Counterweight positioning tool

Abstract

A counter weight positioning tool is used for positioning a counter weight part of engineering machinery and comprises a tool platform used for bearing the counter weight part. And the plurality of positioning assemblies are used for limiting the position of the counterweight piece. The positioning assembly comprises an upper positioning plate, a lower positioning plate and at least one positioning support arranged between the upper positioning plate and the lower positioning plate. The positioning support comprises a top plate, a bottom plate and a supporting plate connected between the top plate and the bottom plate. The upper positioning plate is detachably arranged on the top plate of the positioning support closest to the upper positioning plate, the lower positioning plate is detachably arranged on the bottom plate of the positioning support closest to the lower positioning plate, and the upper positioning plate and the lower positioning plate are both used for being matched with the outer contour of the balance weight part so as to limit the position of the balance weight part. Through the counter weight positioning tool, the counter weight assembly efficiency is improved, the universality of the counter weight is improved, interchange of the counter weight with the same outer contour is achieved, and the use cost of customers is reduced.

Description

Technical Field

[0001] The present application generally relates to the technical field of engineering machinery manufacturing, and more specifically, to a counterweight positioning tool. Background Art

[0002] The counterweight of construction machinery refers to the counterweighting of construction machinery during its use to achieve balance and improve the safety of operation. The working environment of construction machinery is very complex. Different heights and weights are required in different situations, and the weight that the structure of the machinery itself can bear is limited. This requires the use of counterweights to meet the use requirements of different heights and weights in different situations. The counterweights of construction machinery are mostly box structures, which are assembled into counterweight parts by multiple counterweight blocks. At present, in the production process of counterweight parts, each counterweight block is welded and assembled in a free state, resulting in the outer contour size of the counterweight parts cannot be effectively controlled. Therefore, a counterweight positioning tool is needed to overcome the limitations of the existing technology and improve the assembly efficiency of counterweight parts; improve the versatility of counterweight parts, realize the interchangeability of counterweight parts with the same external contour, and reduce customer use costs; effectively control welding deformation, improve the accuracy of counterweight parts, and ensure the consistency of the counterweight part contour. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a counterweight positioning tool that can improve the efficiency of assembling counterweight parts of engineering machinery; improve the versatility of counterweight parts, realize the interchangeability of counterweight parts with the same external contour, and reduce customer usage costs.

[0004] The present application provides a counterweight positioning tool for positioning a counterweight of an engineering machinery, characterized in that the counterweight positioning tool comprises: a tooling platform for carrying the counterweight; a plurality of positioning components for limiting the position of the counterweight, the positioning components comprising an upper positioning plate, a lower positioning plate and at least one positioning support arranged between the upper positioning plate and the lower positioning plate; the positioning support comprises a top plate, a bottom plate and a support plate connected between the top plate and the bottom plate, the upper positioning plate is detachably mounted on the top plate of the positioning support closest to the upper positioning plate, the lower positioning plate is detachably mounted on the bottom plate of the positioning support closest to the lower positioning plate, the upper positioning plate and the lower positioning plate are both used to cooperate with the outer contour of the counterweight to limit the position of the counterweight, the positioning support located at the bottom is fixed on the tooling platform, the bottom plate of the positioning support and the tooling platform clamp the lower positioning plate between the bottom plate of the positioning support and the tooling platform.

[0005] In one embodiment, the top plate includes a top plate connecting section and two top plate limiting sections respectively connected to both ends of the top plate connecting section, the top plate limiting section and the top plate connecting section are both arranged in the same plane, and the length directions of the two top plate limiting sections are perpendicular to each other; the bottom plate includes a bottom plate connecting section and two bottom plate limiting sections respectively connected to both ends of the bottom plate connecting section, the bottom plate limiting section and the bottom plate connecting section are both arranged in the same plane, and the length directions of the two bottom plate limiting sections are perpendicular to each other.

[0006] In one embodiment, a top plate positioning hole is provided at the end of each top plate limiting section, a bottom plate positioning hole is provided at the end of each bottom plate limiting section, and a platform positioning hole corresponding to the top plate positioning hole and the bottom plate positioning hole is provided on the tooling platform. The positioning assembly also includes a positioning pin, which passes through the top plate positioning hole, the bottom plate positioning hole and the platform positioning hole to install the positioning support on the tooling platform.

