such as cranes need to hang different counterweights to meet different working conditions.

[0003] In the related art, a working machine includes a counterweight mounting frame, a counterweight assembly, and a lifting device. The counterweight assembly includes a base and a connecting rod, the connecting rod extends in a vertical direction and is fixedly connected with the base. The connecting rod is provided with a connecting hole, and the counterweight mounting frame is provided with a positioning hole, the positioning hole and the connecting hole are connected by a positioning pin shaft. The lifting device is used to drive the counterweight to lift, so that the connecting hole of the counterweight can be docked with the mounting frame.

[0004] However, due to machining errors, assembly errors, or long-term stress deformation, the parallelism error between the connecting hole on the connecting rod and the positioning hole on the counterweight mounting frame may be large, resulting in the positioning pin shaft being unable to be installed. SUMMARY

[0005] Therefore, the present application provides a counterweight assembly and a working machine to solve or improve the problem that the parallelism error between the connecting hole on the connecting rod and the positioning hole on the counterweight mounting frame is large, resulting in the positioning pin shaft being unable to be installed.

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

[0007] a connecting rod, the connecting rod extends in a first direction, the connecting rod is provided with a connecting hole, the connecting hole is used to connect with a positioning hole of a counterweight mounting frame, an axis of the connecting hole intersects the first direction, and an outer side wall of the connecting rod is provided with an annular groove;

[0008] a base and a clamping piece, the base is provided with a mounting hole for the connecting rod to pass through, the mounting hole extends in the first direction, the clamping piece is connected with the base, the clamping piece is placed in the annular groove and is in sliding fit with the annular groove, and the clamping piece is used to limit the annular groove in the first direction.

[0009] In an optional embodiment, the number of clamping pieces is at least two, and the at least two clamping pieces are distributed in a circumferential direction of the connecting rod.

[0010] In an optional embodiment, the counterweight assembly further includes at least two threaded fasteners, the threaded fasteners pass through the respective clamping pieces and are threadedly connected with the base, and each clamping piece has a corresponding threaded fastener.

[0011] In an alternative embodiment, the counterweight assembly further comprises a pressing member, in the first direction, at least two of the clamping members are arranged between the pressing member and the base, the threaded fastener passes through the pressing member and the corresponding clamping member and is threadedly connected with the base.

[0012] In an alternative embodiment, the mounting hole penetrates through the base along the first direction, in the first direction, the base has a first side and a second side;

[0013] The part of the connecting rod provided with the connecting hole is arranged at the first side of the base, the part of the connecting rod provided with the annular groove is arranged at the second side of the base, and the clamping member is connected to the second side of the base.

[0014] In an alternative embodiment, the surface of the second side of the base is provided with a first recess, the mounting hole penetrates through the bottom of the first recess, the clamping member is arranged in the first recess and connected with the first recess, and the height of the connecting rod protruding from the bottom of the first recess is less than or equal to the depth of the first recess.

[0015] In a second aspect, the present application further provides a working machine comprising a counterweight mounting frame, a first positioning member and a counterweight assembly as described above.

[0016] The counterweight mounting frame is provided with a positioning hole, and the first positioning member passes through the positioning hole and the connecting hole.

[0017] In an alternative embodiment, the working machine further comprises:

[0018] A support seat connected with the counterweight mounting frame, the support seat is in sliding connection with the first positioning member and is used for supporting the first positioning member.

[0019] A position detection device arranged on the support seat or the counterweight mounting frame and used for detecting position information of the first positioning member.

[0020] A control system electrically connected with the position detection device, the control system sends an alarm information when it is determined that the first positioning member is not inserted or pulled out to the right position based on the position information.

[0021] In an alternative embodiment, the working machine further comprises a lifting driving device used for lifting the counterweight assembly, the lifting driving device is electrically connected with the control system, and the control system sends the alarm information to the lifting driving device to control the lifting driving device to keep in a stationary state when it is determined that the first positioning member is not inserted or pulled out to the right position based on the position information.

[0022] And / or, the working machine further comprises an alarm component, the alarm component is electrically connected with the control system, the control system sends the alarm information to the alarm component to control the alarm component to alarm when the first positioning member is not inserted or pulled out to the position based on the position information.

[0023] In an alternative embodiment, the working machine further comprises a limiting member, the limiting member is connected with the first positioning member;

[0024] The support seat is provided with a guide groove extending along the axial direction of the positioning hole, both ends of the guide groove are closed along the axial direction of the positioning hole, and the guide groove penetrates the support seat in a direction perpendicular to the axial direction of the positioning hole;

[0025] The limiting member is slidably arranged in the guide groove along the axial direction of the positioning hole, the portion of the limiting member opposite to the side wall of the guide groove is provided with a clamping groove, and the side wall of the guide groove is arranged in the clamping groove to limit the limiting member in the penetrating direction of the guide groove.

[0026] In an alternative embodiment, the working machine further comprises a second positioning member, the support seat is provided with a first limiting hole and a second limiting hole, the axial lines of the first limiting hole and the second limiting hole both intersect with the sliding path of the limiting member, and the second positioning member is selectively arranged in the first limiting hole and the second limiting hole;

[0027] Under the condition that the first positioning member is inserted into position, the second positioning member is arranged in the first limiting hole and located on the side of the limiting member close to the second limiting hole, and under the condition that the first positioning member is pulled out to position, the second positioning member is arranged in the second limiting hole and located on the side of the limiting member close to the first limiting hole.

