Point mounting clamp for driven trolley frame of crane

Abstract

The utility model discloses a point mounting fixture for a driven trolley frame of a crane. The point mounting fixture comprises a fixture platform; the clamping assembly is arranged on the clamp platform and is connected with a bottom plate of the driven trolley frame; the first positioning assembly is arranged on the clamp platform and abuts against a left end plate and a middle partition plate of the frame; the second positioning assembly is arranged on the clamp platform and abuts against the right end plate of the frame; the third positioning assembly is arranged on the clamp platform and abuts against the front web of the frame; the fourth positioning assembly and the third positioning assembly are symmetrically arranged, and the fourth positioning assembly abuts against the frame rear web; and the fifth positioning assembly is arranged on the third positioning assembly and abuts against the top plate of the frame. Compared with the prior art, the technical scheme disclosed by the utility model has the advantages that the manual marking time can be saved, the spot mounting efficiency and precision are improved, the spot mounting quality of the frame is improved, and the subsequent automatic welding of the frame is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of crane machinery manufacturing equipment, and more specifically, to a point-mounting fixture for a crane driven trolley frame. Background Technology

[0002] The driven trolley frame is an important component of a crane. It generally refers to the non-driving part installed in the crane's traveling mechanism; simply put, it is the frame that houses the crane's running mechanism. The driven trolley frame plays a crucial role in a crane, not only providing stable support and guidance to ensure smooth operation, but also enabling precise movement and positioning of the crane through its cooperation with the drive trolley.

[0003] Currently, in existing technologies, the driven carriage frame is typically welded from steel plates and profiles, such as... Figure 3 As shown, the driven trolley frame is typically welded into a box-shaped structure with openings at both ends. Traditional welding methods usually involve manual marking and correction followed by spot welding. The spot welding sequence is: bottom plate—right end plate—front and rear web plates—middle partition plate—left end plate—top plate. After spot welding, a welding robot performs full welding, thus requiring high precision in the spot welding process. However, due to the low precision and poor quality consistency of manual spot welding, it is not conducive to subsequent automated welding, directly leading to a reduction in the overall production efficiency of the driven trolley frame and failing to meet the production needs of existing driven trolley frames.

[0004] Therefore, how to provide a spot-fitting fixture for a crane driven trolley frame that can save manual marking time, improve spot-fitting efficiency and accuracy, enhance the spot-fitting quality of the frame, and facilitate subsequent automated welding of the frame has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a spot-fitting fixture for a crane driven trolley frame, which can save manual marking time, improve spot-fitting efficiency and accuracy, enhance the spot-fitting quality of the frame, and facilitate subsequent automated welding of the frame.

[0006] The technical solution provided by this utility model is as follows:

[0007] This utility model provides a spot-mounting fixture for a crane driven trolley frame, comprising: a fixture platform; a clamping assembly disposed on the fixture platform and connected to the base plate of the driven trolley frame; a first positioning assembly disposed on the fixture platform and abutting against the left end plate and the middle partition plate of the frame; a second positioning assembly disposed on the fixture platform and abutting against the right end plate of the frame; a third positioning assembly disposed on the fixture platform and abutting against the front web plate of the frame; a fourth positioning assembly symmetrically disposed with respect to the third positioning assembly and abutting against the rear web plate of the frame; and a fifth positioning assembly disposed on the third positioning assembly and abutting against the top plate of the frame.

[0008] Furthermore, in a preferred embodiment of this utility model, the clamping assembly includes:

[0009] Pressure plate installed on the chassis floor;

[0010] A clamping screw that passes through the pressure plate and is connected to the fixture platform;

[0011] A clamping nut fitted onto the clamping screw.

[0012] Furthermore, in a preferred embodiment of this utility model, the first positioning assembly includes:

[0013] A first positioning support is provided on the fixture platform;

[0014] The first positioning mechanism is installed on the first positioning support.

[0015] Furthermore, in a preferred embodiment of this utility model, the first positioning mechanism includes:

[0016] A horizontal bracket is installed on the right side wall of the first positioning support.

