Swing platform and working machine

Abstract

The present application relates to the technical field of engineering machinery, and provides a slewing platform and a working machine, wherein the slewing platform comprises a slewing platform body, an extension platform and a locking mechanism, the extension platform is arranged at a first end of the slewing platform body, and the extension platform is in sliding connection with the slewing platform body, the sliding direction is arranged along a first direction, and a counterweight mounting position is arranged on the extension platform; the locking mechanism can be switched between a locking state and an unlocking state, in the locking state, the extension platform can be limited to slide relative to the slewing platform body, and in the unlocking state, the extension platform can slide relative to the slewing platform body. In this way, the counterweight is arranged on the extension platform, the position of the counterweight can be adjusted by making the extension platform slide relative to the slewing platform body, and the problem that the position of the counterweight cannot be adjusted in the prior art slewing platform is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, and in particular to a slewing platform and a working machine. BACKGROUND

[0002] With the diversified application development of working machines, the structure of working machines tends to be universalized and refined. Taking excavators as an example, at present, excavators generally need to install counterweights on the slewing platform to balance the moment generated by the working device of the excavator, thereby increasing the overall stability of the excavator. However, due to the change of the working conditions of the excavator, the maximum moment generated by the working device of the excavator will change, and accordingly, the requirement for the moment generated by the counterweight will also change.

[0003] The traditional excavator sets a support seat at the tail of the slewing platform to support the counterweight. However, since the relative position of the counterweight and the slewing platform is fixed, when it is necessary to change the moment generated by the counterweight, only the weight of the counterweight can be adjusted. In some cases, in order to adapt to the installation of counterweights of different weights, even different support seats need to be replaced, and the adjustment process is complex.

[0004] Therefore, how to solve the problem that the existing slewing platform cannot adjust the position of the counterweight has become an important technical problem to be solved by the technical personnel in the field. SUMMARY

[0005] The present application provides a slewing platform and a working machine to solve the defect that the existing slewing platform cannot adjust the position of the counterweight.

[0006] The present application provides a slewing platform, comprising:

[0007] a slewing platform body;

[0008] an extension platform arranged at a first end of the slewing platform body, and the extension platform is in sliding connection with the slewing platform body, the sliding direction is arranged along a first direction, and the extension platform is provided with a counterweight mounting position;

[0009] a locking mechanism capable of switching between a locked state and an unlocked state, in the locked state, the extension platform can be limited to slide relative to the slewing platform body, and in the unlocked state, the extension platform can slide relative to the slewing platform body.

[0010] When the moment generated by the counterweight needs to be adjusted, the locking mechanism is switched to the unlocked state, the extension platform is forced to slide with the counterweight relative to the slewing platform body, so that the position of the counterweight can be adjusted. After the position of the counterweight is adjusted, the locking mechanism is switched to the locked state, the extension platform is limited to slide relative to the slewing platform body by the locking mechanism, and the stability of the position of the counterweight is ensured. In this way, when the moment generated by the counterweight needs to be adjusted, only the extension platform needs to slide relative to the slewing platform body, avoiding the adjustment of the weight of the counterweight, and more avoiding the replacement of the support seat, solving the problem that the position of the counterweight cannot be adjusted in the prior art.

[0011] According to the slewing platform provided by the application, the slewing platform body comprises a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are arranged side by side and are spaced apart along a second direction, and the second direction is perpendicular to the first direction.

[0012] The extension platform is located between the first longitudinal beam and the second longitudinal beam, and the extension platform is slidably connected with the first longitudinal beam and the second longitudinal beam on both sides along the second direction.

[0013] The extension platform is arranged in a structure capable of sliding relative to the slewing platform body, and the extension platform extends into the interior of the slewing platform body. Not only can the position of the counterweight mounting position be adjusted according to the width dimension of the counterweight, but also part of the extension platform can be hidden in the interior of the slewing platform body when a counterweight with a smaller width dimension is installed, so as to reduce the size of the slewing platform along the first direction.

[0014] According to the slewing platform provided by the application, the first longitudinal beam and the second longitudinal beam are provided with support members, the extension platform is provided with overlapping members on both sides along the second direction, the overlapping members can overlap with the support members, and the support members and / or the overlapping members are arranged in a strip-shaped structure extending along the first direction.

[0015] Through the cooperation of the support members and the overlapping members, the sliding connection between the extension platform and the slewing platform body can be realized, and the carrying capacity can be improved.

[0016] According to the slewing platform provided by the application, the support members comprise first support portions and second support portions, and the overlapping members comprise first overlapping portions and second overlapping portions.

[0017] The first support part is in the shape of a cylinder, the first end of the first longitudinal beam and the first end of the second longitudinal beam are respectively provided with the first support part, the first support part can rotate around its own axis, the first support part is arranged along the second direction relative to the rotation axis of the slewing platform body, the first overlap part is arranged on both sides of the extension platform along the second direction, the first overlap part extends along the first direction, and the first overlap part overlaps with the first support part;

[0018] The side of the first longitudinal beam facing the extension platform and the side of the second longitudinal beam facing the extension platform body are respectively provided with the second support part, the second support part extends along the first direction, the second overlap part is in the shape of a cylinder, the side of the extension platform facing the first longitudinal beam and the side of the extension platform facing the second longitudinal beam are respectively provided with the second overlap part, the second overlap part can rotate around its own axis, the second overlap part is arranged along the second direction relative to the rotation axis of the extension platform, and the second overlap part overlaps with the second support part.