[0028] The counterweight assembly provided by the application passes the connecting rod into the mounting hole of the base, and the clamping piece on the base is arranged in the annular groove of the connecting rod, so that the mounting hole can limit the connecting rod in a direction perpendicular to the first direction, and the limiting groove can limit the connecting rod in the first direction, thereby fixing the connecting rod on the base through the cooperation of the mounting hole and the clamping piece.

[0029] In addition, the clamping piece is in sliding fit with the annular groove, so that when the clamping piece limits the connecting rod in the first direction, it does not form circumferential limitation on the connecting rod, so that the connecting rod can rotate freely in the mounting hole, so as to adjust the orientation of the connecting hole and reduce the parallelism error of the axial lines of the connecting hole and the positioning hole, thereby avoiding or improving the problem that the first positioning member cannot be inserted into the connecting hole and the positioning hole.

[0030] The work machine provided by the present application comprises the counterweight assembly provided by the present application, and thus comprises all the advantages of the counterweight assembly. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0032] Figure 1 The structural explosion view of the counterweight assembly provided by the embodiment of the present application;

[0033] Figure 2 The structural schematic view of the connecting rod provided by the embodiment of the present application;

[0034] Figure 3 The front view of the counterweight assembly provided by the embodiment of the present application;

[0035] Figure 4 The partial enlarged view of position I in the view shown in the figure; Figure 3

[0036] Figure 5 The perspective angle schematic view of the counterweight assembly provided by the embodiment of the present application;

[0037] Figure 6 The structural schematic view of the counterweight assembly provided by the embodiment of the present application when installed on a slewing platform;

[0038] Figure 7 The structural schematic view of another counterweight assembly provided by the embodiment of the present application when installed on a slewing platform;

[0039] Figure 8 The partial enlarged view of position II in the view shown in the figure; Figure 7

[0040] The structural schematic view of still another counterweight assembly provided by the embodiment of the present application when installed on a slewing platform; Figure 9

[0041] The partial enlarged view of position III in the view shown in the figure; Figure 10 Figure 9 The structural schematic view of still another counterweight assembly provided by the embodiment of the present application when installed on a slewing platform;

[0042] Figure 11 The partial enlarged view of position IV in the view shown in the figure;

[0043] Figure 12 Figure 11 ​​​An enlarged view of a portion of the view IV;

[0044] Figure 13 A structure diagram of a first positioning member provided in an embodiment of the present application and a support seat connected therewith;

[0045] Figure 14 A structure diagram of a clamping shaft provided in an embodiment of the present application;

[0046] Figure 15 A structure diagram of a counterweight mounting frame provided in an embodiment of the present application.

[0047] Legend of reference signs:

[0048] 1, connecting rod; 101, connecting hole; 102, annular groove; 103, open slot; 2, base; 201, mounting hole; 202, first sink; 203, annular protrusion; 3, clamping member; 4, threaded fastener; 5, pressing member; 6, counterweight mounting frame; 601, positioning hole; 602, clamping hole; 7, first positioning member; 8, support seat; 801, guide groove; 802, first limiting hole; 803, second limiting hole; 804, bent plate; 805, side plate; 9, limiting member; 901, clamping groove; 10, position detection device; 11, second positioning member; 12, clamping shaft; 13, connecting plate; 14, triggering member; 15, rotary platform; X, first direction. DETAILED DESCRIPTION

[0049] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0050] The embodiments of the present application will be described below in connection with Figures 1 to 15 , and a counterweight assembly provided in the embodiments of the present application.

[0051] Specifically, the counterweight assembly comprises a connecting rod 1, a base 2 and a clamping member 3.

[0052] The connecting rod 1 extends along a first direction X, for example, the first direction X is a vertical direction when the counterweight assembly is in a use state. The connecting rod 1 is provided with a connecting hole 101, the connecting hole 101 is used to be connected with a positioning hole 601 of a counterweight mounting frame 6, an axis of the connecting hole 101 intersects with the first direction X, for example, the connecting hole 101 penetrates through the connecting rod 1, and the axis of the connecting hole 101 is perpendicular to the first direction X. An annular groove 102 is arranged on an outer side wall of the connecting rod 1, specifically, the annular groove 102 surrounds the connecting rod 1 in a circumferential direction.

[0053] The base 2 is provided with a mounting hole 201 for the connecting rod 1 to pass through, and the mounting hole 201 extends along the first direction X. The connecting rod 1 passes through the mounting hole 201, and the mounting hole 201 is used to limit the connecting rod 1 along a direction perpendicular to the first direction X. Optionally, the base 2 itself can serve as a counterweight, or other counterweights can be placed on the base 2 to increase the weight of the counterweight assembly.

[0054] The clamping piece 3 is connected to the base 2, for example, the clamping piece 3 can be connected to the base 2 through threaded fasteners 4, or can be welded. The clamping piece 3 is placed in the annular groove 102, and the clamping piece 3 and the annular groove 102 are in sliding fit. The clamping piece 3 is used to limit the annular groove 102 in the first direction X.