[0017] The first positioning block is disposed at the end of the horizontal support and abuts against the middle partition of the vehicle frame;

[0018] One end is connected to the horizontal bracket, and the other end abuts against the second positioning block of the vehicle frame bottom plate;

[0019] The side wall of the second positioning block abuts against the left end plate of the vehicle frame.

[0020] Furthermore, in a preferred embodiment of this utility model, the second positioning assembly includes:

[0021] A second positioning support is disposed on the clamping platform and abuts against the right end plate of the frame;

[0022] The third positioning block is disposed on the side wall of the second positioning support.

[0023] Furthermore, in a preferred embodiment of this utility model, the third positioning assembly includes:

[0024] A third positioning support is provided on the fixture platform;

[0025] The first mounting plate is disposed on the third positioning support;

[0026] The first positioning screw is disposed on the first mounting plate;

[0027] A first positioning nut is disposed at one end of the first positioning screw and abuts against the first mounting plate;

[0028] The fourth positioning block is located at the other end of the first positioning screw and abuts against the front web of the vehicle frame.

[0029] Furthermore, in a preferred embodiment of this utility model, the third positioning support includes:

[0030] A mounting base plate is disposed on the fixture platform;

[0031] The first support side plate is disposed on the mounting base plate;

[0032] The fifth positioning block is disposed on the side wall of the first support side plate and abuts against the front web plate of the frame.

[0033] A second support side plate is disposed on the mounting base plate and is arranged parallel to the first support side plate;

[0034] The sixth positioning block is located on the side wall of the second support side plate and abuts against the front web plate of the frame.

[0035] A first reinforcing rib is disposed between the first support side plate and the second support side plate.

[0036] Furthermore, in a preferred embodiment of this utility model, the fifth positioning assembly includes:

[0037] A fourth positioning support is provided on the third positioning support;

[0038] The seventh positioning block is set on the fourth positioning support and abuts against the top plate of the vehicle frame.

[0039] Furthermore, in a preferred embodiment of this utility model, the fourth positioning assembly includes:

[0040] The fifth positioning support is provided on the fixture platform;

[0041] A pin mechanism is provided on the fifth positioning support;

[0042] Rotary support movably connected to the pin mechanism;

[0043] A pressure plate locking mechanism is provided on the rotating support and is detachably connected to the fifth positioning support;

[0044] A second mounting plate is disposed on the rotating support;

[0045] The second positioning screw is disposed on the second mounting plate;

[0046] The second positioning nut is disposed at one end of the second positioning screw and abuts against the second mounting plate;

[0047] The eighth positioning block is located at the other end of the second positioning screw and abuts against the rear web of the vehicle frame.

[0048] Furthermore, in a preferred embodiment of this utility model, the rotating support includes:

[0049] The third support side plate is disposed at one end of the pin mechanism;

[0050] The ninth positioning block is disposed on the side wall of the third support side plate and abuts against the rear web plate of the frame.

[0051] The fourth support side plate is located at the other end of the pin mechanism;

[0052] The tenth positioning block is disposed on the side wall of the fourth support side plate and abuts against the rear web plate of the frame.

[0053] The second reinforcing rib is disposed between the third and fourth support side plates.