[0019] The cooperation of the first support part and the first overlap part and the cooperation of the second support part and the second overlap part can ensure the stability of the extension platform relative to the slewing platform body when the extension platform slides relative to the slewing platform body. The rotation of the first support part relative to the slewing platform body and the rotation of the second overlap part relative to the extension platform can reduce the friction between the extension platform and the slewing platform body and reduce the resistance when the extension platform slides relative to the slewing platform body, and the position of the extension platform can be adjusted more conveniently.

[0020] According to the slewing platform provided by the application, the side of the first longitudinal beam facing the extension platform and the side of the second longitudinal beam facing the extension platform are provided with a sliding groove, the sliding groove penetrates the end face of the first end of the first longitudinal beam and the end face of the first end of the second longitudinal beam along the first direction, the second support part is arranged in the sliding groove, the second support part divides the sliding groove into a first sliding channel and a second sliding channel distributed along a third direction, the third direction is perpendicular to the first direction and the second direction, and the first support part is arranged in the first sliding channel.

[0021] A transition channel is arranged between the first sliding channel and the second sliding channel, the transition channel is arranged to enable the extension platform to switch from one of the first sliding channel and the second sliding channel to the other.

[0022] When the extension platform is disassembled, the first support part does not need to be disassembled, the switching of the sliding channel of the extension platform can be completed, and the operation is convenient.

[0023] According to the slewing platform provided by the application, the extension platform comprises:

[0024] Two longitudinal supports are arranged at intervals along the second direction, and the two longitudinal supports are respectively connected to the first longitudinal beam and the second longitudinal beam in a sliding manner;

[0025] Two transverse supports are arranged at intervals along the first direction, and the transverse supports are arranged between the two longitudinal supports, and the ends of the transverse supports are connected to the longitudinal supports, one of the second ends of the two transverse supports away from the rotary platform body is a first transverse support, and the other is a second transverse support;

[0026] A counterweight mounting plate is connected to the longitudinal support, and the counterweight mounting plate is provided with a mounting hole for connecting to the counterweight.

[0027] The extension platform is arranged in a frame structure, so that the structure of the extension platform is simplified, the material used in the processing of the extension platform is less, and the processing cost of the extension platform is reduced.

[0028] According to the rotary platform provided by the application, the first limiting piece is arranged between the first transverse support and the second transverse support, and the first limiting piece is arranged to be capable of abutting against the second transverse support.

[0029] The longitudinal support is provided with a second limiting piece, and the second limiting piece is arranged at one end of the longitudinal support away from the second end of the rotary platform body, and the second limiting piece is arranged to be capable of abutting against the first end of the first longitudinal beam and / or the first end of the second longitudinal beam.

[0030] Through the interaction of the second limiting piece and the first end of the first longitudinal beam and / or the interaction of the second limiting piece and the first end of the second longitudinal beam, the sliding position of the extension platform can be limited to prevent the extension platform from being too close to the transition channel and to prevent the extension platform from accidentally entering the second sliding channel.

[0031] According to the rotary platform provided by the application, the locking mechanism comprises a first locking hole, a second locking hole and a locking pin, the first locking hole is arranged on the rotary platform body, the second locking hole is arranged on the extension platform, the first locking hole and / or the second locking hole are provided with at least two along the first direction, and the locking pin can simultaneously penetrate the first locking hole and the second locking hole.

[0032] Through the interaction of the locking pin and the hole wall of the first locking hole and the interaction of the locking pin and the hole wall of the second locking hole, the sliding of the extension platform relative to the rotary platform body can be limited, and the locking of the extension platform can be realized.

[0033] According to the rotary platform provided by the application, the locking mechanism comprises a first locking hole, a second locking hole and a locking pin, the first locking hole is arranged on the rotary platform body, the second locking hole is arranged on the extension platform, the first locking hole and / or the second locking hole are provided with at least two along the first direction, and the locking pin can simultaneously penetrate the first locking hole and the second locking hole.

[0034] The drive mechanism is configured to drive the extended platform to slide relative to the rotary platform body.

[0035] The drive mechanism includes an electric drive assembly, and the rotary platform further includes:

[0036] A touch switch is disposed at the first end of the rotary platform body. The extended platform can contact the touch switch. The touch switch is electrically connected to the electric drive assembly. The touch switch is configured to de-energize the electric drive assembly when in contact with the extended platform.

[0037] By driving the extended platform to slide relative to the rotary platform body using an electric drive component and detecting the sliding position of the extended platform using a touch switch, it is possible to further prevent the extended platform from slipping off the rotary platform body.

[0038] The present invention also provides a working machine, including the above-mentioned rotary platform.

[0039] The rotary platform provided by this invention includes a rotary platform body, an extension platform, and a locking mechanism. A counterweight mounting position is provided on the extension platform for mounting a counterweight. The extension platform is located at the first end of the rotary platform body and is slidably connected to the rotary platform body, with the sliding direction set along a first direction. By sliding the extension platform relative to the rotary platform body, the position of the counterweight can be adjusted along the first direction, thereby adjusting the torque generated by the counterweight. The locking mechanism can switch between a locked state and an unlocked state. When the locking mechanism is switched to the locked state, it restricts the sliding of the extension platform relative to the rotary platform body, maintaining the stability of the relative position of the extension platform and the rotary platform body. When the locking mechanism is switched to the unlocked state, the extension platform can slide relative to the rotary platform body. When it is necessary to adjust the torque generated by the counterweight, the locking mechanism is switched to the unlocked state. Force is applied to the extension platform, causing it to slide relative to the rotary platform body. This allows for adjustment of the counterweight's position. After the counterweight is positioned correctly, the locking mechanism is switched to the locked state. The locking mechanism restricts the sliding of the extension platform relative to the rotary platform body, ensuring the stability of the counterweight's position. This design means that when adjusting the torque generated by the counterweight, only the extension platform needs to slide relative to the rotary platform body, avoiding adjustments to the counterweight's weight and replacement of the support base. This solves the problem in existing technologies where the rotary platform cannot adjust the counterweight's position.

