Plate spring end cover mounting tool

Abstract

The utility model provides a plate spring end cover installation tool which comprises an installation frame, universal wheels distributed in a rectangular array mode are arranged at the bottom of the installation frame, a limiting supporting assembly is arranged at the top of the installation frame, and a lifting assembly is arranged in the middle of the installation frame. According to the utility model, the position of a heavier plate spring cover is fixed by arranging the limiting and supporting assembly, and the relative position of the plate spring cover and a U-shaped bolt on a plate spring is adjusted by pushing the mounting frame and utilizing the universal wheels, so that the alignment of the plate spring cover is more accurate and convenient, the manpower is saved, and the assembly efficiency is improved; by arranging the lifting assembly, after positioning is accurate, a first lead screw is controlled to move up and down through a first lead screw lifting machine in a motor driving or rocker driving mode, the supporting base is pushed to move upwards or controlled to descend, the precision is guaranteed, meanwhile, the labor intensity of workers is lowered, the production safety is guaranteed, and the working efficiency and the production quality are further improved.

Description

Technical Field

[0001] This utility model relates to a leaf spring end cap installation fixture, belonging to the field of engineering machinery technology. Background Technology

[0002] The leaf spring is a core elastic element in a vehicle's suspension system, composed of multiple stacked spring steel plates of varying lengths. Its primary functions include load transfer, vibration damping, and attitude adjustment between the vehicle body and wheels. In heavy-duty trucks and engineering vehicles, a leaf spring cover (also called a leaf spring pressure plate) is typically installed on top of the leaf spring assembly to improve its overall load-bearing capacity and deformation resistance. This cover is fixed to the axle with two sets of U-bolts, forming a rigid constraint on the leaf spring assembly. As a load-bearing component, the leaf spring cover must possess high strength and high wear resistance; therefore, it is generally made of cast iron or alloy steel as a single piece. Its weight can range from 15 to 50 kg depending on the vehicle model, and strict dimensional accuracy is required: the distance error between the bolt holes on both sides must be controlled within ±1 mm, and the vertical alignment deviation with the U-bolts must be less than 2°. This structural characteristic necessitates overcoming the component's own weight load during installation while achieving millimeter-level positioning accuracy.

[0003] Currently, the industry generally uses manual installation, where 2-3 operators work together to move the leaf spring cover to the axle mounting position; one worker uses a pry bar to adjust the horizontal position of the leaf spring cover, while another worker visually compares the position of the U-bolts; after initial positioning, a third worker uses a hydraulic wrench to pre-tighten the nuts, and the offset needs to be repeatedly corrected during the process.

[0004] In the existing technology, the labor intensity of workers installing leaf spring covers is high, positioning is difficult, assembly accuracy is not high, and there are significant safety hazards. Therefore, a tooling that can assist in the installation of leaf spring covers is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] Purpose of the invention: In view of the shortcomings of the prior art, this utility model provides a leaf spring end cap mounting fixture to solve the technical problems mentioned in the background art.

[0006] Technical solution: A leaf spring end cap mounting fixture includes a mounting frame. The bottom of the mounting frame is provided with casters arranged in a rectangular array. The top of the mounting frame is provided with a limiting support assembly. The limiting support assembly includes a set of leaf spring end cap limiting blocks and a support seat arranged opposite each other. The leaf spring end cap limiting blocks are detachably installed at both ends of the upper side of the support seat. The middle of the mounting frame is provided with a lifting assembly. The lifting assembly includes a first screw jack fixedly connected to the mounting frame through a mounting plate and a first screw that passes through the first screw jack and controls its up and down movement through the first screw jack. The top of the first screw passes through the mounting frame and is fixedly connected to the support plate.

[0007] This invention uses a limiting support assembly to fix the position of the heavy leaf spring cover. Then, by pushing the mounting bracket and using casters to adjust the relative position with the U-bolt on the leaf spring, the alignment of the leaf spring cover is more precise and convenient, saving manpower and improving assembly efficiency. Furthermore, by incorporating a lifting assembly, after accurate positioning, a first lead screw is controlled to move up and down via a motor-driven or rocker-driven first lead screw jack, pushing the support seat upwards or controlling its descent. This ensures accuracy while reducing manual labor intensity, guaranteeing production safety, and further improving work efficiency and production quality.