[0055] In this embodiment, when installing the connecting rod 1, the counterweight assembly can be lifted by the lifting drive device until the connecting hole 101 on the connecting rod 1 is opposite to the positioning hole 601 on the counterweight mounting frame 6, and the first positioning piece 7 is inserted into the connecting hole 101 and the positioning hole 601. For example, the first positioning piece 7 is provided as a pin shaft.

[0056] If the parallelism error of the axes of the connecting hole 101 and the positioning hole 601 is large, the connecting rod 1 can be rotated in the mounting hole 201 to adjust the parallelism of the axes of the connecting hole 101 and the positioning hole 601, so that the first positioning piece 7 can be inserted into the connecting hole 101 and the positioning hole 601.

[0057] In this way, by inserting the connecting rod 1 into the mounting hole 201 of the base 2, and placing the clamping piece 3 connected to the base 2 in the annular groove 102 of the connecting rod 1, the mounting hole 201 can limit the connecting rod 1 along a direction perpendicular to the first direction X, and the limiting groove can limit the connecting rod 1 along the first direction X, so that the connecting rod 1 is fixed to the base 2 through the combined action of the mounting hole 201 and the clamping piece 3.

[0058] In addition, the clamping piece 3 and the annular groove 102 are in sliding fit, so that when the clamping piece 3 limits the connecting rod 1 in the first direction X, it does not form circumferential limitation on the connecting rod 1, so that the connecting rod 1 can rotate freely in the mounting hole 201, so as to adjust the orientation of the connecting hole 101, reduce the parallelism error of the axes of the connecting hole 101 and the positioning hole 601, and avoid or improve the problem that the first positioning piece 7 cannot be inserted into the connecting hole 101 and the positioning hole 601.

[0059] In some embodiments provided by the present application, the number of clamping pieces 3 is at least two, and the at least two clamping pieces 3 are distributed along the circumference of the connecting rod 1.

[0060] In the embodiment, the at least two clamping members 3 are arranged to limit the annular groove 102 together, which can more evenly disperse the external force received by the connecting rod 1, thereby improving the stability and reliability of the counterweight assembly. Even if one of the clamping members 3 fails, the other clamping members 3 can still play a certain fixing role, reducing the risk of the connecting rod 1 falling off.

[0061] In addition, the at least two clamping members 3 can jointly bear greater load, thereby improving the connection strength between the connecting rod 1 and the base 2.

[0062] In some embodiments provided by the application, the surface of the clamping member 3 towards the bottom of the annular groove 102 is arranged as an arc surface.

[0063] In the embodiment, the arc surface of the clamping member 3 cooperates with the annular groove 102, which can increase the contact area between the clamping member 3 and the annular groove 102 in the circumferential direction of the annular groove 102, thereby more evenly distributing the load between the clamping member 3 and the annular groove 102, reducing the risk of local overload deformation or damage.

[0064] Alternatively, the clamping member 3 can be arranged as a sector ring. The sector ring cooperates with the annular groove 102, which can increase the contact area between the sector ring and the annular groove 102 in the circumferential direction of the annular groove 102, thereby more evenly distributing the load between the sector ring and the annular groove 102, reducing the risk of local overload deformation or damage.

[0065] In addition, the sector ring can be formed by dividing the annular plate. On the one hand, the annular plate can form at least two sector rings, so as to limit the annular groove 102 by the at least two sector rings; on the other hand, the annular plate structure is relatively regular, which is convenient for processing, thereby making the processing difficulty of the sector ring smaller and the processing cost lower.

[0066] In some embodiments provided by the application, the counterweight assembly further comprises at least two threaded fasteners 4. The threaded fastener 4 can be a bolt or a screw.

[0067] The threaded fastener 4 passes through the corresponding clamping member 3 and is threadedly connected with the base 2, that is, the clamping member 3 is provided with a through hole for the threaded fastener 4 to pass through. Each clamping member 3 has a corresponding threaded fastener 4, so that each clamping member 3 can be connected to the base 2 by the corresponding threaded fastener 4.

[0068] In the embodiment, the clamping member 3 is connected to the base 2 by the threaded fastener 4. When the clamping member 3 is damaged due to stress or wear, the threaded fastener 4 can be unscrewed to replace the clamping member 3, without the need to replace the entire connecting rod 1, thereby significantly reducing the replacement cost.

[0069] Optionally, each clamping piece 3 is connected with the base 2 by at least two threaded fasteners 4. By providing at least two threaded fasteners 4 for each clamping piece 3, on the one hand, the connection strength between the clamping piece 3 and the base 2 can be improved, and the possibility of loosening or falling off of the clamping piece 3 can be reduced, and on the other hand, the clamping piece 3 can be prevented from rotating around the threaded fastener 4, so as to improve the stability of the sliding fit between the clamping piece 3 and the annular groove 102.

[0070] In some embodiments provided by the application, the counterweight assembly further comprises a pressing piece 5.

[0071] In the first direction X, at least two clamping pieces 3 are arranged between the pressing piece 5 and the base 2, the threaded fastener 4 passes through the pressing piece 5 and the corresponding clamping piece 3, and is threadedly connected with the base 2.

[0072] In the embodiment, the clamping piece 3 is clamped between the pressing piece 5 and the base 2, and the pressing force of the threaded fastener 4 acts on the clamping piece 3 through the pressing piece 5, so that the problem of deformation of the clamping piece 3 caused by too concentrated pressing load can be reduced.