[0007] In one embodiment, there are multiple positioning supports, and the positioning pins sequentially penetrate the top plate positioning holes, the bottom plate positioning holes, and the platform positioning holes of the multiple positioning supports to install the multiple positioning supports on the tooling platform.

[0008] In one embodiment, the end of the top plate limiting section and the portion close to the top plate connecting section are both provided with a top plate fastening hole, and the end of the bottom plate limiting section and the portion close to the bottom plate connecting section are both provided with a bottom plate fastening hole, and in any two adjacent positioning supports among the multiple positioning supports, the top plate fastening hole of one positioning support is aligned with the bottom plate fastening hole of another positioning support; the positioning assembly also includes a fastener, which passes through the top plate fastening holes and the bottom plate fastening holes that are aligned with each other in any two adjacent positioning supports to fix the two adjacent positioning supports to each other.

[0009] In one embodiment, the upper positioning plate includes a corresponding first upper positioning segment and a second upper positioning segment which are arranged in the same plane and are perpendicular to each other in length directions, and the lower positioning plate includes a corresponding first lower positioning segment and a second lower positioning segment which are arranged in the same plane and are perpendicular to each other in length directions, and the first upper positioning segment, the second upper positioning segment, the first lower positioning segment, and the second lower positioning segment are all used to engage with the outer contour of the counterweight.

[0010] In one embodiment, the portion of the first upper positioning section abutting against the top plate and the portion of the second upper positioning section abutting against the top plate are both provided with upper mounting holes, and the first mounting holes correspond to the fastening holes of the top plate; the portion of the first lower positioning section abutting against the bottom plate and the portion of the second lower positioning section abutting against the bottom plate are both provided with lower mounting holes, and the second mounting holes correspond to the fastening holes of the bottom plate; the fastener also passes through the first mounting hole and the top plate fastening hole to fix the upper positioning plate and the top plate, and passes through the second mounting hole and the bottom plate fastening hole to fix the lower positioning plate and the bottom plate.

[0011] In one embodiment, there are multiple positioning supports, and the fastener passes through the upper mounting hole and the top plate fastening hole on the top plate of the positioning support located at the top to fix the upper positioning plate to the positioning support; the fastener passes through the lower mounting hole and the bottom plate fastening hole on the bottom plate of the positioning support located at the bottom to fix the upper positioning plate to the positioning support.

[0012] In one embodiment, the edges of the first upper positioning segment and the second upper positioning segment for engaging with the outer contour of the counterweight extend by 1-3 mm beyond the edges of the first lower positioning segment and the second lower positioning segment for engaging with the outer contour of the counterweight.

[0013] In one embodiment, the positioning assembly further comprises a clamp, which is mounted on the upper positioning plate and is used to clamp the counterweight when the counterweight is placed on the tooling platform.

[0014] The technical solution of the present application utilizes one or more positioning supports in the positioning assembly to be stacked in a direction perpendicular to the plane where the tooling platform is located to adapt to different heights of counterweights, and utilizes an upper positioning plate detachably mounted on the top plate of the positioning support and a lower positioning plate detachably mounted on the bottom plate of the positioning support to adapt to counterweights of different shapes. This improves the efficiency of assembling the counterweights and the assembly accuracy of the counterweights. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a counterweight positioning tool according to an embodiment of the present application.

[0017] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the positioning support of the counterweight positioning tooling shown.

[0018] Figure 3 for Figure 1 A bottom view schematic diagram of the tooling platform of the counterweight positioning tooling shown. DETAILED DESCRIPTION

[0019] The specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the description of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0020] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", etc. 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the products of the application are usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present application.

[0022] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0023] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0024] See also Figure 1 , Figure 2 A counterweight positioning tool 100 of one embodiment is used to position the counterweight of an engineering machinery. The counterweight positioning tool 100 includes: a tooling platform 10 for carrying the counterweight and assembling and positioning the counterweight; and a plurality of positioning components 20 for limiting the position of the counterweight and adapting according to the outer contour of the counterweight.

