Basic arm assembling device

Abstract

The utility model belongs to the technical field of crane basic arm welding, and particularly relates to a basic arm assembly device which comprises a barrel centering and positioning mechanism and a support centering and positioning mechanism, the support centering and positioning mechanism comprises a support cantilever located above the barrel centering and positioning mechanism, and a support clamping piece is movably arranged on the support cantilever. The basic arm comprises a barrel, a support workpiece and a tail workpiece which are manufactured and produced separately and then are connected in a welded mode to form the basic arm. In the welding process of the support workpiece and the barrel, the barrel is hoisted to the barrel centering and positioning mechanism to be centered, clamped and fixed, the support workpiece is hoisted to the support clamping piece to be centered, clamped and fixed, and after the barrel centering and positioning mechanism and the support clamping piece are centered, clamped and fixed, the support workpiece is located over the barrel, so that alignment matching of the barrel and the support workpiece is achieved. According to the device, the support centering and positioning mechanism and the barrel centering and positioning mechanism are adopted for conducting mechanical centering and positioning on the barrel and the support workpiece, and therefore the positioning error is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of crane basic arm welding, and specifically relates to a basic arm assembly device. Background Art

[0002] The basic arm of the truck crane is the main force-bearing component. The basic arm includes a cylinder body, a tail workpiece and a luffing cylinder support workpiece. During the production process of the basic arm, the tail workpiece and the luffing cylinder support workpiece need to be positioned and welded to the cylinder body.

[0003] In the prior art, the positioning of the luffing cylinder support workpiece is performed by manual marking, specifically: first, the center line of the cylinder is marked on the cylinder and the center line of the support is marked on the luffing cylinder support workpiece; then, the cylinder is placed on the working platform and the luffing cylinder support workpiece is hoisted onto the cylinder; finally, the support center line of the luffing cylinder support workpiece is aligned with the center line of the cylinder on the cylinder. With respect to the above-mentioned related technologies, the positioning method using manual marking has a technical problem of large errors. Utility Model Content

[0004] The purpose of this application is to provide a basic arm assembly device, aiming to solve the technical problem of large positioning error.

[0005] In order to achieve the above-mentioned object, the present application provides a basic arm assembly device on one hand, wherein the basic arm comprises a cylinder and a support workpiece, and the basic arm assembly device comprises:

[0006] A cylinder centering and positioning mechanism for centering and clamping the cylinder; and

[0007] The support centering and positioning mechanism comprises a support cantilever located above the cylinder centering and positioning mechanism, and a support clamping piece is movably provided on the support cantilever, and the support clamping piece is used for centering and clamping the support workpiece so that the support workpiece can be aligned with the cylinder on the cylinder centering and positioning mechanism.

[0008] In some embodiments, the support centering positioning mechanism includes a support position adjustment component for adjusting the position of the support cantilever, one end of the support cantilever is connected to the support position adjustment component, and the other end of the support cantilever extends above the cylinder centering positioning mechanism.

[0009] In some embodiments, the support position adjustment assembly includes a support longitudinal track extending in the longitudinal direction, and the support cantilever is slidably matched with the support longitudinal track in the longitudinal direction; and / or,

[0010] The support position adjustment assembly includes a support vertical track extending in the vertical direction, and the support cantilever and the support vertical track are slidably matched in the vertical direction to adjust the vertical spacing between the support workpiece and the cylinder centering positioning mechanism; and / or,

[0011] The basic arm assembly device further comprises a control unit electrically connected to the support position adjustment assembly, wherein the control unit is configured as follows:

[0012] The position of the support cantilever is adjusted according to the dimension data of the basic arm.

[0013] In some embodiments, the support cantilever is provided with a support transverse track extending in the transverse direction, and the support clamping member is slidably matched with the support transverse track in the transverse direction.

[0014] In some embodiments, the transverse center of the support transverse track and the transverse center of the cylinder centering positioning mechanism are arranged in longitudinal alignment, and the support clamping member includes two support clamping parts symmetrically arranged on both sides of the transverse center of the support transverse track.

[0015] In some embodiments, the cylinder centering positioning mechanism includes a cylinder transverse rail and a cylinder clamp, wherein the cylinder transverse rail extends in a transverse direction and the cylinder clamp cooperates with the cylinder transverse rail in a transverse sliding manner, and the cylinder clamp is used to push and clamp the cylinder in a transverse direction.

[0016] In some embodiments, the cylinder centering and positioning mechanism further includes a driving motor drivingly matched with the cylinder clamping member, the cylinder clamping member is provided with a force sensor for detecting the clamping force of the cylinder, and the basic arm assembly device includes a control unit electrically connected to the force sensor and the driving motor, and the control unit is configured as follows:

[0017] The cylinder clamping force detected by the force sensor is received, and when the cylinder clamping force reaches a preset value, the driving motor is turned off.

[0018] In some embodiments, the basic arm also includes a tail workpiece, and the basic arm assembly device also includes a tail centering positioning mechanism for centering and positioning the tail workpiece on the end surface of the cylinder, the tail centering positioning mechanism includes a tail centering clamping assembly and a tail position adjustment assembly, the tail centering clamping assembly is used to center and clamp the tail workpiece and is connected to the tail position adjustment assembly, and the tail position adjustment assembly is used to adjust the position of the tail centering clamping assembly.