[0040] Furthermore, the working machinery provided by the present invention also possesses the various advantages described above due to the rotary platform described above. Attached Figure Description

[0041] In order to make the technical solutions in the present application or prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0042] Figure 1 is a structural schematic view of a rotary platform provided by the present application;

[0043] Figure 2 is Figure 1 is an enlarged view of I in FIG. 1;

[0044] Figure 3 is a partial structural schematic view of a rotary platform body provided by the present application;

[0045] Figure 4 is a sectional structural schematic view of a first longitudinal beam and a second longitudinal beam of a rotary platform body provided by the present application;

[0046] Figure 5 is a structural schematic view of an extension platform provided by the present application;

[0047] Figure 6 is a structural schematic view of another extension platform provided by the present application;

[0048] Figure 7 is a sectional view of a matching structure of an extension platform and a rotary platform body provided by the present application;

[0049] Figure 8 is a top view of a matching structure of an extension platform and a rotary platform body provided by the present application;

[0050] Figure 9 is a structural schematic view of a longitudinal support provided by the present application.

[0051] Reference signs:

[0052] 1, rotary platform body; 2, extension platform; 3, first longitudinal beam; 4, second longitudinal beam; 5, first support part; 6, second support part; 7, first lap joint part; 8, second lap joint part; 9, first slide; 10, second slide; 11, transition passage; 12, longitudinal support; 13, first transverse support; 14, counterweight mounting plate; 15, mounting hole; 16, first limiting part; 17, second limiting part; 18, first locking hole; 19, second locking hole; 20, avoiding space; 21, cross beam; 22, support plate; 23, second transverse support. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0054] The following is combined with Figures 1 to 9 The rotary platform of the present invention is described.

[0055] like Figures 1 to 9 As shown, the slewing platform provided in this embodiment of the invention includes a slewing platform body 1, an extension platform 2, and a locking mechanism. A counterweight mounting position is provided on the extension platform 2 for mounting a counterweight.

[0056] Specifically, the extended platform 2 is located at the first end of the rotary platform body 1, and the extended platform 2 is slidably connected to the rotary platform body 1, with the sliding direction set along a first direction. The first direction is... Figure 1 As shown in the direction m, the two ends of the slewing platform body 1 along the first direction are the first end and the second end of the slewing platform body 1, respectively. Specifically, the slewing platform body 1 is provided with a slewing bearing mounting position for connecting to the track device via the slewing bearing. The first end of the slewing platform body 1 is the end farther from the slewing bearing mounting position, and the second end of the slewing platform body 1 is the end closer to the slewing bearing mounting position.

[0057] By sliding the extended platform 2 relative to the rotary platform body 1, the position of the counterweight can be adjusted along the first direction, thereby adjusting the torque generated by the counterweight.

[0058] The locking mechanism can switch between a locked state and an unlocked state. When the locking mechanism is switched to the locked state, it restricts the sliding of the extended platform 2 relative to the rotary platform body 1, maintaining the stability of the relative position of the extended platform 2 and the rotary platform body 1. When the locking mechanism is switched to the unlocked state, the extended platform 2 can slide relative to the rotary platform body 1.

[0059] When it is necessary to adjust the torque generated by the counterweight, the locking mechanism is switched to the unlocked state, and force is applied to the extension platform 2 to cause the extension platform 2 to slide relative to the rotary platform body 1, thereby achieving the adjustment of the counterweight's position. After the counterweight's position is adjusted, the locking mechanism is switched to the locked state, which restricts the sliding of the extension platform 2 relative to the rotary platform body 1, ensuring the stability of the counterweight's position.

[0060] In this way, when the moment generated by the counterweight needs to be adjusted, only the extension platform 2 needs to be slid relative to the slewing platform body 1, thereby avoiding adjustment of the weight of the counterweight, and further avoiding replacement of the support seat, and solving the problem that the slewing platform in the prior art cannot adjust the position of the counterweight.

[0061] In addition, the extension platform 2 is arranged in a structure that can slide relative to the slewing platform body 1, and when the counterweight is installed, the extension platform 2 can be first slid to a position far away from the slewing platform body 1, and then the counterweight is fixedly installed at the counterweight installation position of the extension platform 2, and then the position of the extension platform 2 is adjusted, so that the distance between the counterweight and the slewing platform body 1 meets the requirements. When the counterweight is connected to the extension platform 2, there is a certain space between the counterweight installation position and the slewing platform body 1, which can provide a certain operation space for the installation operation of the counterweight, and the operation is convenient.

[0062] In addition, the extension platform 2 is arranged in a structure that can slide relative to the slewing platform body 1, and when the counterweight is installed, the extension platform 2 can be first slid to a position far away from the slewing platform body 1, and then the counterweight is fixedly installed at the counterweight installation position of the extension platform 2, and then the position of the extension platform 2 is adjusted, so that the distance between the counterweight and the slewing platform body 1 meets the requirements. When the counterweight is connected to the extension platform 2, there is a certain space between the counterweight installation position and the slewing platform body 1, which can provide a certain operation space for the installation operation of the counterweight, and the operation is convenient.

[0063] The width size is the size of the counterweight along the first direction.