[0054] This utility model provides a spot-mounting fixture for a crane driven trolley frame, comprising: a fixture platform; a clamping assembly disposed on the fixture platform and connected to the base plate of the driven trolley frame; a first positioning assembly disposed on the fixture platform and abutting against the left end plate and the middle partition plate of the frame; a second positioning assembly disposed on the fixture platform and abutting against the right end plate of the frame; a third positioning assembly disposed on the fixture platform and abutting against the front web plate of the frame; a fourth positioning assembly symmetrically disposed with respect to the third positioning assembly and abutting against the rear web plate of the frame; and a fifth positioning assembly disposed on the third positioning assembly and abutting against the top plate of the frame. The crane driven trolley frame assembly fixture disclosed in this utility model is used to conveniently perform assembly operations by placing the driven trolley frame to be welded on the assembly fixture. The driven trolley frame is formed by welding a base plate, a left end plate, a right end plate, a front web plate, a rear web plate, and a top plate. The main structure of the crane driven trolley frame assembly fixture consists of a fixture platform, a clamping assembly, a first positioning assembly, a second positioning assembly, a third positioning assembly, a fourth positioning assembly, and a fifth positioning assembly. The fixture platform is located below the base plate and is used to support the entire driven trolley frame and to install and fix each positioning assembly and the clamping assembly. The clamping assembly, the first positioning assembly, the second positioning assembly, the third positioning assembly, and the fourth positioning assembly are mounted on the fixture platform. The clamping assembly is connected to the base plate and is used to fix the base plate on the fixture platform, restricting the vertical movement of the base plate. The first positioning assembly... The first, second, third, and fourth positioning assemblies are arranged around the driven platform frame. The first positioning assembly is installed on the left side of the left end plate, abutting against the left end plate and the middle partition plate to restrict the left and right movement of the left end plate and the middle partition plate. The second positioning assembly is installed on the right side of the right end plate, abutting against the right end plate to restrict the left and right movement and the forward and backward movement of the right end plate. The third and fourth positioning assemblies are respectively installed on the front side of the front web plate and the rear side of the rear web plate. The third positioning assembly abuts against the bottom plate and the front web plate to restrict the forward and backward movement of the bottom plate and the front web plate. The fourth positioning assembly abuts against the rear web plate to restrict the forward and backward movement of the rear web plate. Furthermore, the fifth positioning assembly is installed on the third positioning assembly, abutting against the top plate to restrict the forward and backward movement and the left and right movement of the top plate. In summary, the technical solution provided by this utility model, compared with the prior art, can save manual marking time, improve the efficiency and accuracy of spot assembly, enhance the spot assembly quality of the frame, and facilitate subsequent automated welding of the frame. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] Figure 1 A three-dimensional structural diagram of the point-mounting fixture for the crane driven trolley frame provided in this embodiment of the utility model. Figure 1 ;

[0057] Figure 2 A three-dimensional structural diagram of the point-mounting fixture for the crane driven trolley frame provided in this embodiment of the utility model. Figure 2 ;

[0058] Figure 3 This is a schematic diagram of the structure of the driven trolley frame provided in an embodiment of the present utility model;

[0059] Figure 4 This is a front view of the spot-mounting fixture for the crane driven trolley frame provided in an embodiment of the present utility model;

[0060] Figure 5 A top view of the spot-mounting fixture for the crane driven trolley frame provided in an embodiment of this utility model;

[0061] Figure 6 A left view of the spot-mounting fixture for the crane driven trolley frame provided in this embodiment of the utility model;

[0062] Figure 7 This is a schematic diagram of the structure of the first positioning assembly provided in an embodiment of the present utility model;

[0063] Figure 8 This is a schematic diagram of the structure of the second positioning assembly provided in an embodiment of the present utility model;

[0064] Figure 9 A schematic diagram of the structure of the third positioning assembly provided in this embodiment of the present utility model;

[0065] Figure 10 A schematic diagram of the structure of the third positioning support provided in this embodiment of the utility model;

[0066] Figure 11 A schematic diagram of the structure of the fifth positioning assembly provided in this embodiment of the present utility model;

[0067] Figure 12 A schematic diagram of the structure of the fourth positioning assembly provided in this embodiment of the present utility model;

[0068] Figure 13 This is a top view of the fourth positioning assembly provided in an embodiment of the present utility model. Detailed Implementation

[0069] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0070] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0071] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "first", "second", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0073] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0074] like Figures 1 to 13As shown, the point-mounting fixture for the crane driven trolley frame provided in this embodiment of the utility model includes: a fixture platform 1, a clamping assembly 2, a first positioning assembly 3, a second positioning assembly 4, a third positioning assembly 5, a fourth positioning assembly 6, and a fifth positioning assembly 7.