[0019] In some embodiments, the tail centering clamping assembly includes a tail transverse rail and a tail clamping member, the tail transverse rail is connected to the tail position adjustment assembly, the tail transverse rail extends in a transverse direction and the tail clamping member slides with the tail transverse rail in the transverse direction, and the tail clamping member is used to push the tail workpiece in the transverse direction and clamp the tail workpiece; and / or,

[0020] The tail centering clamping assembly comprises a tail pressing member that can be extended and retracted in the longitudinal direction, and the tail pressing member is used to push the tail workpiece in the longitudinal direction.

[0021] In some embodiments, the tail position adjustment assembly includes a tail longitudinal track extending in the longitudinal direction, and the tail centering clamping assembly is slidably matched with the tail longitudinal track in the longitudinal direction; and / or

[0022] The tail position adjustment assembly includes a tail vertical track extending in the vertical direction, and the tail centering clamping assembly is slidably matched with the tail vertical track in the vertical direction; and / or,

[0023] The basic arm assembly device further comprises a control unit electrically connected to the tail position adjustment assembly, wherein the control unit is configured as follows:

[0024] The position of the tail centering clamp assembly is adjusted according to the dimension data of the basic arm.

[0025] Through the above technical solution, the basic arm set provided by the present application has the following beneficial effects on the device:

[0026] During the welding process of the support workpiece and the cylinder, the cylinder is first hoisted onto the cylinder centering positioning mechanism and the cylinder centering positioning mechanism is used to center and clamp the cylinder, and then the support workpiece is hoisted onto the support clamping member and the support clamping member is used to center and clamp the support workpiece. In the present application, the support workpiece and the cylinder are aligned and matched by the cylinder centering positioning mechanism and the support clamping member, so that mechanical positioning is used to replace manual marking positioning, thereby reducing the positioning error of the support workpiece and the cylinder.

[0027] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0029] Figure 1 It is a structural schematic diagram of a basic arm group pair device according to a specific embodiment of the present application;

[0030] Figure 2 It is a structural schematic diagram of another perspective of the basic arm group device according to a specific embodiment of the present application;

[0031] Figure 3 It is a structural schematic diagram of a support centering and positioning mechanism according to a specific embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of the structure of the longitudinal track of the support according to a specific embodiment of the present application;

[0033] Figure 5 It is a structural schematic diagram of a support vertical track and a support horizontal track according to a specific embodiment of the present application;

[0034] Figure 6 It is a structural schematic diagram of a cylinder centering and positioning mechanism according to a specific embodiment of the present application;

[0035] Figure 7 It is a structural schematic diagram of the tail centering and positioning mechanism according to a specific embodiment of the present application;

[0036] Figure 8 It is a schematic diagram of the structure of the tail longitudinal track according to a specific embodiment of the present application;

[0037] Fig. 9 It is a schematic diagram of the structure of the tail vertical track and the tail horizontal track in a specific embodiment of the present application.

[0038] Description of Reference Numerals

[0039] 100 Basic arm assembly device 200 Cylinder

[0040] 300 Support workpiece 400 Tail workpiece

[0041] 10 Cylinder centering and positioning mechanism 11 Cylinder transverse track

[0042] 12 Cylinder clamping part 13 Base

[0043] 14 Cylinder lateral drive member 20 Support centering and positioning mechanism

[0044] 21 Support cantilever 211 Horizontal section

[0045] 212 connecting section 22 support clamping part

[0046] 23 Support longitudinal track 231 Support longitudinal moving part

[0047] 232 Support longitudinal drive member 24 Support vertical track

[0048] 241 Support vertical moving part 242 Support vertical driving part

[0049] 25 Support transverse track 26 Support transverse drive

[0050] 27 Support sleeve 30 Tail centering and positioning mechanism

[0051] 31 tail longitudinal track 311 tail longitudinal moving part

[0052] 312 tail longitudinal drive member 313 tail positioning column

[0053] 32 tail vertical track 321 tail vertical moving part

[0054] 322 tail vertical drive member 33 tail transverse track

[0055] 34 tail clamping part 35 tail lateral drive part

[0056] 36 Tail top fastener 37 Placement rack

[0057] 38 tail bushing DETAILED DESCRIPTION

[0058] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0059] The following describes the noun part of the basic armset pair device 100 according to the present application with reference to the accompanying drawings.

[0060] like Figure 1 and Figure 2 As shown, a specific embodiment of the present application provides a basic arm assembly device 100, wherein the basic arm includes a cylinder 200 and a support workpiece 300, and the basic arm assembly device 100 includes a cylinder centering and positioning mechanism 10 and a support centering and positioning mechanism 20, wherein the cylinder centering and positioning mechanism 10 is used to center and clamp the cylinder 200; the support centering and positioning mechanism 20 includes a support cantilever 21 located above the cylinder centering and positioning mechanism 10, and a support clamping member is movably provided on the support cantilever 21, and the support clamping member is used to center and clamp the support workpiece 300 so that the support workpiece 300 can be aligned and matched with the cylinder 200 on the cylinder centering and positioning mechanism 10.