[0073] In addition, since the annular groove 102 has a spacing with the threaded fastener 4, when the two jointly act on the clamping piece 3, a bending moment is generated on the clamping piece 3, causing the clamping piece 3 to bend. In the embodiment, the threaded fastener 4 acts on the clamping piece 3 through the pressing piece 5, and in the direction perpendicular to the threaded fastener 4, the pressing piece 5 can be closer to the annular groove 102, so that when the pressing piece 5 and the annular groove 102 jointly act on the clamping piece 3, the bending moment on the clamping piece 3 is smaller, thereby solving or improving the problem of easy bending deformation of the clamping piece 3.

[0074] Optionally, the pressing piece 5 is arranged as an annular plate, and the annular plate is sleeved on the connecting rod 1. In this way, the structure of the pressing piece 5 is simple.

[0075] In some embodiments provided by the application, the mounting hole 201 penetrates the base 2 along the first direction X, and the base 2 has a first side and a second side along the first direction X. For example, the first side can be the upper side of the base 2, and the second side can be the lower side of the base 2.

[0076] The part of the connecting rod 1 provided with the connecting hole 101 is arranged on the first side of the base 2, the part of the connecting rod 1 provided with the annular groove 102 is arranged on the second side of the base 2, and the clamping piece 3 is connected to the second side of the base 2.

[0077] In the embodiment, the part of the connecting rod 1 provided with the annular groove 102 is arranged on the second side of the base 2, so as to facilitate the connection of the clamping piece 3 to the second side of the base 2, thereby making full use of the space on the second side of the base 2, avoiding the occupation of the space on the first side of the base 2 by the clamping piece 3, and facilitating the arrangement of the counterweight block on the first side of the base 2.

[0078] Optionally, the counterweight is provided with a through hole for the connecting rod 1 to pass through.

[0079] In some embodiments provided by the present application, the surface of the second side of the base 2 is provided with a first recessed groove 202, and the mounting hole 201 penetrates the groove bottom of the first recessed groove 202, that is, the mounting hole 201 is in communication with the first recessed groove 202, and one end of the connecting rod 1 provided with the annular groove 102 passes through the mounting hole 201 and extends into the first recessed groove 202.

[0080] The clamping piece 3 is arranged in the first recessed groove 202 and connected with the first recessed groove 202. For example, the clamping piece 3 is connected to the groove bottom of the first recessed groove 202 through the threaded fastener 4. The height of the connecting rod 1 protruding from the groove bottom of the first recessed groove 202 is less than or equal to the depth of the first recessed groove 202, that is, one end of the connecting rod 1 provided with the first recessed groove 202 does not protrude from the first recessed groove 202.

[0081] In the embodiment, by arranging the first recessed groove 202 on the surface of the second side of the base 2, one end of the connecting rod 1 provided with the first recessed groove 202 does not protrude from the first recessed groove 202, and the clamping piece 3 is arranged in the first recessed groove 202, so that the connecting rod 1 and the clamping piece 3 do not protrude from the surface of the second side of the base 2, thereby avoiding that the base 2 can contact with the supporting surface such as the ground through the surface of the second side, increasing the contact area between the base 2 and the supporting surface, and making the base 2 more stable.

[0082] Further, the first recessed groove 202 is used for the lifting driving device to extend into. In this way, on the one hand, during the driving of the base 2 by the lifting driving device, the lifting driving device extends into the first recessed groove 202, and the first recessed groove 202 limits the lifting driving device, preventing the base 2 from sliding and shifting relative to the lifting driving device, and on the other hand, when the base 2 is lowered to the position by the lifting driving device, the base 2 always has a unique and accurate placement position.

[0083] In some embodiments provided by the present application, the number of the connecting rods 1 is two, and the base 2 is provided with the mounting holes 201 corresponding to the connecting rods 1 one by one, and each connecting rod 1 is provided with the annular groove 102, and the annular groove 102 is used for the corresponding clamping piece 3 to be arranged in.

[0084] In the embodiment, the connecting rods 1 can be connected with the corresponding counterweight mounting racks 6 respectively, so as to fix the base 2 through the two connecting rods 1, thereby reducing the risk of shaking and tilting of the base 2. In addition, the two connecting rods 1 can better disperse the load and reduce the stress of a single connecting rod 1, thereby improving the carrying capacity of the connecting rod 1.

[0085] In some embodiments provided by the present application, the surface of the first side of the base 2 is provided with an annular protrusion 203, which is used to be sleeved on the outer side of the connecting rod 1. Correspondingly, the bottom surface of the counterweight provided on the base 2 is provided with a positioning groove, and when the counterweight is arranged on the base 2, the positioning groove of the counterweight is in positioning cooperation with the annular protrusion, so as to prevent the counterweight from being displaced on the base 2.

[0086] Optionally, the outer wall of the annular protrusion 203 is provided as a tapered surface, and the diameter of the tapered surface gradually increases in the direction from the first side to the second side of the base 2. By providing the outer wall of the annular protrusion 203 as a tapered surface, a guiding effect can be achieved, which facilitates the insertion of the annular protrusion 203 into the positioning groove of the counterweight.

[0087] In the embodiments of the present application, a working machine is also provided. For example, the working machine includes but is not limited to a crane.

[0088] Specifically, the working machine includes the counterweight mounting frame 6, the first positioning member 7, and the counterweight assembly as described above.