[0064] In the embodiment of the application, the extension platform 2 extends into the inside of the slewing platform body 1. Specifically, the slewing platform body 1 comprises a first longitudinal beam 3 and a second longitudinal beam 4, and the first longitudinal beam 3 and the second longitudinal beam 4 are arranged side by side and extend along the first direction. The first longitudinal beam 3 and the second longitudinal beam 4 are spaced apart along the second direction, and the second direction is perpendicular to the first direction and parallel to the support surface of the slewing platform body 1. Figure 1 The second direction is the direction shown by n in FIG. 1.

[0065] The first longitudinal beam 3 and the second longitudinal beam 4 have a spacing therebetween, and the extension platform 2 is located between the first longitudinal beam 3 and the second longitudinal beam 4, and the two sides of the extension platform 2 along the second direction are slidably connected with the first longitudinal beam 3 and the second longitudinal beam 4, respectively.

[0066] In some embodiments, a linear sliding bearing is arranged between the first longitudinal beam 3 and the extension platform 2, and a linear sliding bearing is arranged between the second longitudinal beam 4 and the extension platform 2, and the sliding connection between the extension platform 2 and the slewing platform body 1 is realized through the linear sliding bearings.

[0067] In some other embodiments, the first longitudinal beam 3 and the second longitudinal beam 4 are provided with support members, and the extension platform 2 is provided with clamping members on both sides thereof along the second direction, so that the clamping members clamp the support members. Specifically, the support members can be arranged on the side of the first longitudinal beam 3 facing the extension platform 2, and the clamping members can be arranged on the side of the extension platform 2 facing the first longitudinal beam 3. Correspondingly, the support members can be arranged on the side of the second longitudinal beam 4 facing the extension platform 2, and the clamping members can be arranged on the side of the extension platform 2 facing the second longitudinal beam 4. The clamping members on both sides of the extension platform 2 clamp the support members on the first longitudinal beam 3 and the support members on the second longitudinal beam 4, respectively, and the interaction between the support members and the clamping members can support the extension platform 2.

[0068] The support members and / or the clamping members are in the form of strip structures extending along the first direction. Specifically, only the support members can be in the form of strip structures extending along the first direction, or only the clamping members can be in the form of strip structures extending along the first direction, or both the support members and the clamping members can be in the form of strip structures extending along the first direction, as long as the sliding stroke of the extension platform 2 relative to the slewing platform body 1 along the first direction can be ensured.

[0069] In specific embodiments, the support members include first support portions 5 and second support portions 6, and the clamping members include first clamping portions 7 and second clamping portions 8.

[0070] The first longitudinal beam 3 has a first end corresponding to the first end of the slewing platform body 1, and the second longitudinal beam 4 has a first end corresponding to the first end of the slewing platform body 1. The extension platform 2 has a first end away from the second end of the slewing platform body 1, and a second end close to the second end of the slewing platform body 1.

[0071] The first support portions 5 are in the form of cylindrical bodies, and are arranged on the first ends of the first longitudinal beam 3 and the second longitudinal beam 4, respectively.

[0072] The first support portion 5 located at the first end of the first longitudinal beam 3 is rotationally connected to the first longitudinal beam 3, and the rotation axis of the first support portion 5 relative to the first longitudinal beam 3 coincides with the axis of the first support portion 5 itself and is arranged along the second direction.

[0073] The first support portion 5 located at the first end of the second longitudinal beam 4 is rotationally connected to the second longitudinal beam 4, and the rotation axis of the first support portion 5 relative to the second longitudinal beam 4 coincides with the axis of the first support portion 5 itself and is arranged along the second direction.

[0074] The first lap portion 7 is arranged in a strip shape and extends along the first direction. The first lap portion 7 is arranged above the first support portion 5 and can slide relative to the first support portion 5.

[0075] The second lap portion 8 is in a cylindrical shape. The second lap portion 8 is arranged on both sides of the extension platform 2 along the second direction. The second lap portion 8 is rotationally connected to the extension platform 2. The rotation axis of the second lap portion 8 relative to the extension platform 2 coincides with the axis of the second lap portion 8 itself and is arranged along the second direction. The second lap portion 8 is arranged adjacent to the second end of the extension platform 2.

[0076] The second support portion 6 is arranged in a strip structure and extends along the first direction. The second lap portion 8 is arranged above the second support portion 6 and can slide relative to the second support portion 6.

[0077] The cooperation between the first support portion 5 and the first lap portion 7 and the cooperation between the second support portion 6 and the second lap portion 8 can ensure the stability of the extension platform 2 relative to the rotary platform body 1 when sliding.

[0078] The rotation of the first support portion 5 relative to the rotary platform body 1 and the rotation of the second lap portion 8 relative to the extension platform 2 can reduce the friction between the extension platform 2 and the rotary platform body 1 when the extension platform 2 slides relative to the rotary platform body 1, reduce the resistance, and make it more convenient to adjust the position of the extension platform 2.

[0079] In specific embodiments, a composite roller bearing can be selected as the first support portion 5 and the second lap portion 8. The composite roller bearing includes two rollers, and the rotation axes of the two rollers are perpendicular. When installing the first support portion 5 and the second lap portion 8, the rotation axis of one roller can be arranged along the second direction, and the rotation axis of the other roller can be arranged along the third direction. The third direction is perpendicular to the support surface of the rotary platform body 1, that is, the third direction is perpendicular to the first direction and the second direction. The third direction is the direction shown in FIG. 3. Figure 1

[0080] When connecting the extension platform 2 and the rotary platform body 1, the extension platform 2 is in rolling contact with each roller of the composite roller bearing serving as the first support portion 5, and the rotary platform body 1 is in rolling contact with each roller of the composite roller bearing serving as the second lap portion 8. The rolling contact points between the extension platform 2 and the rotary platform body 1 are increased, and the friction between the extension platform 2 and the rotary platform body 1 can be further reduced.