[0061] The basic arm is an important component in the engineering crane, and its composition includes a cylinder 200, a support workpiece 300 and a tail workpiece 400, which are separately manufactured and then connected by centering positioning welding to form the basic arm. During the welding process of the support workpiece 300 and the cylinder 200, the cylinder 200 is hoisted onto the cylinder centering positioning mechanism 10 for centering clamping and fixing, and the support workpiece 300 is hoisted onto the support clamping member for centering clamping and fixing. After the two are respectively centering and clamping, the support workpiece 300 is located directly above the cylinder 200 to achieve the alignment of the cylinder 200 and the support workpiece 300. In the present application, the cylinder 200 and the support workpiece 300 are mechanically centered and positioned by using the support centering positioning mechanism 20 and the cylinder centering positioning mechanism 10, thereby reducing the positioning error.

[0062] Furthermore, the basic arm assembly device 100 also includes a tail centering positioning mechanism 30 for centering and positioning the tail workpiece 400 on the end surface of the cylinder 200. The cylinder 200 and the tail workpiece 400 are mechanically centered and positioned by using the tail centering positioning mechanism 30 and the cylinder centering positioning mechanism 10, thereby reducing positioning errors.

[0063] In actual construction operations, before welding, it is necessary to ensure that the center lines of the cylinder 200, the support workpiece 300 and the tail workpiece 400 are aligned. This process is called centering positioning and is completed by the basic arm assembly device 100.

[0064] It should be noted that in the present application, unless otherwise stated, after the cylinder 200 is fixed on the cylinder centering and positioning mechanism 10, the “longitudinal” used is the same as the axial direction of the cylinder 200, the “lateral” used is the same as the horizontal radial direction of the cylinder 200, the “vertical” used is the same as the vertical diameter of the cylinder 200, and the “longitudinal”, “lateral” and “vertical” are perpendicular to each other; the directional words “up” and “down” used refer to two directions opposite to each other in the vertical direction; the directional words “left” and “right” used refer to two directions opposite to each other in the lateral direction; the directional words “front” and “back” used refer to two directions opposite to each other in the longitudinal direction.

[0065] In a specific embodiment of the present application, the centering positioning is as follows: the axis of the cylinder 200 coincides with the longitudinal center line of the tail workpiece 400 , and the axis of the cylinder 200 is vertically aligned with the longitudinal center line of the support workpiece 300 .

[0066] In some embodiments, there are multiple cylinder centering positioning mechanisms 10, and the multiple cylinder centering positioning mechanisms 10 are arranged at intervals in the longitudinal direction. The vertical heights of the multiple cylinder centering positioning mechanisms 10 are the same, thereby ensuring the stability of the cylinder 200 when it is placed on the multiple cylinder centering positioning mechanisms 10.

[0067] Preferably, there are two cylinder centering positioning mechanisms 10, and the tail centering positioning mechanism 30, the support centering positioning mechanism 20 and the two cylinder centering positioning mechanisms 10 are all arranged on the same working platform, the tail centering positioning mechanism 30 is located behind the cylinder centering positioning mechanism 10, and the support centering positioning mechanism 20 is located above the cylinder centering positioning mechanism 10.

[0068] Those skilled in the art will appreciate that the longitudinal spacing between the two cylinder centering positioning mechanisms 10, the longitudinal spacing between the tail centering positioning mechanism 30 and the cylinder centering positioning mechanism 10, and the vertical spacing between the support centering positioning mechanism 20 and the cylinder centering positioning mechanism 10 all meet the positioning requirements of basic arms of most size specifications, and are not elaborated here.

[0069] like Figures 3 to 5 As shown, in some embodiments, the support centering positioning mechanism 20 includes a support position adjustment component for adjusting the position of the support cantilever 21, one end of the support cantilever 21 is connected to the support position adjustment component, and the other end of the support cantilever 21 extends to the top of the cylinder centering positioning mechanism 10, and the support clamp is arranged on the support cantilever 21 and moves with the movement of the support cantilever 21, thereby realizing the positioning of the support workpiece 300 and the cylinder 200 by the support clamp.

[0070] Preferably, the support position adjustment assembly includes a support longitudinal rail 23 extending longitudinally, and the support cantilever 21 and the support longitudinal rail 23 slide in cooperation in the longitudinal direction. Since the longitudinal position of the support workpiece 300 on the cylinder 200 also needs to meet the assembly requirements, the support clamping member is driven to move longitudinally through the sliding cooperation between the support cantilever 21 and the support longitudinal rail 23, thereby realizing the longitudinal positioning of the support workpiece 300.

[0071] Preferably, the support position adjustment assembly includes a support vertical rail 24 extending vertically, and the support cantilever 21 and the support vertical rail 24 slide in cooperation vertically, thereby driving the support clamp to move vertically to adjust the vertical spacing between the support workpiece 300 and the cylinder 200. Since a certain installation space is required to install the support workpiece 300 on the support clamp, it is necessary to adjust the support cantilever 21 and the cylinder centering positioning mechanism 10 upward to facilitate the support clamp to clamp the support workpiece 300. After the support workpiece 300 is installed on the support clamp, the support cantilever 21 is adjusted downward to make the support workpiece 300 pressed against the outer wall of the cylinder 200, thereby realizing the vertical positioning of the support workpiece 300.