[0089] The counterweight mounting frame 6 is provided with a positioning hole 601, and the first positioning member 7 is arranged through the positioning hole 601 and the connecting hole 101 to connect the positioning hole 601 and the connecting hole 101. Specifically, the first positioning member 7 is arranged through the positioning hole 601 and the connecting hole 101 in a detachable manner, so as to facilitate the disassembly of the counterweight assembly. Optionally, the first positioning member 7 is provided as a pin shaft.

[0090] In the embodiments of the present application, the working machine includes the counterweight assembly, and thus includes all the advantages of the counterweight assembly, which will not be described herein.

[0091] In some embodiments provided by the present application, the working machine further includes a vehicle frame and a slewing platform 15.

[0092] The slewing platform 15 is arranged on the vehicle frame in a rotatable manner, for example, the slewing axis of the slewing platform 15 extends in a vertical direction. The counterweight mounting frame 6 is arranged on the slewing platform 15 in a rotatable manner, and the rotation axis of the counterweight mounting frame 6 is parallel to the slewing axis of the slewing platform 15.

[0093] In the embodiments of the present application, by arranging the counterweight mounting frame 6 on the slewing platform 15, the counterweight assembly can rotate with the slewing platform 15 during the rotation of the slewing platform 15, so that the slewing platform 15 can always maintain balance.

[0094] By connecting the counterweight mounting frame 6 and the slewing platform 15 in a rotatable manner, the counterweight mounting frame 6 can have at least two stop positions, including a first stop position and a second stop position.

[0095] For example, in the first stop position, the counterweight mounting frame 6 faces the front of the working machine, and in the second stop position, the counterweight mounting frame 6 faces the rear of the working machine, so that the counterweight assembly can be adjusted to be at different distances from the rotation center of the rotating platform 15, thereby ensuring that the optimal center of gravity distribution can be maintained in different working states of the working machine.

[0096] In some embodiments provided by the present application, the working machine further comprises a support seat 8, a position detection device 10 and a control system.

[0097] The support seat 8 is connected to the counterweight mounting frame 6, and the support seat 8 is in sliding connection with the first positioning member 7 and is used to support the first positioning member 7.

[0098] The position detection device 10 is arranged on the support seat 8 or the counterweight mounting frame 6 and is used to detect position information of the first positioning member 7.

[0099] The control system is electrically connected to the position detection device 10. Based on the position information, the control system determines whether the first positioning member 7 is not inserted or not pulled out to the position, and sends an alarm information. For example, the insertion to the position includes that the first positioning member 7 passes through the connecting hole 101 and the positioning hole 601 to connect the connecting hole 101 and the positioning hole 601. The pulling out to the position includes that the first positioning member 7 is pulled out from the connecting hole 101 and the positioning hole 601, so that the connecting rod 1 and the counterweight mounting frame 6 can move relatively.

[0100] In this embodiment, by arranging the support seat 8 in sliding connection with the first positioning member 7 on the counterweight mounting frame 6, the first positioning member 7 can be supported, so that after the first positioning member 7 is pulled out from the connecting hole 101 and the positioning hole 601, the first positioning member 7 can be placed on the support seat 8, thereby avoiding the problem of loss caused by the disordered placement of the first positioning member 7.

[0101] By the position information transmitted by the position detection device 10, the control system can determine whether the first positioning member 7 is inserted or pulled out to the position, and when it is determined that the first positioning member 7 is not inserted or pulled out to the position, an alarm information is sent. For example, the alarm information can be sent to the operator to remind the operator, or the alarm information can also be sent to the corresponding execution component to control the execution component to perform corresponding operation.

[0102] In this way, the problem that it is dangerous to perform operation on the counterweight assembly when the first positioning member 7 is not inserted or pulled out to the position can be avoided.

[0103] Optionally, the control system can be a whole machine control system of the working machine, or can be a sub-control system independent of the whole machine control system.

[0104] Optionally, the position detecting device 10 is a proximity switch or a travel switch, the number of the position detecting device 10 is at least two, and the position detecting device 10 includes the first position detecting device 10 and the second position detecting device 10. The first position detecting device 10 and the second position detecting device 10 are electrically connected to the control system.

[0105] The work machine further includes a trigger 14 connected to the first positioning member 7, and the trigger 14 protrudes from the side wall of the first positioning member 7. The first position detecting device 10 and the second position detecting device 10 are distributed along the moving path of the trigger 14, and the first position detecting device 10 corresponds to the position where the first positioning member 7 is inserted into place, and the second position detecting device 10 corresponds to the position where the first positioning member 7 is pulled out of place.

[0106] In the embodiment, when the trigger 14 moves to the position of the first position detecting device 10, the first position detecting device 10 transmits position information to the control system. When the trigger 14 moves to the position of the second position detecting device 10, the second position detecting device 10 transmits position information to the control system.

[0107] The control system can determine whether the first positioning member 7 is inserted into place or pulled out of place based on the signals transmitted by the first position detecting device 10 and the second position detecting device 10.

[0108] Of course, the position detecting device 10 is not limited to the above-mentioned form, for example, in other embodiments provided by the present application, the position detecting device 10 can also be set as a displacement sensor, including but not limited to a magnetostrictive displacement sensor and a laser displacement sensor.