[0075] This utility model provides a spot-fitting fixture for a crane driven trolley frame, specifically comprising: a fixture platform 1; a clamping assembly 2 disposed on the fixture platform 1 and connected to the bottom plate of the driven trolley frame 8; a first positioning assembly 3 disposed on the fixture platform 1 and abutting against the left end plate and the middle partition plate of the frame; a second positioning assembly 4 disposed on the fixture platform 1 and abutting against the right end plate of the frame; a third positioning assembly 5 disposed on the fixture platform 1 and abutting against the front web plate of the frame; a fourth positioning assembly 6 symmetrically disposed to the third positioning assembly 5 and abutting against the rear web plate of the frame; and a fifth positioning assembly 7 disposed on the third positioning assembly 5 and abutting against the top plate of the frame. Compared with the prior art, the technical solution provided by this utility model can save manual marking time, improve the efficiency and accuracy of spot-fitting, enhance the spot-fitting quality of the frame, and facilitate subsequent automated welding of the frame.

[0076] The technical solution of this utility model will be specifically described below with reference to the embodiments:

[0077] Specifically, in an embodiment of this utility model, the clamping assembly 2 includes: a pressure plate 201 disposed on the chassis base plate; a clamping screw 202 passing through the pressure plate 201 and connected to the clamping platform 1; and a clamping nut sleeved on the clamping screw 202.

[0078] like Figure 2 As shown in this embodiment of the utility model, the clamping assembly 2 consists of four parts, which are respectively located at the four corners of the base plate of the driven trolley frame 8, for fixing the base plate to the fixture platform 1. The main structure of the clamping assembly 2 consists of the pressure plate 201, the clamping screw 202, and the clamping nut. The pressure plate 201 is mounted on the base plate, and the base plate is provided with a screw hole. The clamping screw 202 passes through the pressure plate 201 and the screw hole and is connected to the fixture platform 1. Then, the clamping nut is used to lock the clamping screw 202, so that the base plate can be fixed on the fixture platform 1 and the up and down movement of the base plate is restricted.

[0079] Specifically, in an embodiment of this utility model, the first positioning assembly 3 includes: a first positioning support 301 disposed on the clamping platform 1; and a first positioning mechanism 302 disposed on the first positioning support 301.

[0080] like Figure 7As shown in this embodiment of the present invention, the first positioning assembly 3 is installed on the left side of the driven platform frame 8, and abuts against the left end plate and the middle partition plate of the frame; wherein, the first positioning assembly 3 is composed of the first positioning support 301 and the first positioning mechanism 302. The first positioning support 301 is fixedly installed on the clamping platform 1 by threaded fasteners. The main structure of the first positioning support 301 includes a base plate, a vertical plate and a reinforcing rib plate. The first positioning mechanism 302 is arranged perpendicularly to the vertical plate. The end of the first positioning mechanism 302 abuts against the base plate of the frame and the left end plate to limit the point mounting position of the two.

[0081] Specifically, in an embodiment of this utility model, the first positioning mechanism 302 includes: a horizontal support 9 disposed on the right side wall of the first positioning support 301; a first positioning block 10 disposed at the end of the horizontal support 9 and abutting against the middle partition of the frame; a second positioning block 11 connected at one end to the horizontal support 9 and abutting against the bottom plate of the frame at the other end; the side wall of the second positioning block 11 abutting against the left end plate of the frame.

[0082] like Figure 7 As shown in this embodiment of the present invention, the first positioning mechanism 302 is composed of the horizontal support 9, the first positioning block 10, and the second positioning block 11. The horizontal support 9 includes two horizontally arranged crossbars and a reinforcing rod disposed between the crossbars. Two first positioning blocks 10 are provided, respectively installed at the ends of the two crossbars. The first positioning block 10 abuts against the side wall of the middle partition of the frame to limit the position of the middle partition of the frame. Next, the second positioning block 11 is installed below the two crossbars. The second positioning block 11 is a rod-shaped structure. The bottom end of the second positioning block 11 abuts against the bottom plate of the frame, and the left side wall of the second positioning block 11 abuts against the left end plate of the frame. The second positioning block 11 can limit the point mounting position of the left end plate of the frame.

[0083] Specifically, in an embodiment of this utility model, the second positioning assembly 4 includes: a second positioning support 401 disposed on the clamping platform 1 and abutting against the right end plate of the frame; and a third positioning block 403 disposed on the side wall of the second positioning support 401.