[0072] Preferably, the basic arm assembly device 100 further comprises a control unit electrically connected to the support position adjustment assembly, and the control unit is configured to adjust the position of the support cantilever 21 according to the size data of the basic arm.

[0073] Specifically, the support cantilever 21 needs to be moved from the assembly position to the docking position during the centering and positioning process of the support workpiece 300. The assembly position refers to the position of the support cantilever 21 when the support workpiece 300 and the support clamp are assembled, and the docking position refers to the position of the support cantilever 21 when the support workpiece 300 and the cylinder 200 are centering and positioning. The support cantilever 21 needs to be moved vertically from the assembly position to the docking position, and the vertical movement distance is pre-set according to the size data of the basic arm.

[0074] In some embodiments, a support transverse rail 25 extending in the transverse direction is provided on the support cantilever 21, and the support clamping member slides in cooperation with the support transverse rail 25 in the transverse direction, thereby adjusting the position of the support workpiece 300 in the transverse direction to achieve transverse alignment of the support workpiece 300 and the cylinder 200.

[0075] Specifically, the support cantilever 21 includes a horizontal section 211 and a connecting section 212 . The horizontal section 211 extends in the transverse direction. The connecting section 212 connects the support position adjustment assembly and the horizontal section 211 . The support transverse rail 25 is installed on the horizontal section 211 .

[0076] Preferably, the transverse center of the support transverse rail 25 is longitudinally aligned with the transverse center of the horizontal section 211, and the transverse center of the horizontal section 211 is longitudinally aligned with the transverse center of the cylinder centering positioning mechanism 10, and the support clamping member includes two support clamping parts 22 symmetrically arranged on both sides of the transverse center of the support transverse rail 25 in the transverse direction, and the two support clamping parts 22 simultaneously move the same distance toward the transverse center of the support transverse rail 25, thereby clamping the support workpiece 300 and aligning the transverse center of the support workpiece 300 with the transverse center of the support transverse rail 25 in the longitudinal direction, thereby aligning the transverse center of the support workpiece 300 with the transverse center of the cylinder 200 on the cylinder centering positioning mechanism 10 in the longitudinal direction, which is equivalent to completing the transverse alignment of the support workpiece 300 and the cylinder 200 as long as the two support clamping parts 22 clamp the support workpiece 300.

[0077] Furthermore, a support transverse driving member 26 is provided on the support transverse track 25 for driving the two support clamping parts 22 to move toward each other or move relative to each other simultaneously in the transverse direction. The support transverse driving member 26 is preferably a screw connected to the driving motor power, and the two support clamping parts 22 are provided with a screw nut that slides with the screw. It can be understood by those skilled in the art that the support transverse driving member 26 can also be selected from other structural forms such as gear racks.

[0078] Preferably, an assembly hole is formed on the support workpiece 300, and a support sleeve 27 is provided on the support clamping portion 22, which is plugged into the assembly hole of the support workpiece 300. The support sleeve 27 and the support clamping portion 22 are detachably connected, so that it is convenient to replace the matching support sleeve 27 according to different support workpieces 300, thereby increasing the scope of use of the basic arm group for the device 100.

[0079] The present application provides a preferred embodiment of the position of a support position adjustment component and a cylinder centering positioning mechanism 10, wherein the support position adjustment component is located on the left side of the cylinder centering positioning mechanism 10, the left end of the support cantilever 21 is connected to the support position adjustment component, and the right end extends to the top of the cylinder centering positioning mechanism 10. By arranging the support position adjustment component on the side of the cylinder centering positioning mechanism 10 and arranging the support cantilever 21 above the cylinder centering positioning mechanism 10, the rationality of the arrangement of the basic arm group pair device 100 is increased.

[0080] Specifically, a support longitudinal moving member 231 and a support longitudinal driving member 232 for driving the support longitudinal moving member 231 are provided on the support longitudinal track 23; the lower end of the support vertical track 24 is detachably connected to the support longitudinal moving member 231 and is driven by the support longitudinal driving member 232 to move the support longitudinal moving member 231 longitudinally to drive the support vertical track 24 to move longitudinally; a support vertical moving member 241 and a support vertical driving member 242 for driving the support vertical moving member 241 are provided on the support vertical track 24; the right end of the support cantilever 21 is detachably connected to the support vertical driving member 242 and is driven by the support vertical driving member 242 to move the support vertical moving member 241 vertically to drive the support cantilever 21 to move vertically.

[0081] Furthermore, a support positioning column is provided on the support longitudinal moving member 231, and a support positioning groove which is plugged and matched with the positioning column is provided on the support longitudinal rail 23.

[0082] Those skilled in the art can understand that the support longitudinal drive member 232 and the support vertical drive member 242 can adopt various specific structures such as ball screws, gear racks, etc. that can be connected to the drive motor, and other structural forms that can achieve drive should also fall within the scope of protection of this application.