[0008] It also includes at least one guide post that is fixedly connected to the support plate through the upper side of the mounting frame, and a guide cylinder is provided on the bottom surface of the upper side of the mounting frame, and the guide post is slidably installed in the guide cylinder.

[0009] To improve installation accuracy and prevent changes in positioning accuracy caused by the rotation of the support seat during the first lead screw's ascent, a guide cylinder and a guide post penetrating the guide cylinder are installed to keep the position unchanged during the first lead screw's ascent of the support seat, thus guiding the overall movement process.

[0010] The support base is provided with detachable baffles on both the front and rear sides. The baffles are provided with support slopes at both ends that are adapted to the shape of the leaf spring cover. The stiffeners of the leaf spring cover are embedded between the baffles on both sides.

[0011] By setting baffles and supporting slopes on the upper edge of the baffles to adapt to the bottom shape of the leaf spring cover, the contact area is increased, making the support more stable. Baffles on both sides restrict the stiffeners of the leaf spring cover to a predetermined position, improving the installation stability of the leaf spring cover. After the leaf spring cover is supported by the baffles, there is reserved assembly space below, which makes it easier for assembly personnel to install the nuts of the U-bolts, further improving assembly efficiency.

[0012] The leaf spring cover limiting block is configured with an arc surface on the side near the leaf spring cover, which is adapted to the leaf spring cover. An outwardly expanding guide slope is provided on the upper edge of the arc surface.

[0013] To facilitate the installation of the leaf spring cover in the limiting support assembly and improve the limiting effect, an appropriate arc surface structure is set to increase the contact area with the leaf spring cover. A guide slope is set to guide the installation process so that the leaf spring cover is accurately installed between the predetermined leaf spring cover limiting blocks.

[0014] The mounting bracket has symmetrically positioned long slots on its left and right sides. A positioning rod is installed through the long slot. The positioning rod is fixed in position in the long slot by bolts at the bottom. At least one of the positioning rods is fitted with a leaf spring positioning block. After positioning, the leaf spring positioning block contacts the side of the leaf spring.

[0015] To achieve precise positioning for the overall installation, and because leaf springs of different specifications have different widths, the positioning rod in the long slot can be adjusted to match the positioning of leaf springs of different models and specifications. This allows the leaf spring positioning baffle to contact the side of the leaf spring, thus positioning the leaf spring. This provides auxiliary positioning during installation, reduces the impact of manual operation, and further improves assembly accuracy.

[0016] A second lead screw perpendicular to the baffle is fixedly installed on either side of the baffle. The second lead screw passes through a second lead screw jack fixedly installed on the mounting frame and moves back and forth as controlled by the second lead screw jack.

[0017] To achieve adjustable baffles to accommodate different models of leaf spring covers, which have different rib thicknesses, a second lead screw and a second lead screw jack are used in conjunction. By driving the second lead screw jack, the second lead screw is moved back and forth, which in turn moves the baffles and adjusts the distance between the two baffles.

[0018] The baffle on either side is connected to the support seat by bolts. A nut is provided on the inner side of the baffle to limit the relative position between the baffle and the support seat. The nut is threadedly connected to the bolt's threaded portion.

[0019] To make the baffles adjustable, a nut is installed on the inside of the baffle. After the adjusting bolt extends outward, the nut is tightened to position the baffle, thereby adjusting the distance between the two baffles.

[0020] A baffle on either side is connected to a support seat via a screw. A nut is provided on each side of the baffle to limit the relative position between the baffle and the support seat. The nut is threadedly connected to the screw.

[0021] To achieve adjustable baffles, a double-nut structure is used. The screw and the support are fixed in position by threaded connection. Adjusting the nuts on the inner and outer sides allows for adjustment of the baffles, thereby controlling the distance between the two baffles.

[0022] A T-shaped slider is provided at the bottom of the leaf spring cover limiting block on either side, and a T-shaped groove is provided on the support seat at the position corresponding to the slider, and the slider can be slidably installed in the groove.