[0025] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The positioning assembly 20 includes an upper positioning plate 21, which is used to adapt and cooperate with the outer contour of the top of the counterweight; a lower positioning plate 22, which is used to adapt and cooperate with the outer contour of the bottom of the counterweight; and at least one positioning support 23 arranged between the upper positioning plate 21 and the lower positioning plate 22. When there are multiple positioning supports 23 in the positioning assembly 20, the positioning supports 23 are stacked in a direction perpendicular to the plane where the tooling platform 10 is located. The positioning support 23 is used to fix the upper positioning plate 21 and the lower positioning plate 22 and adapt according to the height of the counterweight, so that the height of the upper positioning plate 21 is always consistent with the height of the top of the counterweight, and the height of the lower positioning plate 22 is always consistent with the height of the bottom of the counterweight.

[0026] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The positioning support 23 includes a top plate 231, which is used to be fixedly connected with the upper positioning plate 21 and / or fixedly connected with the bottom plate 232 of another positioning support 23 when the positioning assembly 20 has multiple positioning supports 23; a bottom plate 232, which is used to be fixedly connected with the lower positioning plate 22 and / or fixedly connected with the top plate 231 of another positioning support 23 when the positioning assembly 20 has multiple positioning supports 23; and a support plate 233 connected between the top plate 231 and the bottom plate 232. The upper positioning plate 21 is detachably mounted on the top plate 231 of the positioning support 23 closest to the upper positioning plate 21, and the lower positioning plate 22 is detachably mounted on the bottom plate 232 of the positioning support 23 closest to the lower positioning plate 22.

[0027] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2When there is only one positioning support 23 in the positioning assembly 20, the upper positioning plate 21 is detachably mounted on the top plate 231 of the positioning support 23, and the lower positioning plate 22 is detachably mounted on the bottom plate 232 of the positioning support 23. When there are multiple positioning supports 23 in the positioning assembly 20, the upper positioning plate 21 is detachably mounted on the top plate 231 of the uppermost positioning support 23, so that the height of the upper positioning plate 21 is consistent with the height of the top of the counterweight and matches the outer contour of the top of the counterweight; the lower positioning plate 22 is detachably mounted on the bottom plate 232 of the lowermost positioning support 23, so that the height of the lower positioning plate 22 is consistent with the height of the bottom of the counterweight and matches the outer contour of the bottom of the counterweight.

[0028] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The upper positioning plate 21 and the lower positioning plate 22 are both used to cooperate with the outer contour of the counterweight to limit the position of the counterweight. When there are multiple positioning supports 23 in the positioning assembly 20, the positioning support 23 located at the bottom is fixed on the tooling platform 10, and the lower positioning plate 22 is detachably mounted on the bottom plate 232 of the positioning support 23 located at the bottom. The bottom plate 232 of the positioning support 23 and the tooling platform 10 clamp the lower positioning plate 22 between the bottom plate 232 of the positioning support 23 and the tooling platform 10 to cooperate with the outer contour of the bottom of the counterweight.

[0029] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The top plate 231 of the positioning support 23 includes a top plate connecting section for connecting two limiting sections; two top plate limiting sections respectively connected to both ends of the top plate connecting section are used to limit the position of the upper positioning plate 21 and / or the bottom plate 232 of another positioning support 23 when fixedly connected to the upper positioning plate 21 and / or fixedly connected to the bottom plate 232 of another positioning support 23. The top plate limiting section and the top plate connecting section are both arranged in the same plane, and the length directions of the two top plate limiting sections are perpendicular to each other.

[0030] Figure 1 , Figure 2 , Figure 3 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 , Figure 3The bottom plate 232 of the positioning support 23 includes a bottom plate connecting section and two bottom plate limiting sections respectively connected to both ends of the bottom plate connecting section, which are used to limit the position of the lower positioning plate 22 and / or the top plate 231 of another positioning support 23 when fixedly connected to the lower positioning plate 22 and / or fixedly connected to the top plate 231 of another positioning support 23. The bottom plate limiting section and the bottom plate connecting section are both arranged in the same plane, and the length directions of the two bottom plate limiting sections are perpendicular to each other.

[0031] Figure 1 , Figure 2 , Figure 3 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 , Figure 3 A top plate positioning hole 231A is provided at the end of each top plate limiting section, a bottom plate positioning hole 232A is provided at the end of each bottom plate limiting section, and a platform positioning hole 11 corresponding to the top plate positioning hole 231A and the bottom plate positioning hole 232A is provided on the tooling platform 10. The positioning pin 24 passes through the top plate positioning hole 231A, the bottom plate positioning hole 232A and the platform positioning hole 11 in sequence, so as to position the positioning support 23 on the tooling platform 10.