[0083] like Figure 6 As shown, in some embodiments, the cylinder centering positioning mechanism 10 includes a cylinder transverse rail 11 and a cylinder clamp, the cylinder transverse rail 11 extends laterally and the cylinder clamp cooperates with the cylinder transverse rail 11 in a transverse sliding manner, and the cylinder clamp is used to push and clamp the cylinder 200 in the transverse direction.

[0084] Specifically, the cylinder centering and positioning mechanism 10 includes a base 13 , the cylinder 200 is mounted on the base 13 , and the transverse rails of the cylinder 200 and the cylinder clamping piece are both arranged on the upper part of the base 13 .

[0085] Preferably, the transverse center of the cylinder transverse track 11 is vertically aligned with the transverse center of the base 13, and the cylinder clamping member includes two cylinder clamping parts 12 symmetrically arranged on both sides of the transverse center of the cylinder transverse track 11 in the transverse direction, and the two cylinder clamping parts 12 simultaneously move the same distance toward the transverse center of the cylinder transverse track 11 to clamp the cylinder 200, which is equivalent to completing the transverse alignment of the cylinder 200 and the base 13 as long as the two cylinder clamping parts 12 clamp the cylinder 200.

[0086] Furthermore, a cylinder transverse driving member 14 for driving the two cylinder clamping parts 12 to move toward or away from each other in the transverse direction is provided on the cylinder transverse track 11. The cylinder transverse driving member 14 can adopt a variety of specific structures that can be connected to the driving motor, such as a ball screw, a gear rack, etc. Other structural forms that can achieve drive should also fall within the protection scope of this application. The cylinder clamping part 12 is set with a connection structure according to the specific structure of the cylinder transverse driving member 14. For example, the cylinder transverse driving member 14 adopts a ball screw, and the cylinder clamping part 12 is provided with a ball that cooperates with the ball screw to move.

[0087] Preferably, the cylinder centering and positioning mechanism 10 also includes a cylinder transverse driving motor that cooperates with the cylinder transverse driving member 14, and a force sensor for detecting the cylinder clamping force is provided on the cylinder clamping member. The basic arm assembly device 100 includes a control unit electrically connected to the force sensor and the cylinder transverse driving motor, and the control unit is configured to: receive the cylinder clamping force detected by the force sensor, and when the cylinder clamping force reaches a preset value, turn off the cylinder transverse driving motor.

[0088] The working principle of the force sensor and the control unit is well known to those skilled in the art. The preset value of the cylinder clamping force is set by the operator based on experience. When the force sensor detects that the pressure applied by the cylinder 200 reaches the preset value, it sends a stop signal to the control unit. After receiving the stop signal, the control unit turns off the cylinder lateral drive motor. At this time, the cylinder clamping part 12 does not loosen to maintain the cylinder clamping force to clamp the cylinder 200.

[0089] like Figures 7 to 9 As shown, in some embodiments, the tail centering positioning mechanism 30 includes a tail centering clamping assembly and a tail position adjustment assembly, wherein the tail centering clamping assembly is used to center and clamp the tail workpiece 400 and is connected to the tail position adjustment assembly, and the tail position adjustment assembly is used to adjust the position of the tail centering clamping assembly.

[0090] Specifically, after the cylinder 200 is placed on the cylinder centering positioning mechanism 10, the tail workpiece 400 is centered and positioned. First, the tail workpiece 400 needs to be installed on the tail centering clamping assembly, and then the position of the tail centering clamping assembly is adjusted using the tail position adjustment assembly to drive the tail workpiece 400 to move until the tail workpiece 400 and the end face of the cylinder 200 are centered and positioned.

[0091] Preferably, the tail position adjustment assembly includes a tail longitudinal track 31 extending in the longitudinal direction, and the tail centering clamping assembly is slidably matched with the tail longitudinal track 31 in the longitudinal direction.

[0092] Specifically, since the centering and positioning of the tail workpiece 400 is performed after the cylinder 200 is placed on the cylinder centering and positioning mechanism 10, a certain installation space is required for the tail workpiece 400 to be installed on the tail centering clamping assembly, and the longitudinal distance between the tail centering clamping assembly and the end face of the cylinder 200 needs to be increased by sliding cooperation between the tail centering clamping assembly and the tail longitudinal track 31, thereby facilitating the installation of the tail workpiece 400. After the installation of the tail workpiece 400 is completed, the longitudinal distance between the tail centering clamping assembly and the end face of the cylinder 200 is reduced by sliding cooperation between the tail centering clamping assembly and the tail longitudinal track 31, thereby realizing the longitudinal positioning of the tail workpiece 400.

[0093] Preferably, the tail position adjustment assembly includes a tail vertical rail 32 extending vertically, and the tail centering clamping assembly slides vertically with the tail vertical rail 32 to achieve vertical movement of the tail centering clamping assembly through the tail vertical rail 32, thereby achieving vertical centering of the tail workpiece 400.

[0094] Preferably, the basic arm assembly device 100 further comprises a control unit electrically connected to the tail position adjustment assembly, and the control unit is configured to adjust the position of the tail centering clamping assembly according to the size data of the basic arm.