[0023] The leaf spring cover limiting block is provided with a third lead screw perpendicular to the leaf spring cover limiting block near the outer side. The third lead screw passes through a third lead screw lift fixedly installed on the mounting frame and moves back and forth through the third lead screw lift.

[0024] To achieve the adjustability of the leaf spring cover limiting block, the leaf spring cover limiting block and the support seat are connected by a slider and a groove to achieve the guiding function of the guide rail. The leaf spring cover limiting block is moved left and right by the third lead screw and the third lead screw lifting mechanism to adjust the distance between the leaf spring cover limiting blocks on both sides.

[0025] A T-shaped slider is provided at the bottom of the leaf spring cover limiting block on either side, and a T-shaped groove is provided on the support seat at the position corresponding to the slider, and the slider can be slidably installed in the groove.

[0026] The leaf spring cover limiting block is connected to the support seat by bolts. A nut is provided on the inner side of the leaf spring cover limiting block to limit the relative position between the leaf spring cover limiting block and the support seat. The nut is threadedly connected to the bolt's screw portion.

[0027] To make the leaf spring cover limiting block adjustable, a nut is installed inside the leaf spring cover limiting block. After adjusting the distance the bolt extends outward, the nut is tightened to position the leaf spring cover limiting block, thereby adjusting the distance between the two leaf spring cover limiting blocks.

[0028] Beneficial effects: This utility model uses a limiting support assembly to fix the position of the heavy leaf spring cover. Then, by pushing the mounting bracket and using casters to adjust the relative position with the U-bolt on the leaf spring, the alignment of the leaf spring cover is more precise and convenient, saving manpower and improving assembly efficiency. By using a lifting assembly, after accurate positioning, the first lead screw is controlled to move up and down by a first lead screw lift via a motor drive or rocker arm drive, pushing the support seat up or controlling its descent. This ensures accuracy while reducing manual labor intensity, ensuring production safety, and further improving work efficiency and production quality.

[0029] By setting baffles and supporting slopes on the upper edge of the baffles to adapt to the bottom shape of the leaf spring cover, the contact area is increased, making the support more stable. Baffles on both sides restrict the stiffeners of the leaf spring cover to a predetermined position, improving the installation stability of the leaf spring cover. After the leaf spring cover is supported by the baffles, there is reserved assembly space below, which makes it easier for assembly personnel to install the nuts of the U-bolts, further improving assembly efficiency.

[0030] To achieve precise positioning for the overall installation, and because leaf springs of different specifications have different widths, the positioning rod in the long slot can be adjusted to match the positioning of leaf springs of different models and specifications. This allows the leaf spring positioning baffle to contact the side of the leaf spring, thus positioning the leaf spring. This provides auxiliary positioning during installation, reduces the impact of manual operation, and further improves assembly accuracy. Attached Figure Description

[0031] 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0032] Figure 1 This is a diagram showing the connection state of this utility model with the leaf spring and U-bolt.

[0033] Figure 2 This is a structural diagram of the lifting component of this utility model.

[0034] Figure 3 This is a structural diagram of the limiting support assembly of this utility model.

[0035] Figure 4 This is a structural diagram of the positioning column. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "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.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] like Figures 1 to 4 As shown, a leaf spring end cap mounting fixture includes a mounting frame 1. The bottom of the mounting frame 1 is provided with casters 2 arranged in a rectangular array. The top of the mounting frame 1 is provided with a limiting support assembly 3. The limiting support assembly 3 includes a set of leaf spring end cap limiting blocks 31 and a support seat 32 arranged opposite to each other. The leaf spring end cap limiting blocks 31 are detachably installed at both ends of the upper side of the support seat 32. The middle of the mounting frame 1 is provided with a lifting assembly 4. The lifting assembly 4 includes a first screw jack 41 fixedly connected to the mounting frame 1 through a mounting plate and a first screw 42 that passes through the first screw jack 41 and is controlled to move up and down by the first screw jack 41. The top of the first screw 42 passes through the mounting frame 1 and is fixedly connected to the support plate.