[0032] Figure 1 , Figure 2 , Figure 3 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 , Figure 3 The tail of the locating pin 24 is provided with a thread, and the inner side of the platform locating hole 11 is also provided with a thread. When there is only one locating support 23 in the positioning assembly 20, the locating pin 24 passes through the top plate locating hole 231A, the bottom plate locating hole 232A and the platform locating hole 11 in sequence. The thread at the tail of the locating pin 24 cooperates with the thread on the inner side of the platform locating hole 11 to install the locating support 23 on the tooling platform 10.

[0033] Figure 1 , Figure 2 , Figure 3 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 , Figure 3 There are multiple positioning supports 23, and the positioning pins 24 sequentially penetrate the top plate positioning holes 231A and the bottom plate positioning holes 232A of the multiple positioning supports 23, as well as the platform positioning holes 11. The multiple positioning supports 23 are installed on the tooling platform 10 by matching the threads at the tails of the positioning pins 24 with the threads on the inner side of the platform positioning holes 11.

[0034] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The end of the top plate limiting section and the part close to the top plate connecting section are provided with top plate fastening holes 231B for fixed connection with the upper positioning plate 22 through fasteners 25; or when there are multiple positioning supports 23 in the positioning assembly 20, in any two adjacent positioning supports 23 among the multiple positioning supports 23, the top plate fastening hole 231B of one positioning support 23 is aligned with the bottom plate fastening hole 232B of another positioning support 23, and the fasteners 25 penetrate the top plate fastening holes 231B and the bottom plate fastening holes 232B in sequence, so as to fix the adjacent positioning supports 23 to each other.

[0035] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The end of the bottom plate limiting section and the part close to the bottom plate connecting section are provided with bottom plate fastening holes 232B for fixed connection with the lower positioning plate 22 through fasteners 25; or when there are multiple positioning supports 23 in the positioning assembly 20, in any two adjacent positioning supports 23 among the multiple positioning supports 23, the bottom plate fastening hole 232B of one positioning support 23 is aligned with the top plate fastening hole 231B of another positioning support 3, and the fasteners 25 penetrate the bottom plate fastening holes 232B and the top plate fastening holes 231B in sequence, so as to fix the adjacent positioning supports 23 to each other.

[0036] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The top plate limit section is provided with a plurality of top plate lugs on both sides along the length direction, and a top plate lug hole 231C is provided inside the top plate lug. The bottom plate limit section is provided with a plurality of bottom plate lugs on both sides along the length direction, and a plurality of bottom plate lug holes 232C are provided inside the bottom plate lug. The top plate lug hole 231C is positioned opposite to the bottom plate lug hole 232C, and the fastener 25 penetrates through the top plate lug hole 231C and the bottom plate lug hole 232C, thereby performing auxiliary fixing connection between the plurality of positioning supports 23.

[0037] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The upper positioning plate 21 includes a corresponding first upper positioning segment and a second upper positioning segment which are arranged in the same plane and are perpendicular to each other in length directions. The lower positioning plate 22 includes a corresponding first lower positioning segment and a second lower positioning segment which are arranged in the same plane and are perpendicular to each other in length directions. The first upper positioning segment, the second upper positioning segment, the first lower positioning segment, and the second lower positioning segment are all used to fit with the outer contour of the counterweight.

[0038] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The portion of the first upper positioning section that abuts against the top plate 231 and the portion of the second upper positioning section that abuts against the top plate 231 are both provided with upper mounting holes 211, and the upper mounting holes 211 correspond to the top plate fastening holes 231B, and are used to pass through the upper mounting holes 211 and the top plate fastening holes 231B in sequence through the fasteners 25, thereby connecting and fixing the upper positioning plate 21 to the top plate 231.

[0039] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 A lower mounting hole 221 is provided in the portion of the first lower positioning section that abuts against the bottom plate 232 and a portion of the second lower positioning section that abuts against the bottom plate 232. The lower mounting hole 221 corresponds to the bottom plate fastening hole 232B and is used to pass the fastener 25 through the lower mounting hole 221 and the bottom plate fastening hole 232B in sequence, thereby connecting and fixing the lower positioning plate 22 to the bottom plate 232.