[0095] Specifically, the tail centering clamping assembly needs to be moved from the assembly position to the docking position during the centering and positioning process of the tail workpiece 400. The assembly position refers to the position where the tail workpiece 400 is installed on the tail centering clamping assembly, and the docking position refers to the position where the tail workpiece 400 and the end face of the cylinder 200 are centered. Moving the assembly position to the docking position requires moving the tail centering clamping assembly vertically and longitudinally. The vertical movement distance is pre-set according to the vertical length of the tail workpiece 400 and the diameter of the cylinder 200, and the longitudinal movement distance is pre-set according to the longitudinal length of the tail workpiece 400 and the axial length of the cylinder 200.

[0096] Preferably, the tail centering clamping assembly includes a tail transverse rail 33 and a tail clamping piece, the tail transverse rail 33 is connected to the tail position adjustment assembly, the tail transverse rail 33 extends laterally and the tail clamping piece slides with the tail transverse rail 33 laterally, the tail clamping piece is used to push the tail workpiece 400 laterally and clamp the tail workpiece 400, and the tail workpiece 400 is moved laterally by sliding with the tail clamping piece and the tail transverse rail 33, thereby realizing the lateral centering of the tail workpiece 400.

[0097] Specifically, the tail clamping member includes two tail clamping parts 34 symmetrically arranged on both sides of the transverse center of the tail transverse rail 33 in the transverse direction. The two tail clamping parts 34 move the same distance toward the transverse center of the tail transverse rail 33 at the same time, thereby clamping the tail workpiece 400 and aligning the transverse center of the tail workpiece 400 with the transverse center of the tail transverse rail 33 in the longitudinal direction, thereby aligning the transverse center of the tail workpiece 400 with the transverse center of the cylinder 200 on the cylinder centering positioning mechanism 10 in the longitudinal direction, which is equivalent to completing the transverse alignment of the tail workpiece 400 and the cylinder 200 as long as the two tail clamping parts 34 clamp the tail workpiece 400.

[0098] Further, a tail transverse driving member 35 for driving the two tail clamping parts 34 to move toward each other or move relative to each other in the transverse direction is provided on the tail transverse track 33. The tail transverse driving member 35 is preferably a screw connected to the driving motor power, and the two tail clamping parts 34 are provided with a screw nut that slides with the screw. It can be understood by those skilled in the art that the tail transverse driving member 35 can also be selected from other structural forms such as gear racks.

[0099] Preferably, the tail centering clamping assembly includes a tail pressing member 36 that can be extended and retracted in the longitudinal direction. The tail pressing member 36 is used to push the tail workpiece 400 in the longitudinal direction. After the tail clamping member drives the tail workpiece 400 to move in the longitudinal direction until the longitudinal positioning of the tail workpiece 400 is achieved, the tail pressing member 36 is used to tighten the tail workpiece 400 in the longitudinal direction, so that the tail workpiece 400 is tightly attached to the end face of the cylinder 200, thereby facilitating the welding of the tail workpiece 400 and the cylinder 200.

[0100] Specifically, the tail tightening member 36 is hydraulically driven, and a force sensor for detecting the tail tightening force is provided on the tail tightening member 36. The force sensor and the hydraulic pump are both electrically connected to the control unit. The control unit is configured to: receive the tail tightening force detected by the force sensor, and when the tail tightening force reaches a preset value, turn off the hydraulic pump.

[0101] Those skilled in the art will appreciate that the rear tightening member 36 may also be driven by a motor or other driving methods, and other driving methods also fall within the protection scope of the present application.

[0102] The present application provides a preferred embodiment of the position of a tail position adjustment component and a cylinder centering positioning mechanism 10, wherein the lateral center of the tail position adjustment component is longitudinally aligned with the lateral center of the cylinder centering positioning mechanism 10, that is, the tail position adjustment component is located directly behind the cylinder centering positioning mechanism 10.

[0103] Specifically, the tail longitudinal track 31 is provided with a tail longitudinal moving member 311 and a tail longitudinal driving member 312 for driving the tail longitudinal moving member 311, the lower end of the tail vertical track 32 is detachably connected with the tail longitudinal moving member 311 and is driven by the tail longitudinal driving member 312 to move longitudinally to drive the tail vertical track 32 to move longitudinally; the tail vertical track 32 is provided with a tail vertical moving member 321 and a tail vertical driving member 322 for driving the tail vertical moving member 321, the front end of the tail vertical moving member 321 is connected with the tail transverse track 33 and is driven by the tail vertical driving member 322 to move vertically to drive the tail transverse track 33 to move vertically.

[0104] Furthermore, a placement rack 37 is provided on the tail vertical movable member 321, and the tail transverse rail 33 passes through the placement rack 37 horizontally. The upper part of the placement rack 37 is located above the tail transverse rail 33 and is fixedly connected to the tail vertical movable member 321, and the lower part of the placement rack 37 is located below the tail transverse rail 33 and is fixedly connected to the tail vertical movable member 321. The placement rack 37 is located as a whole between the two tail clamping parts 34, and the tail pressing member 36 is fixed on the placement rack 37 so that the tail pressing member 36 is suspended above the tail transverse rail 33 and can contact the tail workpiece 400.