[0109] In the embodiment, the control system can calculate the position of the first positioning member 7 based on the position information transmitted by the position sensor, and then determine whether the first positioning member 7 is inserted into place or pulled out of place.

[0110] In some embodiments provided by the present application, the work machine further includes a lifting driving device. Optionally, the lifting driving device can be set as a hydraulic cylinder, for example, the hydraulic cylinder can be arranged on the frame.

[0111] The lifting driving device is used to lift the weight assembly, and the lifting driving device is electrically connected to the control system. When the control system determines that the first positioning member 7 is not inserted into place or pulled out of place based on the position information, the control system sends an alarm information to the lifting driving device to control the lifting driving device to remain in a stationary state.

[0112] In the embodiment, during the installation of the counterweight assembly, the lifting driving device is controlled to drive the counterweight assembly to ascend until the connecting hole 101 on the counterweight assembly is opposite to the positioning hole 601 on the counterweight mounting frame 6, the lifting driving device is controlled to stop, and then the first positioning member 7 is inserted into the connecting hole 101 and the positioning hole 601.

[0113] When the control system determines that the first positioning member 7 is not inserted in place, the lifting driving device is controlled to remain stationary to avoid the problem that the operator misoperates and controls the lifting driving device to descend.

[0114] Similarly, when the control system determines that the first positioning member 7 is not pulled out in place, the lifting driving device is controlled to remain stationary to avoid the problem that the operator misoperates and controls the lifting driving device to descend.

[0115] Optionally, the control system is electrically connected with the driving assembly of the rotary platform 15, and when the control system determines that the first positioning member 7 is not inserted in place or pulled out in place based on the position information, the control system sends alarm information to the driving assembly of the rotary platform 15 to control the driving assembly of the rotary platform 15 to remain in a stationary state.

[0116] In the embodiment, when the control system determines that the first positioning member 7 is not inserted in place, the driving assembly of the rotary platform 15 is controlled to remain stationary to avoid the problem that the operator misoperates and controls the rotary platform 15 to rotate.

[0117] Similarly, when the control system determines that the first positioning member 7 is not pulled out in place, the rotary platform 15 is controlled to remain stationary to avoid the problem that the operator misoperates and controls the rotary platform 15 to rotate.

[0118] In some embodiments provided by the application, the first positioning member 7 can be driven by a reciprocating driving device. In this way, the first positioning member 7 can be inserted into the connecting hole 101 and the positioning hole 601 or pulled out of the connecting hole 101 and the positioning hole 601 by the reciprocating driving device, thereby improving the automation degree of the working machine.

[0119] Optionally, the reciprocating driving device can be a pneumatic cylinder, an oil cylinder or an electric cylinder.

[0120] Of course, the working machine can also include a position detection assembly. The position detection assembly is used to detect the position signal of the lifting driving device.

[0121] The position detection assembly, the lifting driving device and the reciprocating driving device are electrically connected with the control system. Based on the position signal transmitted by the position detection assembly, when the control system determines that the lifting driving device drives the counterweight assembly to be in place, the control system controls the reciprocating driving device to drive the first positioning member 7 to be inserted into the positioning hole 601 and the connecting hole 101.

[0122] Optionally, when the control system receives the pin pulling instruction, the control system controls the reciprocating driving device to drive the first positioning member 7 to pull out from the positioning hole 601 and the connecting hole 101. Based on the position information transmitted by the position detection device 10, when the control system determines that the first positioning member 7 is pulled out to the position, the control system controls the lifting driving device to drive the counterweight assembly to descend.

[0123] In this way, the work machine can complete the automatic pin insertion and pin pulling operation, and the automation level of the work machine is improved.

[0124] Optionally, the principle of the position detection assembly can refer to the position detection device 10 described above, and thus will not be described here.

[0125] In some embodiments provided by the present application, the work machine further comprises an alarm assembly. The alarm assembly can be an alarm, for example, but not limited to, an audible and visual alarm.

[0126] The alarm assembly is electrically connected with the control system. Based on the position information, when the control system determines that the first positioning member 7 is not inserted to the position or pulled out to the position, the control system sends alarm information to the alarm assembly to control the alarm assembly to alarm.

[0127] In this embodiment, when the control system determines that the first positioning member 7 is not inserted to the position or pulled out to the position, the control system sends alarm information to the operator through the alarm assembly to remind the operator to pay attention, thereby reducing the possibility of the operator making a mistake.

[0128] In some embodiments provided by the present application, the support seat 8 is provided with a guide groove 801 extending along the axial direction of the positioning hole 601, and the two ends of the guide groove 801 are closed along the axial direction of the positioning hole 601. The guide groove 801 penetrates the support seat 8 in a direction perpendicular to the axial direction of the positioning hole 601.

[0129] The work machine further comprises a limiting member 9 connected with the first positioning member 7. The limiting member 9 is slidably arranged in the guide groove 801 along the axial direction of the positioning hole 601. The portion of the limiting member 9 opposite to the side wall of the guide groove 801 is provided with a clamping groove 901, and the side wall of the guide groove 801 is arranged in the clamping groove 901 to limit the limiting member 9 in the penetrating direction of the guide groove 801. It can be understood that the penetrating direction of the guide groove 801 is the direction in which the slot of the guide groove 801 faces.