[0040] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 When there are multiple positioning supports 23 in the positioning assembly 20, the fastener 25 passes through the upper mounting hole 211 and the top plate fastening hole 231B on the top plate 231 of the uppermost positioning support 23 to fix the upper positioning plate 21 to the positioning support 23; the fastener 25 passes through the lower mounting hole 221 and the bottom plate fastening hole 232B on the bottom plate 232 of the lowermost positioning support 23 to fix the lower positioning plate 22 to the positioning support 23.

[0041] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 Preferably, the fastener 25 is a bolt 251 and a nut 252 .

[0042] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The edges of the first upper positioning segment and the second upper positioning segment used to fit with the outer contour of the counterweight are 1-3mm longer than the edges of the first lower positioning segment and the second lower positioning segment used to fit with the outer contour of the counterweight, so as to improve the dimensional accuracy of the counterweight after welding.

[0043] Figure 1 , Figure 2 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 The positioning assembly 20 also includes a clamp 26, which is installed on the upper positioning plate 21. The clamp 26 is used to clamp the side plate of the counterweight when the counterweight is placed on the tooling platform 10, so that the side plate of the counterweight fits against the upper positioning plate 21.

[0044] Figure 1 , Figure 2 , Figure 3 The counterweight positioning fixture is shown in the following example. Figure 1 , Figure 2 , Figure 3 , install the counterweight positioning fixture 100 on the fixture platform 10, and ensure that the counterweight positioning fixture is firmly and reliably fixed on the fixture platform 10. And check the correspondence between the counterweight piece and the counterweight positioning fixture 100. Confirm that the shape and size of the counterweight piece match the shape and size of the upper positioning plate 21 and the lower positioning plate 22 of the counterweight positioning fixture 100 to ensure correct assembly and prevent movement or loosening in subsequent operations. After completing the counterweight assembly, conduct a quality inspection and weld the counterweight piece. Finally, check whether the installation position and fixation of the counterweight piece meet the requirements to ensure the accuracy of the weight, shape and size of the counterweight piece.

[0045] Based on the above specific structure, the counterweight positioning tool 100 provided in the embodiment of the present application can produce many beneficial technical effects compared with the prior art, such as:

[0046] (1) The positioning supports 23 can be stacked in a direction perpendicular to the plane where the tooling platform 10 is located. When there are multiple positioning supports 23 in the positioning assembly 20, the upper positioning plate 21 is detachably mounted on the top plate 231 of the positioning support 23 located at the top, and the lower positioning plate 22 is detachably mounted on the bottom plate 232 of the positioning support 23 located at the bottom, so that the height of the counterweight positioning tool 100 is always consistent with the height of the counterweight part and matches the external contour of the counterweight part, so that the counterweight positioning tool 100 can be adjusted according to the different heights and different shapes of the counterweight part, thereby enabling the counterweight positioning tool 100 to have a precise counterweight adjustment function.

[0047] (2) The counterweight positioning tool 100 has a simple structure, and the operator can quickly get started, which improves the efficiency of counterweight assembly and is easy to maintain. The simple and effective operation process can reduce the learning cost and maintenance cost of the operator.

[0048] (3) The counterweight positioning tool 100 is provided with a stackable positioning support 23, an upper positioning plate 21 detachably mounted on a top plate 231 of the positioning support 23, and a lower positioning plate 22 detachably mounted on a bottom plate 232 of the positioning support 23, which can realize the interchangeability of counterweights with the same external contour. Therefore, the design of the counterweight positioning tool 100 is universal and can be applied to different construction machinery counterweight scenarios. The use cost of the counterweight positioning tool 100 can be reduced, and it has market competitiveness.

[0049] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A counterweight positioning tool, used for positioning the counterweight of an engineering machinery, characterized in that: The counterweight positioning tool comprises: A tooling platform for carrying the counterweight; A plurality of positioning assemblies for limiting the position of the counterweight, the positioning assemblies comprising an upper positioning plate, a lower positioning plate and at least one positioning support disposed between the upper positioning plate and the lower positioning plate; The positioning support includes a top plate, a bottom plate and a support plate connected between the top plate and the bottom plate, the upper positioning plate is detachably mounted on the top plate of the positioning support closest to the upper positioning plate, the lower positioning plate is detachably mounted on the bottom plate of the positioning support closest to the lower positioning plate, both the upper positioning plate and the lower positioning plate are used to cooperate with the outer contour of the counterweight to limit the position of the counterweight, the positioning support located at the bottom is fixed to the tooling platform, and the bottom plate of the positioning support and the tooling platform clamp the lower positioning plate between the bottom plate of the positioning support and the tooling platform.