[0105] Preferably, a tail positioning column 313 is provided on the tail longitudinal moving member 311 , and a tail positioning groove plugged and matched with the tail positioning column 313 is provided on the tail longitudinal rail 31 .

[0106] Those skilled in the art can understand that the tail longitudinal drive member 312 and the tail vertical drive member 322 can adopt various specific structures such as ball screws, gear racks, etc. that can be connected to the drive motor, and other structural forms that can achieve drive should also fall within the scope of protection of this application.

[0107] Preferably, an assembly hole is formed on the tail workpiece 400, and a tail sleeve 38 is provided on the tail clamping portion 34, which is plugged into the assembly hole of the tail workpiece 400. The tail sleeve 38 and the tail clamping portion 34 are detachably connected, so as to facilitate replacement of the matching tail sleeve 38 according to different tail workpieces 400, thereby increasing the scope of use of the basic arm group for the device 100.

[0108] In a specific embodiment of the present application, the basic arm assembly device 100 uses a control unit to control the cylinder centering and positioning mechanism 10, the support centering and positioning mechanism 20 and the tail centering and positioning mechanism 30, and before starting the operation, the cylinder centering and positioning mechanism 10, the support centering and positioning mechanism 20 and the tail centering and positioning mechanism 30 are all located at the initial position, and after the operation is completed, the cylinder centering and positioning mechanism 10, the support centering and positioning mechanism 20 and the tail centering and positioning mechanism 30 are all returned to the initial position. The driving motors of the cylinder centering and positioning mechanism 10, the support centering and positioning mechanism 20 and the tail centering and positioning mechanism 30 are all servo motors, and encoders are installed on the rotating shaft, so as to realize the precise positioning of the support workpiece 300 and the tail workpiece 400 according to the size data of the basic arm, thereby improving the level of production automation.

[0109] The steps of basic arm assembly include: cylinder centering and positioning, support workpiece lateral centering, support workpiece longitudinal positioning, support workpiece vertical positioning, tail workpiece lateral centering, tail workpiece vertical centering, tail workpiece longitudinal positioning, as follows:

[0110] Cylinder centering positioning: The cylinder clamping force is the preset value of the control unit, the cylinder 200 is hoisted onto the base 13, and the drive motor of the tail transverse drive member 35 is started. When the cylinder clamping force on the cylinder clamping part 12 reaches the preset value, the drive motor is automatically turned off;

[0111] Lateral centering of the support workpiece: The lateral width of the support workpiece 300 is a preset value of the control unit. The support workpiece 300 is hoisted to the support clamping part 22, and the drive motor of the support lateral drive member 26 is started. When the two support clamping parts 22 move closer to each other until the distance between them is the lateral width of the support workpiece 300, the drive motor is automatically turned off, thereby realizing the lateral centering of the support workpiece 300;

[0112] Support workpiece longitudinal positioning: the distance between the longitudinal center of the support workpiece 300 and the end surface of the cylinder 200 is a preset value of the control unit, and the drive motor of the support longitudinal drive member 232 is started to adjust the longitudinal position of the support workpiece 300 in the longitudinal direction until the distance between the longitudinal center of the support workpiece 300 and the end surface of the cylinder 200 reaches the preset value, thereby realizing the longitudinal positioning of the support workpiece 300;

[0113] Vertical positioning of the support workpiece: the vertical distance between the vertical center of the support workpiece 300 and the outer wall surface of the cylinder 200 is a preset value of the control unit, and the drive motor of the support vertical drive member 242 is started to vertically adjust the vertical position of the support workpiece 300 until the vertical distance between the vertical center of the support workpiece 300 and the outer wall surface of the cylinder 200 reaches the preset value, thereby realizing the vertical positioning of the support workpiece 300;

[0114] Lateral centering of the tail workpiece: The lateral width of the tail workpiece 400 is a preset value of the control unit. The tail workpiece 400 is hoisted to the tail clamping part 34, and the driving motor of the tail lateral driving member 35 is started. When the two tail clamping parts 34 move closer to each other until the distance between them is the lateral width of the tail workpiece 400, the driving motor is automatically turned off, thereby realizing the lateral centering of the tail workpiece 400;

[0115] Vertical centering of the tail workpiece: the vertical distance between the vertical center of the tail workpiece 400 and the axis of the cylinder 200 is a preset value of the control unit, and the drive motor of the tail vertical drive member 322 is started to vertically adjust the vertical position of the tail workpiece 400 until the vertical distance between the vertical center of the tail workpiece 400 and the axis of the cylinder 200 reaches the preset value, thereby realizing the vertical centering of the tail workpiece 400;

[0116] Longitudinal positioning of the tail workpiece: The longitudinal distance between the longitudinal center of the tail workpiece 400 and the end face of the cylinder 200 is a preset value of the control unit. The drive motor of the tail longitudinal drive member 312 is started to adjust the longitudinal position of the tail workpiece 400 in the longitudinal direction until the longitudinal distance between the longitudinal center of the tail workpiece 400 and the end face of the cylinder 200 reaches the preset value, thereby realizing the longitudinal positioning of the tail workpiece 400.