[0081] ​Each first supporting part 5 can include only one composite roller bearing, or can include at least two composite roller bearings, each of which is distributed along the first direction. Each second lap part 8 can include only one composite roller bearing, or can include at least two composite roller bearings, each of which is distributed along the first direction. The number of the composite roller bearings is determined according to the bearing capacity requirement of the extension platform 2 and the sliding stroke requirement of the extension platform 2.

[0082] Specifically, the cross sections of the first longitudinal beam 3 and the second longitudinal beam 4 of the slewing platform body 1 can be shaped as shown in the figure. Figure 4

[0083] In the embodiment, the counterweight corresponds to the extension platform 2 being connected to the slewing platform body 1, the extension platform 2 extending into the interior of the slewing platform body 1, the force of the extension platform 2 on the slewing platform body 1 being closer to the slewing center of the slewing platform body 1, and the stress conditions of the first longitudinal beam 3 and the second longitudinal beam 4 of the slewing platform body 1 being optimized.

[0084] The distribution directions of the first supporting part 5 and the second lap part 8 are consistent with the first direction, the second lap part 8 is located on the side of the first supporting part 5 close to the second end of the slewing platform body 1, and when the second lap part 8 slides with the extension platform 2, the first supporting part 5 can act on the second lap part 8 to limit the second lap part 8 from sliding off the slewing platform body 1, thereby ensuring the safety of the slewing platform.

[0085] In a further embodiment, a sliding groove is arranged on the side of the first longitudinal beam 3 facing the extension platform 2 and on the side of the second longitudinal beam 4 facing the extension platform 2, the sliding groove on the first longitudinal beam 3 penetrates the end face of the first end of the first longitudinal beam 3 along the first direction, and the sliding groove on the second longitudinal beam 4 penetrates the end face of the first end of the second longitudinal beam 4 along the first direction. The second supporting part 6 is arranged in the sliding groove, and the second supporting part 6 divides the sliding groove into the first sliding channel 9 and the second sliding channel 10, and the first sliding channel 9 and the second sliding channel 10 are distributed along the third direction.

[0086] For convenience of description, it is defined that the first end of the first sliding channel 9, the first end of the second sliding channel 10, the first end of the first lap part 7, and the first end of the second supporting part 6 are respectively one end of themselves away from the second end of the slewing platform body 1, and the second end of the first sliding channel 9, the second end of the second sliding channel 10, the second end of the first lap part 7, and the second end of the second supporting part 6 are respectively one end of themselves close to the second end of the slewing platform body 1.

[0087] ​A transition passage 11 is arranged between the first slide 9 and the second slide 10, and the transition passage 11 can enable the extension platform 2 to enter one of the first slide 9 and the second slide 10 from the other. When the extension platform 2 is located in the first slide 9, the extension platform 2 can be enabled to enter the second slide 10 through the transition passage 11; when the extension platform 2 is located in the second slide 10, the extension platform 2 can be enabled to enter the first slide 9 through the transition passage 11.

[0088] The first support part 5 is arranged in the first slide 9, and no component is arranged in the second slide 10, and the first end of the second slide 10 is arranged in an open manner. The extension platform 2 can slide out of the second slide 10 to be disconnected from the rotary platform body 1.

[0089] When the extension platform 2 is installed, the extension platform 2 can be enabled to enter the inside of the rotary platform body 1 through the second slide 10, and then the extension platform 2 can be enabled to enter the inside of the first slide 9 through the transition passage 11; when the extension platform 2 is dismounted, the extension platform 2 can be enabled to enter the second slide 10 from the first slide 9 through the transition passage 11, and the extension platform 2 can be enabled to slide to be disconnected from the rotary platform body 1 through the second slide 10. In this way, when the extension platform 2 is dismounted, the first support part 5 does not need to be dismounted, and the extension platform 2 can be switched to slide through the transition passage 11, which is convenient to operate.

[0090] The rotary platform body 1 further comprises a cross beam 21, the cross beam 21 is arranged between the first longitudinal beam 3 and the second longitudinal beam 4, and the extension platform 2 is located on one side of the first end of the cross beam 21 close to the first longitudinal beam 3.

[0091] In some embodiments, the transition passage 11 is arranged at the second end of the first slide 9 and the second end of the second slide 10. Specifically, referring to Figure 2 and Figure 3 there is a gap between the second end of the second support part 6 and the cross beam 21, that is, the first slide 9 and the second slide 10 are connected through the gap. The gap serves as the transition passage 11, and can enable the second lap joint part 8 to pass in the third direction. It is necessary to ensure that the first support part 5 protrudes from the second support part 6 in the second direction, so that the first lap joint part 7 can only lap the first support part 5, and the first lap joint part 7 cannot lap the second support part 6. When the second lap joint part 8 is located above the gap, the first lap joint part 7 is located on the side of the first support part 5 close to the cross beam 21, and the extension platform 2 can be enabled to displace in the third direction. The second slide 10 is provided with a support plate 22, two ends of the support plate 22 are fixedly connected with the first longitudinal beam 3 and the second longitudinal beam 4 respectively, and when the extension platform 2 is displaced to the second slide 10, the extension platform 2 is located on the support plate 22, and the support plate 22 supports the extension platform 2.