2. The counterweight positioning tool according to claim 1, characterized in that: The top plate includes a top plate connecting section and two top plate limiting sections respectively connected at both ends of the top plate connecting section, the top plate limiting section and the top plate connecting section are both arranged in the same plane, and the length directions of the two top plate limiting sections are perpendicular to each other; the bottom plate includes a bottom plate connecting section and two bottom plate limiting sections respectively connected at both ends of the bottom plate connecting section, the bottom plate limiting section and the bottom plate connecting section are both arranged in the same plane, and the length directions of the two bottom plate limiting sections are perpendicular to each other.

3. The counterweight positioning tool according to claim 2, characterized in that: A top plate positioning hole is provided at the end of each top plate limiting section, a bottom plate positioning hole is provided at the end of each bottom plate limiting section, the tooling platform is provided with platform positioning holes corresponding to the top plate positioning holes and the bottom plate positioning holes, the positioning assembly also includes a positioning pin, the positioning pin passes through the top plate positioning hole, the bottom plate positioning hole and the platform positioning hole, and the positioning support is installed on the tooling platform.

4. The counterweight positioning tool according to claim 3, characterized in that: There are multiple positioning supports, and the positioning pins sequentially penetrate the top plate positioning holes and the bottom plate positioning holes of the multiple positioning supports, as well as the platform positioning holes, so that the multiple positioning supports are installed on the tooling platform.

5. The counterweight positioning tool according to claim 4, characterized in that: The end of the top plate limiting section and the portion close to the top plate connecting section are both provided with top plate fastening holes, and the end of the bottom plate limiting section and the portion close to the bottom plate connecting section are both provided with bottom plate fastening holes. In any two adjacent positioning supports among the multiple positioning supports, the top plate fastening hole of one positioning support is aligned with the bottom plate fastening hole of another positioning support; the positioning assembly also includes a fastener, which passes through the top plate fastening holes and the bottom plate fastening holes that are aligned with each other in any two adjacent positioning supports to fix the two adjacent positioning supports to each other.

6. The counterweight positioning tool according to claim 5, characterized in that: The upper positioning plate includes a corresponding first upper positioning segment and a second upper positioning segment which are arranged in the same plane and are perpendicular to each other in length directions; the lower positioning plate includes a corresponding first lower positioning segment and a second lower positioning segment which are arranged in the same plane and are perpendicular to each other in length directions; the first upper positioning segment, the second upper positioning segment, the first lower positioning segment, and the second lower positioning segment are all used to engage with the outer contour of the counterweight.

7. The counterweight positioning tool according to claim 6, characterized in that: The portion of the first upper positioning section that abuts against the top plate and the portion of the second upper positioning section that abuts against the top plate are both provided with upper mounting holes, and the upper mounting holes correspond to the fastening holes of the top plate; the portion of the first lower positioning section that abuts against the bottom plate and the portion of the second lower positioning section that abuts against the bottom plate are both provided with lower mounting holes, and the lower mounting holes correspond to the fastening holes of the bottom plate; the fastener also passes through the upper mounting holes and the fastening holes of the top plate to fix the upper positioning plate and the top plate, and passes through the lower mounting holes and the fastening holes of the bottom plate to fix the lower positioning plate and the bottom plate.

8. The counterweight positioning tool according to claim 7, characterized in that: There are multiple positioning supports, and the fastener passes through the upper mounting hole and the top plate fastening hole on the top plate of the uppermost positioning support to fix the upper positioning plate to the positioning support; the fastener passes through the lower mounting hole and the bottom plate fastening hole on the bottom plate of the lowermost positioning support to fix the lower positioning plate to the positioning support.

9. The counterweight positioning tool according to claim 6, characterized in that: The edges of the first upper positioning segment and the second upper positioning segment for engaging with the outer contour of the counterweight are 1-3 mm longer than the edges of the first lower positioning segment and the second lower positioning segment for engaging with the outer contour of the counterweight.

10. The counterweight positioning tool according to claim 1, characterized in that: The positioning assembly also includes a clamp, which is installed on the upper positioning plate and is used to clamp the counterweight when the counterweight is placed on the tooling platform.

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