[0084] like Figure 8As shown in this embodiment of the present invention, the second positioning assembly 4 is disposed on the right side of the driven platform frame 8. The second positioning assembly 4 consists of two parts, which are arranged side by side. In this embodiment, the second positioning assembly 4 is composed of the second positioning support 401 and the third positioning block 403. Specifically, the second positioning support 401 is an L-shaped support, which is fixedly installed on the clamping platform 1 by threaded fasteners. The side wall of the L-shaped support abuts against the right end plate of the frame to restrict the left and right movement of the right end plate of the frame. The third positioning block 403 is disposed on the side wall of the L-shaped support, and the third positioning block 403 abuts against the front and rear side walls of the right end plate of the frame to restrict the front and rear movement of the right end plate of the frame.

[0085] Specifically, in an embodiment of this utility model, the third positioning assembly 5 includes: a third positioning support 501 disposed on the clamping platform 1; a first mounting plate 502 disposed on the third positioning support 501; a first positioning screw 503 disposed on the first mounting plate 502; a first positioning nut 504 disposed at one end of the first positioning screw 503 and abutting against the first mounting plate 502; and a fourth positioning block 505 disposed at the other end of the first positioning screw 503 and abutting against the front web of the vehicle frame.

[0086] like Figure 9 As shown, the third positioning assembly 5 consists of two parts, which are mirror images of each other. In this embodiment, the main structure of the third positioning assembly 5 comprises the third positioning support 501, the first mounting plate 502, the first positioning screw 503, the first positioning nut 504, and the fourth positioning block 505. The third positioning support 501 is also fixed to the clamping platform 1 by threaded fasteners. The third positioning support 501 abuts against the chassis bottom plate and the chassis front web plate. The first mounting plate 502 is horizontally mounted on the third positioning support 501. The first positioning screw 503 and the first positioning nut 504 are connected to the third positioning support 505. Four positioning blocks 505 are combined to form a first clamping fastener. The first mounting plate 502 is used to install the first clamping fastener. The first clamping fastener is configured as a hook structure for easy disassembly. In the first clamping fastener, the first positioning screw 503 passes through the first mounting plate 502. The first positioning nut 504 and the fourth positioning block 505 are respectively provided at both ends of the first positioning screw 503. The fourth positioning block 505 is engaged with the front web plate of the frame. The first positioning nut 504 is specifically a wing nut. The first positioning screw 503 is fastened by the wing nut, so that the first clamping fastener can restrict the position of the front web plate of the frame.

[0087] Specifically, in an embodiment of this utility model, the third positioning support 501 includes: a mounting base plate 12 disposed on the clamping platform 1; a first supporting side plate 13 disposed on the mounting base plate 12; a fifth positioning block 14 disposed on the side wall of the first supporting side plate 13 and abutting against the front web of the frame; a second supporting side plate 15 disposed on the mounting base plate 12 and disposed parallel to the first supporting side plate 13; a sixth positioning block 16 disposed on the side wall of the second supporting side plate 15 and abutting against the front web of the frame; and a first reinforcing rib plate 17 disposed between the first supporting side plate 13 and the second supporting side plate 15.

[0088] like Figure 10 As shown in the embodiment of this utility model, the third positioning support 501 is used to abut against the chassis bottom plate and the chassis front web plate; wherein, the third positioning support 501 is composed of the mounting base plate 12, the first supporting side plate 13, the fifth positioning block 14, the second supporting side plate 15, the sixth positioning block 16, and the first reinforcing rib plate 17; the mounting base plate 12 is disposed on the clamping platform 1, the first supporting side plate 13 and the second supporting side plate 15 are perpendicularly disposed on the mounting base plate 12, and the first reinforcing rib plate 17 is disposed between the first supporting side plate 13 and the second supporting side plate 15, the first reinforcing rib plate 17 is used to enhance the structural strength of the support; at the ends of the first supporting side plate 13 and the second supporting side plate 15, the fifth positioning block 14 and the sixth positioning block 16 are respectively disposed, the fifth positioning block 14 and the sixth positioning block 16 abut against the chassis front web plate, and are used to limit the position of the chassis front web plate.