[0092] The first support part 5 protrudes from the second support part 6 along the second direction, the second lap part 8 protrudes from the first lap part 7 along the second direction, and the second lap part 8 needs to extend into the interior of the first slide 9 when lapping with the second support part 6. The interaction between the second lap part 8 and the side wall of the first slide 9 and the interaction between the first lap part 7 and the first support part 5 can ensure the stability of the expansion platform 2 and prevent the expansion platform 2 from tilting around the axis along the second direction.

[0093] In other embodiments, the transition passage 11 is arranged at the first end of the first slide 9 and the first end of the second slide 10. Specifically, referring to Figure 7 and Figure 8 There is a gap between the first end of the second support part 6 and the first support part 5, that is, the first slide 9 and the second slide 10 are connected in communication through the gap. The gap serves as the transition passage 11, which can allow the second lap part 8 to enter from one of the first slide 9 and the second slide 10 to the other. It is necessary to ensure that the second end of the first lap part 7 has a clearance space 20 for avoiding the first support part 5 to avoid interference between the first lap part 7 and the first support part 5 when the expansion platform 2 switches the slide. Since the second lap part 8 needs to be in sliding fit with the second support part 6 and the first lap part 7 needs to be in sliding fit with the first support part 5, it is necessary to ensure the length of the second support part 6 and the length of the first lap part 7 as much as possible, and to reduce the length of the gap between the first end of the second support part 6 and the first support part 5 and the clearance space 20 along the first direction as much as possible under the premise of ensuring that the first lap part 7 and the first support part 5 do not interfere when switching the slide. In order to facilitate the switching of the slide of the expansion platform 2, a slope structure can be arranged in the second slide 10.

[0094] In order to facilitate the disassembly and assembly of the expansion platform 2, the size of the second slide 10 along the third direction can be greater than the size of the first slide 9 along the third direction.

[0095] In this embodiment, the expansion platform 2 is designed in a frame structure, including two longitudinal supports 12, two transverse supports, and a counterweight mounting plate 14. The two longitudinal supports 12 extend along the first direction and are spaced apart along the second direction. The two longitudinal supports 12 are respectively in sliding connection with the first longitudinal beam 3 and the second longitudinal beam 4.

[0096] For convenience of description, it is defined that the first end of the longitudinal support 12 is the end of itself away from the second end of the rotary platform body 1, and the second end of the longitudinal support 12 is the end of itself close to the second end of the rotary platform body 1.

[0097] The two transverse supports extend along the second direction and are spaced apart along the first direction. The transverse supports are arranged between the two longitudinal supports 12, and the ends of the transverse supports are connected to the two longitudinal supports 12 respectively. The counterweight mounting plate 14 is arranged on the longitudinal support 12 and adjacent to the first end of the longitudinal support 12, and the counterweight mounting plate 14 serves as a counterweight mounting position for mounting the counterweight.

[0098] The extension platform 2 is arranged in a frame structure, so that the structure of the extension platform 2 is simplified, the material used in processing the extension platform 2 is reduced, and the processing cost of the extension platform 2 is reduced.

[0099] For convenience of description, it is defined that one of the two transverse supports away from the second end of the rotary platform body 1 is a first transverse support 13, and the other is a second transverse support 23. The counterweight mounting plate 14 is fixedly arranged on the first end of the longitudinal support 12 and above the first transverse support 13, and the first transverse support 13 supports the counterweight mounting plate 14, so that the stability of the counterweight mounting plate 14 is improved.

[0100] The counterweight mounting plate 14 is provided with mounting holes 15, and the mounting holes 15 are provided with at least two. The counterweight is connected to the mounting holes 15 on the counterweight mounting plate 14 by bolts or the like, so that the installation of the counterweight can be realized.

[0101] In a further embodiment, a first limiting piece 16 is arranged on the rotary platform body 1, the first limiting piece 16 is located between the first transverse support 13 and the second transverse support 23, and the first limiting piece 16 can abut against the second transverse support 23. During the sliding process of the extension platform 2, the interaction between the first limiting piece 16 and the second transverse support 23 can prevent the extension platform 2 from sliding off the rotary platform body 1.

[0102] Specifically, the first limiting piece 16 can be a limiting column or a limiting baffle. As long as the second transverse support 23 can abut against it and does not interfere with the installation of the counterweight, it can be used. Only one first limiting piece 16 can be arranged, or two first limiting pieces 16 can be arranged, so that each first limiting piece 16 is spaced apart along the second direction.

[0103] A second limiting piece 17 is arranged on the first end of the longitudinal support 12, and the second limiting piece 17 can abut against the first end of at least one of the first longitudinal beam 3 and the second longitudinal beam 4. Through the interaction between the second limiting piece 17 and the first end of the first longitudinal beam 3 and / or the interaction between the second limiting piece 17 and the first end of the second longitudinal beam 4, the sliding position of the extension platform 2 can be limited to prevent the extension platform 2 from being too close to the transition channel 11 and to avoid the extension platform 2 from entering the second sliding channel 10 accidentally.

[0104] Specifically, the second limiting part 17 is selected as a limiting baffle, which can be connected to the first ends of the two longitudinal supports 12 and can abut against the first ends of the first longitudinal beam 3 and the second longitudinal beam 4. Alternatively, the first ends of the two longitudinal supports 12 can be provided with two limiting baffles, which are arranged separately and can abut against the first ends of the first longitudinal beam 3 and the second longitudinal beam 4, respectively.

[0105] The mounting holes 15 can be provided on the limiting baffles, and the counterweights can be connected to the mounting holes 15 of the limiting baffles by bolts, which can further improve the reliability of the connecting structure between the counterweights and the extension platform 2.