[0130] In this embodiment, the limiting member 9 is connected with the first positioning member 7, and when the first positioning member 7 is inserted into or pulled out from the positioning hole 601 and the connecting hole 101, the first positioning member 7 drives the limiting member 9 to slide along the guide groove 801 on the support seat 8.

[0131] By closing both ends of the guide groove 801, the two ends of the guide groove 801 can limit the limiting piece 9, preventing the limiting piece 9 from being pulled out along the extension direction of the guide groove 801. At the same time, the clamping groove 901 of the limiting piece 9 is limited and matched with the side wall of the guide groove 801, so that the guide groove 801 can form a limit in the penetration direction of the guide groove 801, thereby avoiding the disengagement of the limiting piece 9 and the guide groove 801, so that the first positioning piece 7 can always be kept on the support seat 8, avoiding the loss of the first positioning piece 7.

[0132] Optionally, the limiting piece 9 is provided as a limiting plate. Optionally, the limiting piece 9 is connected to the end face of the first positioning piece 7, for example, the limiting piece 9 is connected to the end face of the first positioning piece 7 through a threaded connecting piece.

[0133] In some embodiments provided by the application, the working machine further comprises a second positioning piece 11. The second positioning piece 11 can be provided as a pin shaft, for example, it can be a pin spring.

[0134] The support seat 8 is provided with a first limiting hole 802 and a second limiting hole 803. The axes of both the first limiting hole 802 and the second limiting hole 803 intersect with the sliding path of the limiting piece 9, and the first limiting hole 802 and the second limiting hole 803 are arranged along the sliding path of the limiting piece 9. The second positioning piece 11 can be selectively placed in the first limiting hole 802 and the second limiting hole 803.

[0135] Under the condition that the first positioning piece 7 is inserted in place, the second positioning piece 11 is arranged in the first limiting hole 802 and located on the side of the limiting piece 9 close to the second limiting hole 803. Under the condition that the first positioning piece 7 is pulled out in place, the second positioning piece 11 is arranged in the second limiting hole 803 and located on the side of the limiting piece 9 close to the first limiting hole 802.

[0136] In this embodiment, after the first positioning piece 7 is inserted in place, the second positioning piece 11 is inserted into the first limiting hole 802, and the second positioning piece 11 is located on the side of the limiting piece 9 close to the second limiting hole 803 to limit the limiting piece 9 from being pulled out of the positioning hole 601 and the connecting hole 101.

[0137] After the first positioning piece 7 is pulled out in place, the second positioning piece 11 is inserted into the second limiting hole 803, and the second positioning piece 11 is located on the side of the limiting piece 9 close to the first limiting hole 802 to limit the limiting hole from entering the positioning hole 601.

[0138] In this way, by limiting and fixing the limiting piece 9 through the second positioning piece 11, the first positioning hole 601 can be prevented from moving freely, thereby improving the stability of the first positioning piece 7.

[0139] In some embodiments provided by the application, the support seat 8 comprises a bent plate 804.

[0140] The bending plate 804 comprises a main plate and a bending plate connected to the side edge of the main plate. The guide slot 801 is arranged on the main plate, and the bending plate 804 is used to be connected with the counterweight mounting frame 6, for example, the bending plate 804 can be welded with the counterweight mounting frame 6 or connected through a threaded connecting piece. The through hole is arranged at the position opposite to the positioning hole 601 of the bending plate 804, and the through hole is used for the first positioning piece 7 to pass through.

[0141] Further, the support seat 8 further comprises two side plates 805 connected to the two sides of the main plate respectively. The first limiting hole 802 and the second limiting hole 803 both penetrate the two side plates 805.

[0142] In some embodiments provided by the present application, the connecting rod 1 is provided with an open slot 103 at the end away from the annular slot 102. The slot opening of the open slot 103 faces away from the annular slot 102, and the open slot 103 penetrates the connecting rod 1 along the axial direction of the connecting hole 101.

[0143] The counterweight mounting frame 6 is provided with a clamping hole 602 parallel to the positioning hole 601. When the connecting hole 101 of the connecting rod 1 is opposite to the positioning hole 601 of the counterweight mounting frame 6, the open slot 103 is opposite to the clamping hole 602. The working machine further comprises a clamping shaft 12 arranged in the clamping hole 602.

[0144] In this embodiment, during the lifting of the counterweight assembly, as the counterweight assembly is lifted, the clamping shaft 12 gradually enters the open slot 103, thereby limiting the counterweight assembly and preventing the height of the counterweight assembly from being too high.

[0145] In addition, when the first positioning piece 7 penetrates the positioning hole 601 and the connecting hole 101, the clamping shaft 12 penetrates the clamping hole 602 and the open slot 103, thereby avoiding the rotation of the counterweight assembly around the first positioning piece 7, so as to improve the stability of the counterweight assembly.

[0146] Optionally, the cross section of the open slot 103 perpendicular to the axial direction of the connecting hole 101 is a half waist-shaped slot, and correspondingly, the cross section of the clamping shaft 12 is a waist-shaped structure.

[0147] Optionally, the end surface of the clamping shaft 12 is provided with a connecting plate 13, and the connecting plate 13 is welded with the clamping shaft 12 or connected through a threaded connecting piece. The connecting plate 13 is welded with the counterweight mounting frame or connected through a threaded connecting piece. The clamping shaft 12 is connected to the counterweight mounting frame through the connecting plate 13, so as to avoid the clamping shaft 12 from being pulled out of the clamping hole 602.