[0089] Specifically, in an embodiment of this utility model, the fifth positioning assembly 7 includes: a fourth positioning support 701 disposed on the third positioning support 501; and a seventh positioning block 702 disposed on the fourth positioning support 701 and abutting against the top plate of the vehicle frame.

[0090] like Figure 11 In this embodiment of the present invention, the fifth positioning assembly 7 is used to limit the point mounting position of the vehicle frame top plate; wherein the fifth positioning assembly 7 is composed of the fourth positioning support 701 and the seventh positioning block 702; in this embodiment, the seventh positioning block 702 is specifically an L-shaped positioning block, the seventh positioning block 702 is disposed at the right angle of the vehicle frame top plate, and is engaged with the vehicle frame top plate, which can limit the left and right movement and the front and back movement of the vehicle frame top plate.

[0091] Specifically, in an embodiment of this utility model, the fourth positioning assembly 6 includes: a fifth positioning support 601 disposed on the clamping platform 1; a pin mechanism 602 disposed on the fifth positioning support 601; a rotating support 603 movably connected to the pin mechanism 602; a pressure plate locking mechanism 604 disposed on the rotating support 603 and detachably connected to the fifth positioning support 601; a second mounting plate 605 disposed on the rotating support 603; a second positioning screw 606 disposed on the second mounting plate 605; a second positioning nut 607 disposed at one end of the second positioning screw 606 and abutting against the second mounting plate 605; and an eighth positioning block 608 disposed at the other end of the second positioning screw 606 and abutting against the rear web of the frame.

[0092] like Figure 12 , 13 As shown, the fourth positioning assembly 6 consists of two parts, which are mirror images of each other. In this embodiment, the main structure of the fourth positioning assembly 6 comprises the fifth positioning support 601, the pin mechanism 602, the rotating support 603, the pressure plate locking mechanism 604, the second mounting plate 605, the second positioning screw 606, the second positioning nut 607, and the eighth positioning block 608. Similarly, the fifth positioning support 601 is fixed to the fixture platform 1 by threaded fasteners. The pin mechanism 602 is installed on the fifth positioning support 601. The rotating support 603 is disposed on the pin mechanism 602 and can rotate relative to the pin mechanism 602. After rotating to the correct position, the rotating support 603 can abut against... The second positioning screw 606 and the eighth positioning block 608 are combined to form a second clamping fastener. The first clamping fastener and the second clamping fastener have the same structure. The second mounting plate 605 is used to install the second clamping fastener. In the second clamping fastener, the second positioning screw 606 passes through the second mounting plate 605. The second positioning nut 607 and the eighth positioning block 608 are respectively provided at both ends of the second positioning screw 606. The eighth positioning block 608 is engaged with the rear web of the frame. The second positioning nut 607 is also a wing nut. The second positioning screw 606 is fastened by the wing nut, so that the second clamping fastener can restrict the position of the rear web of the frame.

[0093] Specifically, in an embodiment of this utility model, the rotating support 603 includes: a third support side plate 18 disposed at one end of the pin mechanism 602; a ninth positioning block 19 disposed on the side wall of the third support side plate 18 and abutting against the rear web of the frame; a fourth support side plate 20 disposed at the other end of the pin mechanism 602; a tenth positioning block 21 disposed on the side wall of the fourth support side plate 20 and abutting against the rear web of the frame; and a second reinforcing rib plate 22 disposed between the third support side plate 18 and the fourth support side plate 20.