[0106] When the extension platform 2 needs to be detached from the rotary platform body 1, the first limiting part 16 can be detached from the rotary platform body 1, and the second limiting part 17 can be detached from the extension platform 2, so that the first lap joint part 7 of the extension platform 2 can be slid to the side of the first support part 5 close to the cross beam 21.

[0107] In the embodiment of the present application, the locking mechanism includes a first locking hole 18, a second locking hole 19 and a locking pin. The first locking hole 18 is arranged on the rotary platform body 1, the second locking hole 19 is arranged on the extension platform 2, and the first locking hole 18 and / or the second locking hole 19 is / are provided with at least two in the first direction.

[0108] The first locking hole 18 can be provided with at least two in the first direction, or the second locking hole 19 can be provided with at least two in the first direction, or both the first locking hole 18 and the second locking hole 19 can be provided with at least two in the first direction.

[0109] During the sliding of the extension platform 2 relative to the rotary platform body 1, the first locking hole 18 can be opposite to different second locking holes 19, or the second locking hole 19 can be opposite to different first locking holes 18, and the locking pin can simultaneously penetrate the first locking hole 18 and the second locking hole 19. Through the interaction between the locking pin and the hole wall of the first locking hole 18 and the interaction between the locking pin and the hole wall of the second locking hole 19, the sliding of the extension platform 2 relative to the rotary platform body 1 can be limited, and the locking of the extension platform 2 can be realized.

[0110] The above-mentioned locking mechanism can be provided with two groups, and the two groups of locking mechanisms are spaced apart in the second direction, which can improve the reliability of the locking mechanism.

[0111] In an optional embodiment, the locking mechanism can also be in the form of spring top beads and locking holes, a group of spring top beads is arranged on each side of the extension platform 2 facing the first longitudinal beam 3 and the second longitudinal beam 4, and locking holes are arranged on the first longitudinal beam 3 and the second longitudinal beam 4, the locking holes are provided in multiple, and the multiple locking holes are distributed at intervals along the first direction. When the extension platform 2 slides relative to the slewing platform body 1, the spring top beads can be opposite to different locking holes, the top bead of the spring top bead extends into the locking hole, and the interaction between the top bead and the hole wall of the locking hole can limit the sliding of the extension platform 2 relative to the slewing platform body 1, thereby achieving the locking of the extension platform 2.

[0112] In the embodiment of the application, the slewing platform further comprises a driving mechanism, which is arranged between the extension platform 2 and the slewing platform body 1, and can drive the extension platform 2 to slide relative to the slewing platform body 1.

[0113] The driving mechanism comprises a screw nut transmission mechanism, a gear and rack rotating mechanism, a pneumatic cylinder, a hydraulic cylinder or an electric cylinder and the like. The transmission assembly is arranged between the extension platform 2 and the slewing platform body 1, and by inputting power to the transmission assembly, the extension platform 2 can be driven to slide relative to the slewing platform body 1.

[0114] Specifically, a handle can be arranged at the input end of the transmission assembly, and power can be input to the transmission assembly by manual operation. An electric driving assembly such as a motor or a power pump can also be arranged at the input end of the transmission assembly, and power can be input to the transmission assembly by the electric driving assembly.

[0115] In this embodiment, the driving mechanism comprises an electric driving assembly, and at this time, the slewing platform further comprises a touch switch, which is arranged at the first end of the slewing platform body 1, and when the second end of the extension platform 2 slides to the first end of the slewing platform body 1, the extension platform 2 can contact the touch switch. The touch switch is electrically connected to the electric driving assembly, and the touch switch is a touch power-off switch, which can cause the electric driving assembly to lose power when the extension platform 2 contacts the touch switch. When the electric driving assembly loses power, the electric driving assembly cannot drive the extension platform 2 to slide any more. In this way, the extension platform 2 can be further prevented from sliding off the slewing platform body 1.

[0116] Since the bearing capacity of the connecting structure between the extension platform 2 and the slewing platform body 1 is limited, and in order to prevent the slewing platform from tipping over, after replacing the counterweight of different weights, the positions of the touch switch and the second limiting piece 17 need to be adjusted again to limit the maximum distance of the extension platform 2 sliding relative to the slewing platform body 1.

[0117] The rotary platform provided by the embodiment of the present application can be applied to working machines of different tonnages and different models, and has the advantages of wide application range, convenient counterweight installation, convenient maintenance, high universality and high economy.

[0118] For the wide application range, mainly embodied in that when the structure of the rotary platform is unchanged, the position of the extension platform 2 can be adjusted to adapt to the installation of counterweights of different weights and sizes.

[0119] For the convenient counterweight installation, mainly embodied in that during installation, the extension platform 2 can be installed first, and then slid to a position far away from the rotary platform body 1, so that the counterweight installation position is a certain distance away from other parts on the rotary platform body 1, providing space for the installation of the counterweight on the counterweight installation plate 14, facilitating operation. After the counterweight is fixedly installed on the counterweight installation position, the position of the extension platform 2 is adjusted so that the counterweight is located at the target position.

[0120] For the convenient maintenance, mainly embodied in that when the counterweight or the parts located at the first end of the rotary platform body 1 need to be overhauled and maintained, the position of the extension platform 2 can be adjusted so that the counterweight is a certain distance away from other parts on the rotary platform body 1, and a space for overhauling and maintenance operation can be formed, facilitating overhauling and maintenance.

[0121] For the high universality, mainly embodied in that for a certain model, the position of the extension platform 2 can be adjusted according to different working conditions, so as to adjust the position of the counterweight, without the need to redesign the rotary platform body 1 or replace the counterweight.