[0117] In the present application, the centering and positioning welding of the basic arm is performed by a control unit, thereby reducing the dependence on the manual skill level and further improving the quality of the centering and positioning welding.

[0118] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0119] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0120] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0121] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A basic arm assembly device, characterized in that: The basic arm comprises a cylinder (200) and a support workpiece (300), and the basic arm assembly device (100) comprises: A cylinder centering and positioning mechanism (10) for centering and clamping the cylinder (200); and A support centering and positioning mechanism (20) comprises a support cantilever (21) located above the cylinder centering and positioning mechanism (10), wherein a support clamping member is movably provided on the support cantilever (21), and the support clamping member is used for centering and clamping a support workpiece (300) so that the support workpiece (300) can be aligned with the cylinder (200) on the cylinder centering and positioning mechanism (10).

2. The basic arm assembly device according to claim 1, characterized in that: The support centering and positioning mechanism (20) comprises a support position adjustment component for adjusting the position of the support cantilever (21); one end of the support cantilever (21) is connected to the support position adjustment component, and the other end of the support cantilever (21) extends to the top of the cylinder centering and positioning mechanism (10).

3. The basic arm assembly device according to claim 2, characterized in that: The support position adjustment assembly comprises a support longitudinal track (23) extending in the longitudinal direction, and the support cantilever (21) and the support longitudinal track (23) are slidably matched in the longitudinal direction; and / or, The support position adjustment assembly comprises a support vertical track (24) extending in the vertical direction, and the support cantilever (21) and the support vertical track (24) are slidably matched in the vertical direction to adjust the vertical spacing between the support workpiece (300) and the cylinder centering positioning mechanism (10); and / or, The basic arm assembly device (100) further comprises a control unit electrically connected to the support position adjustment assembly, wherein the control unit is configured to: The position of the support cantilever (21) is adjusted according to the dimension data of the basic arm.

4. The basic arm assembly device according to claim 1, characterized in that: The support cantilever (21) is provided with a support transverse track (25) extending in the transverse direction, and the support clamping piece is slidably matched with the support transverse track (25) in the transverse direction.

5. The basic arm assembly device according to claim 4, characterized in that: The transverse center of the support transverse track (25) and the transverse center of the cylinder centering positioning mechanism (10) are arranged in longitudinal alignment, and the support clamping member includes two support clamping parts (22) symmetrically arranged on both sides of the transverse center of the support transverse track (25).

6. The basic arm assembly device according to claim 1, characterized in that: The cylinder centering and positioning mechanism (10) comprises a cylinder transverse rail (11) and a cylinder clamping piece, wherein the cylinder transverse rail (11) extends in a transverse direction and the cylinder clamping piece and the cylinder transverse rail (11) are slidably matched in the transverse direction, and the cylinder clamping piece is used to push and clamp the cylinder (200) in the transverse direction.

7. The basic arm assembly device according to claim 6, characterized in that: The cylinder centering and positioning mechanism (10) further comprises a driving motor drivingly matched with the cylinder clamping member, the cylinder clamping member is provided with a force sensor for detecting the clamping force of the cylinder, the basic arm assembly device (100) comprises a control unit electrically connected to the force sensor and the driving motor, the control unit being configured as follows: The cylinder clamping force detected by the force sensor is received, and when the cylinder clamping force reaches a preset value, the driving motor is turned off.

8. The basic arm assembly device according to claim 1, characterized in that: The basic arm also includes a tail workpiece (400), and the basic arm assembly device (100) also includes a tail centering positioning mechanism (30) for centering and positioning the tail workpiece (400) on the end surface of the cylinder (200), the tail centering positioning mechanism (30) including a tail centering clamping assembly and a tail position adjustment assembly, the tail centering clamping assembly is used to center and clamp the tail workpiece (400) and is connected to the tail position adjustment assembly, and the tail position adjustment assembly is used to adjust the position of the tail centering clamping assembly.

9. The basic arm assembly device according to claim 8, characterized in that: The tail centering clamping assembly comprises a tail transverse rail (33) and a tail clamping member, wherein the tail transverse rail (33) is connected to the tail position adjustment assembly, the tail transverse rail (33) extends in a transverse direction and the tail clamping member and the tail transverse rail (33) are slidably matched in the transverse direction, and the tail clamping member is used to push the tail workpiece (400) in a transverse direction and clamp the tail workpiece (400); and / or, The tail centering clamping assembly comprises a tail pressing member (36) which can be extended and retracted in the longitudinal direction, and the tail pressing member (36) is used to push the tail workpiece (400) in the longitudinal direction.

10. The basic arm assembly device according to claim 8, characterized in that: The tail position adjustment assembly comprises a tail longitudinal track (31) extending in the longitudinal direction, and the tail centering clamping assembly is slidably matched with the tail longitudinal track (31) in the longitudinal direction; and / or The tail position adjustment assembly comprises a tail vertical rail (32) extending in the vertical direction, and the tail centering clamping assembly and the tail vertical rail (32) are slidably matched in the vertical direction; and / or, The basic arm assembly device (100) further comprises a control unit electrically connected to the tail position adjustment assembly, wherein the control unit is configured to: The position of the tail centering clamp assembly is adjusted according to the dimension data of the basic arm.

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