[0094] Specifically, in the embodiments of this utility model, the method of using the spot welding fixture is as follows: First, place the chassis base plate 801 on the fixture platform 1, with the right side close to the second positioning assembly 4 and the front side close to the third positioning assembly 5, and clamp it using the clamping assembly 2; then, place the bottom of the chassis right end plate 803 close to the chassis base plate 801, with the right side and front side close to the second positioning assembly 4, and clamp it for spot welding; then, place the bottom of the chassis front web plate 804 close to the base plate 801, with the right side close to the right end plate 803, and the front side close to the third positioning assembly 5, and clamp it using the first positioning screw 503 and the first positioning nut 504, and then spot weld it; next, rotate the rotating support 603 clockwise, and after rotating it to the correct position, use the pressure... The plate locking mechanism 604 presses the fifth positioning support 601, bringing the bottom of the rear web plate 805 of the frame close to the base plate 801, and the rear side close to the fourth positioning assembly 6. Then, it is clamped with the second positioning screw 606 and the second positioning nut 607 and spot welded. Next, the bottom of the middle partition plate 807 of the frame is close to the base plate 801, the front side is close to the front web plate 804, and the left side is close to the first positioning assembly 3, and then it is clamped and spot welded. Then, the bottom of the left end plate 802 of the frame is close to the base plate 801, the front side is close to the front web plate 804, and the right side is close to the first positioning assembly 3, and then it is clamped and spot welded. Finally, the bottom of the top plate 806 of the frame is close to the front and rear web plates 805, and the left and front sides are close to the fifth positioning assembly 7, and then it is clamped and spot welded. After the driven carriage frame 8 is assembled, first remove the first positioning assembly 3 and clamping assembly 2, then rotate the first and second positioning nuts 607 to loosen the first and second positioning screws 606, finally loosen the pressure plate locking mechanism 604, and rotate the rotating support 603 counterclockwise to remove the driven carriage frame 8 from the assembly fixture.

[0095] As described above, this utility model addresses the problem of manual marking and welding of existing driven trolley frames by proposing a spot-fitting fixture that eliminates the need for manual marking and correction during the spot-fitting of the driven trolley frame. For the spot-fitting fixture for the crane driven trolley frame disclosed in this utility model, the driven trolley frame 8 to be welded is placed on the spot-fitting fixture for convenient spot-fitting operations. The driven trolley frame 8 is formed by welding together a base plate 801, a left end plate 802, a right end plate 803, a front web plate 804, a rear web plate 805, and a top plate 806. The main structure of the spot-fitting fixture for the crane driven trolley frame consists of a fixture platform 1, a clamping assembly 2, a first positioning assembly 3, a second positioning assembly 4, a third positioning assembly 5, a fourth positioning assembly 6, and... The fifth positioning assembly 7 is composed of the following: the clamping platform 1 is disposed below the base plate, used to support the entire driven carriage frame 8, and to install and fix each positioning assembly and the clamping assembly 2. The clamping assembly 2, the first positioning assembly 3, the second positioning assembly 4, the third positioning assembly 5, and the fourth positioning assembly 6 are mounted on the clamping platform 1. The clamping assembly 2 is connected to the base plate and is used to fix the base plate on the clamping platform 1, restricting the vertical movement of the base plate. The first positioning assembly 3, the second positioning assembly 4, and the fourth positioning assembly 6 are also mounted on the clamping platform 1. The third positioning assembly 5 and the fourth positioning assembly 6 are arranged around the driven platform frame 8. The first positioning assembly 3 is mounted on the left side of the left end plate, abutting against the left end plate and the middle partition plate 807 to restrict the left and right movement of the left end plate and the middle partition plate 807. The second positioning assembly 4 is mounted on the right side of the right end plate 803, abutting against the right end plate 803 to restrict its left and right and forward and backward movement. The third positioning assembly 5 and the fourth positioning assembly 6... Positioning assemblies 6 are respectively installed on the front side of the front web plate 804 and the rear side of the rear web plate 805. The third positioning assembly 5 abuts against the bottom plate 801 and the front web plate 804 to restrict the back-and-forth movement of the bottom plate 801 and the front web plate 804. The fourth positioning assembly 6 abuts against the rear web plate 805 to restrict the back-and-forth movement of the rear web plate 805. Furthermore, the fifth positioning assembly 7 is installed on the third positioning assembly 5. The fifth positioning assembly 7 abuts against the top plate 806 to restrict the back-and-forth and left-and-right movement of the top plate 806. In summary, the technical solution provided by this utility model, compared with the prior art, can save manual marking time, improve the efficiency and accuracy of spot assembly, improve the spot assembly quality of the frame, and facilitate the subsequent automated welding of the frame.