[0148] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A counterweight assembly, characterized by, The connecting rod (1) extends along a first direction, and a connecting hole (101) is arranged on the connecting rod (1), the connecting hole (101) is connected with a positioning hole (601) of a counterweight mounting frame (6), an axis of the connecting hole (101) intersects the first direction, and an outer side wall of the connecting rod (1) is provided with an annular groove (102); a base (2) and a clamping piece (3), the base (2) is provided with a mounting hole (201) for the connecting rod (1) to pass through, the mounting hole (201) extends along the first direction, the clamping piece (3) is connected with the base (2), the clamping piece (3) is arranged in the annular groove (102) and is in sliding fit with the annular groove (102), and the clamping piece (3) is used for limiting the annular groove (102) in the first direction. The mounting hole (201) penetrates the base (2) along the first direction, the base (2) has a first side and a second side in the first direction, the part of the connecting rod (1) provided with the connecting hole (101) is arranged on the first side of the base (2), the part of the connecting rod (1) provided with the annular groove (102) is arranged on the second side of the base (2), and the clamping piece (3) is connected to the second side of the base (2). The number of the clamping pieces (3) is at least two, and the at least two clamping pieces (3) are distributed along the circumference of the connecting rod (1).

2. The counterweight assembly of claim 1, wherein, The counterweight assembly further comprises at least two threaded fasteners (4), the threaded fasteners (4) pass through the corresponding clamping pieces (3) and are threadedly connected with the base (2), and each clamping piece (3) has a corresponding threaded fastener (4).

3. The counterweight assembly of claim 2, wherein, The counterweight assembly further comprises a pressing piece (5), in the first direction, the at least two clamping pieces (3) are arranged between the pressing piece (5) and the base (2), the threaded fastener (4) passes through the pressing piece (5) and the corresponding clamping piece (3) and is threadedly connected with the base (2).

4. The counterweight assembly of claim 3, wherein, A surface of the second side of the base (2) is provided with a first recess (202), the mounting hole (201) penetrates a groove bottom of the first recess (202), the clamping piece (3) is arranged in the first recess (202) and is connected with the first recess (202), and a height of the connecting rod (1) protruding from the groove bottom of the first recess (202) is less than or equal to a depth of the first recess (202).

5. The counterweight assembly of claim 1, wherein, The counterweight assembly comprises a counterweight mounting frame (6), a first positioning piece (7) and the counterweight assembly according to any one of claims 1-5; 6. A work machine characterized by, The counterweight mounting frame (6) is provided with a positioning hole (601), and the first positioning piece (7) is arranged in the positioning hole (601) and the connecting hole (101). The working machine further comprises:

7. A work machine according to claim 6, characterised in that a support seat (8) connected with the counterweight mounting frame (6), the support seat (8) is in sliding connection with the first positioning piece (7) and is used for supporting the first positioning piece (7). ​ A position detection device (10) is arranged on the support seat (8) or the counterweight mounting frame (6) and used for detecting position information of the first positioning member (7); A control system is electrically connected with the position detection device (10), and sends an alarm information when it is determined that the first positioning member (7) is not inserted or pulled out to the position based on the position information.

8. A work machine according to claim 7, characterised in that The work machine further comprises a lifting driving device used for lifting the counterweight assembly, the lifting driving device is electrically connected with the control system, and the control system sends the alarm information to the lifting driving device to control the lifting driving device to keep in a static state when it is determined that the first positioning member (7) is not inserted or pulled out to the position based on the position information. And / or, the work machine further comprises an alarm assembly electrically connected with the control system, and the control system sends the alarm information to the alarm assembly to control the alarm assembly to alarm when it is determined that the first positioning member (7) is not inserted or pulled out to the position based on the position information.

9. A work machine according to claim 7 or 8, characterised in that The work machine further comprises a limiting member (9) connected with the first positioning member (7); The support seat (8) is provided with a guide groove (801) extending along the axial direction of the positioning hole (601), both ends of the guide groove (801) are closed along the axial direction of the positioning hole (601), and the guide groove (801) penetrates through the support seat (8) in a direction perpendicular to the axial direction of the positioning hole (601); The limiting member (9) is slidably arranged in the guide groove (801) along the axial direction of the positioning hole (601), the part of the limiting member (9) opposite to the side wall of the guide groove (801) is provided with a clamping groove (901), and the side wall of the guide groove (801) is arranged in the clamping groove (901) to limit the limiting member (9) in the penetrating direction of the guide groove (801).

10. A work machine according to claim 9, characterised in that The work machine further comprises a second positioning member (11), the support seat (8) is provided with a first limiting hole (802) and a second limiting hole (803), the axial lines of the first limiting hole (802) and the second limiting hole (803) both intersect with the sliding path of the limiting member (9), and the second positioning member (11) is selectively arranged in the first limiting hole (802) and the second limiting hole (803); Under the condition that the first positioning member (7) is inserted to the position, the second positioning member (11) is arranged in the first limiting hole (802) and located on the side of the limiting member (9) close to the second limiting hole (803), and under the condition that the first positioning member (7) is pulled out to the position, the second positioning member (11) is arranged in the second limiting hole (803) and located on the side of the limiting member (9) close to the first limiting hole (802).

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