[0122] For the high economy, mainly embodied in that when a counterweight of a larger weight needs to be replaced, if the length and height dimensions of the counterweight remain unchanged, only the width dimension of the counterweight needs to be increased, without the need to change the counterweight to a material with a higher density, which can reduce the cost of the counterweight. Here, the length dimension of the counterweight is the dimension of the counterweight along the second direction, the height dimension of the counterweight is the dimension of the counterweight along the third direction, and the width dimension of the counterweight is the dimension of the counterweight along the first direction.

[0123] On the other hand, the embodiment of the present application also provides a working machine comprising the rotary platform provided by any of the above embodiments. The rotary platform provided by the above embodiments can conveniently adjust the position of the counterweight, so the working machine in the present embodiment has the advantages of convenient adjustment of the position of the counterweight and adaptability to different working conditions. The derivation process of the beneficial effects of the working machine in the embodiment of the present application is similar to that of the rotary platform, and therefore will not be described here.

[0124] In the embodiments of the present application, the type of the working machine is not limited, for example, the working machine can be an excavator, a crane, a rotary drilling machine, etc. In other words, as long as the working machine can use the slewing platform in the embodiments of the present application, it is acceptable.

[0125] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A turntable, characterized by include: The main body of the slewing platform; An extension platform is provided at the first end of the rotary platform body, and the extension platform is slidably connected to the rotary platform body, with the sliding direction set along a first direction. A counterweight mounting position is provided on the extension platform. The locking mechanism can switch between a locked state and an unlocked state. In the locked state, it can restrict the sliding of the extended platform relative to the rotary platform body. In the unlocked state, the extended platform can slide relative to the rotary platform body. The rotary platform body includes a first longitudinal beam and a second longitudinal beam. The first longitudinal beam and the second longitudinal beam are arranged side by side and distributed at intervals along a second direction, which is perpendicular to the first direction. The extended platform is located between the first longitudinal beam and the second longitudinal beam, and the extended platform is slidably connected to the first longitudinal beam and the second longitudinal beam on both sides along the second direction, respectively. Both the first longitudinal beam and the second longitudinal beam are provided with support members, and the extended platform is provided with overlapping members on both sides along the second direction. The overlapping members can overlap with the support members, and the support members and / or the overlapping members are configured as strip-shaped structures extending along the first direction. The support member includes a first support portion and a second support portion, and the overlapping member includes a first overlapping portion and a second overlapping portion; The first support part is cylindrical. The first support part is provided at the first end of the first longitudinal beam and the first end of the second longitudinal beam. The first support part can rotate around its own axis. The rotation axis of the first support part relative to the rotating platform body is arranged along the second direction. The first overlapping part is provided on both sides of the extended platform along the second direction. The first overlapping part extends along the first direction and overlaps with the first support part. The first longitudinal beam facing the extended platform and the second longitudinal beam facing the extended platform body are respectively provided with a second support portion. The second support portion extends along the first direction. The second overlapping portion is cylindrical. The extended platform facing the first longitudinal beam and the extended platform facing the second longitudinal beam are respectively provided with a second overlapping portion. The second overlapping portion can rotate around its own axis. The second overlapping portion is arranged along the second direction relative to the rotation axis of the extended platform. The second overlapping portion overlaps with the second support portion.

2. The turntable platform of claim 1, wherein, The first longitudinal beam has a groove on the side facing the extended platform and the second longitudinal beam has a groove on the side facing the extended platform. The groove passes through the end face of the first end of the first longitudinal beam and the end face of the first end of the second longitudinal beam along the first direction. The second support is disposed in the groove and divides the groove into a first slide and a second slide distributed along a third direction. The third direction is perpendicular to the first direction and the second direction. The first support is disposed in the first slide. A transition passage is arranged between the first slide and the second slide, and is configured to enable the extension platform to move from one of the first slide and the second slide to the other.

3. The turntable of claim 1, wherein The extension platform comprises: two longitudinal supports spaced apart along the second direction, each of the two longitudinal supports being slidably connected to the first longitudinal beam and the second longitudinal beam; two transverse supports spaced apart along the first direction, each of the two transverse supports being arranged between the two longitudinal supports, and the end of each of the two transverse supports being connected to the longitudinal supports, one of the two transverse supports being a first transverse support and the other being a second transverse support; a counterweight mounting plate connected to the longitudinal supports, the counterweight mounting plate being provided with mounting holes for connecting the counterweight; 4. The turntable of claim 3 wherein, the rotary platform body is provided with a first limiting member between the first transverse support and the second transverse support, the first limiting member being configured to abut against the second transverse support; the longitudinal supports are provided with a second limiting member at one end of the longitudinal supports away from the rotary platform body, the second limiting member being configured to abut against the first end of the first longitudinal beam and / or the first end of the second longitudinal beam.

5. The turntable of claim 1 wherein, The locking mechanism comprises a first locking hole, a second locking hole and a locking pin, the first locking hole being arranged on the rotary platform body, the second locking hole being arranged on the extension platform, the first locking hole and / or the second locking hole being provided with at least two along the first direction, and the locking pin being capable of simultaneously penetrating the first locking hole and the second locking hole.

6. The turntable of claim 1, wherein Further comprising: a driving mechanism configured to drive the extension platform to slide relative to the rotary platform body; the driving mechanism comprises an electric driving assembly, and the rotary platform further comprises: a touch switch arranged at the first end of the rotary platform body, the extension platform being capable of contacting the touch switch, the touch switch being electrically connected to the electric driving assembly, and the touch switch being configured to cause the electric driving assembly to lose power when the extension platform contacts the touch switch.

7. A work machine characterized by, The rotary platform comprises the rotary platform and the extension platform.

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