[0096] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A point clamping fixture for a crane driven trolley frame, characterised in that, The utility model relates to a fixture platform, a clamping assembly connected with the driven trolley frame bottom plate, a first positioning assembly abutting with the left end plate and the middle partition plate of the frame, a second positioning assembly abutting with the right end plate of the frame, a third positioning assembly abutting with the front web plate of the frame, a fourth positioning assembly abutting with the rear web plate of the frame, and a fifth positioning assembly abutting with the top plate of the frame. The clamping assembly comprises a pressing plate arranged on the frame bottom plate, a clamping screw penetrating through the pressing plate and connected with the fixture platform, and a clamping nut sleeved on the clamping screw. The first positioning assembly comprises a first positioning support arranged on the fixture platform and a first positioning mechanism arranged on the first positioning support. The first positioning mechanism comprises a horizontal support arranged on the right end side wall of the first positioning support, a first positioning block arranged on the end of the horizontal support and abutting with the middle partition plate of the frame, a second positioning block having one end connected with the horizontal support and the other end abutting with the frame bottom plate, and a side wall of the second positioning block abutting with the left end plate of the frame. The second positioning assembly comprises a second positioning support arranged on the fixture platform and abutting with the right end plate of the frame, and a third positioning block arranged on the side wall of the second positioning support. The third positioning assembly comprises a third positioning support arranged on the fixture platform, a first mounting plate arranged on the third positioning support, a first positioning screw arranged on the first mounting plate, a first positioning nut arranged on one end of the first positioning screw and abutting with the first mounting plate, and a fourth positioning block arranged on the other end of the first positioning screw and abutting with the front web plate of the frame. The third positioning support comprises a mounting bottom plate arranged on the fixture platform, a first support side plate arranged on the mounting bottom plate, a fifth positioning block arranged on the side wall of the first support side plate and abutting with the front web plate of the frame, a second support side plate arranged on the mounting bottom plate and parallel to the first support side plate, a sixth positioning block arranged on the side wall of the second support side plate and abutting with the front web plate of the frame, and a first reinforcing rib plate arranged between the first support side plate and the second support side plate. The fifth positioning assembly comprises a fourth positioning support arranged on the third positioning support, and a seventh positioning block arranged on the fourth positioning support and abutting with the top plate of the frame.

2. A point clamping fixture for a crane driven trolley frame according to claim 1, characterised in that, The fourth positioning assembly comprises a fifth positioning support arranged on the fixture platform, a pin shaft mechanism arranged on the fifth positioning support, a rotating support movably connected with the pin shaft mechanism, a pressing plate locking mechanism arranged on the rotating support and detachably connected with the fifth positioning support, a second mounting plate arranged on the rotating support, a second positioning screw arranged on the second mounting plate, a second positioning nut arranged on one end of the second positioning screw and abutting with the second mounting plate, and an eighth positioning block arranged on the other end of the second positioning screw and abutting with the rear web plate of the frame. ​ ​ ​ 3. The point clamping fixture for a crane driven trolley frame of claim 1, wherein, ​ ​ ​ 4. A point clamping fixture for a crane driven trolley frame according to claim 3, characterised in that, ​ ​ ​ ​ ​ 5. The point clamping fixture for a crane driven trolley frame of claim 1 wherein, ​ ​ ​ 6. The point clamping fixture for a crane driven trolley frame of claim 1 wherein, ​ ​ ​ ​ ​ ​ 7. A point clamping fixture for a crane driven trolley frame according to claim 6, characterised in that, ​ ​ ​ ​ ​ ​ ​ 8. A point clamping fixture for a crane driven trolley frame according to claim 7, characterised in that, ​ ​ ​ 9. The point clamping fixture for a crane driven trolley frame of claim 1 wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ 10. A point clamping fixture for a crane driven trolley frame according to claim 9, characterised in that, The rotating support comprises: a third support side plate arranged at one end of the pin shaft mechanism; a ninth positioning block arranged on the side wall of the third support side plate and abutting against the rear web plate of the vehicle frame; a fourth support side plate arranged at the other end of the pin shaft mechanism; a tenth positioning block arranged on the side wall of the fourth support side plate and abutting against the rear web plate of the vehicle frame; a second reinforcing rib plate arranged between the third support side plate and the fourth support side plate.

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