[0040] This invention uses a limiting support assembly 3 to fix the position of the heavy leaf spring cover. Then, by pushing the mounting bracket 1 and using the casters 2 to adjust the relative position with the U-bolt on the leaf spring, the alignment of the leaf spring cover is more precise and convenient, saving manpower and improving assembly efficiency. By using a lifting assembly 4, after accurate positioning, the first lead screw 42 is moved up and down by the first lead screw jack 41 through a motor drive or rocker drive, pushing the support seat 32 to move up or control its descent. This ensures accuracy while reducing manual labor intensity, ensuring production safety, and further improving work efficiency and production quality.

[0041] It also includes at least one guide post 5 that is fixedly connected to the support plate through the upper side of the mounting frame 1. A guide cylinder 6 is provided on the bottom surface of the upper side of the mounting frame 1, and the guide post 5 is slidably installed in the guide cylinder 6.

[0042] To improve installation accuracy and prevent the support seat 32 from rotating during the rise of the first lead screw 42, thus avoiding changes in positioning accuracy, a guide cylinder 6 and a guide post 5 that penetrates the guide cylinder 6 are set to keep the position unchanged during the rise of the support seat 32 by the first lead screw 42, thereby guiding the overall movement process.

[0043] The support base 32 is provided with detachable baffles 7 on both the front and rear sides. The baffles 7 have support inclined surfaces 71 at both ends that are adapted to the shape of the leaf spring cover. The stiffeners of the leaf spring cover are embedded between the baffles 7 on both sides.

[0044] By setting baffles 7 and supporting inclined surfaces 71 along the upper edge of baffles 7, the bottom shape of the leaf spring cover is adapted to increase the contact area and make the support more stable. Baffles 7 are set on both sides to restrict the stiffeners of the leaf spring cover in a predetermined position, thereby improving the installation stability of the leaf spring cover. After the leaf spring cover is supported by baffles 7, there is a reserved assembly space below, which makes it easier for assembly personnel to install the nuts of U-bolts, further improving assembly efficiency.

[0045] The leaf spring cover limiting block 31 is configured with an arc surface 311 adapted to the leaf spring cover on the side near the leaf spring cover, and an outwardly expanding guide slope 312 is provided on the upper edge of the arc surface 311.

[0046] To facilitate the installation of the leaf spring cover in the limiting support assembly 3 and improve the limiting effect, an appropriate arc surface 311 structure is set to increase the contact area with the leaf spring cover. A guide slope 312 is set to guide the installation process so that the leaf spring cover is accurately installed between the predetermined leaf spring cover limiting blocks 31.

[0047] The mounting bracket 1 has symmetrically positioned long slots 8 on its upper side. A positioning rod 9 is installed through the long slot 8. The positioning rod 9 is positioned in the long slot 8 by bolts at the bottom. At least one of the positioning rods 9 is fitted with a leaf spring positioning block 10. After positioning, the leaf spring positioning block 10 contacts the side of the leaf spring.

[0048] In order to achieve precise positioning for the overall installation, since the leaf springs of different specifications have different widths, the positioning rod 9 can be adjusted in the long slot 8 to match the positioning of leaf springs of different models and specifications. This allows the leaf spring positioning block 10 to contact the side of the leaf spring, thereby positioning the leaf spring. This can play an auxiliary positioning role during the installation process, reduce the impact of manual operation, and further improve the assembly accuracy.

[0049] In Example 2, a second lead screw perpendicular to the baffle 7 is fixedly installed on the baffle 7 on any side. The second lead screw passes through a second lead screw jack fixedly installed on the mounting frame 1 and moves back and forth through the second lead screw jack.

[0050] To make the baffle 7 adjustable to accommodate different models of leaf spring covers, which have different rib thicknesses, the second lead screw and the second lead screw jack are used in conjunction. By driving the second lead screw jack, the second lead screw is moved back and forth, which in turn moves the baffle 7 and adjusts the distance between the two baffles 7.

[0051] In embodiment 3, the baffle 7 on either side is connected to the support seat 32 by bolts. A nut is provided on the inner side of the baffle 7 to limit the relative position between the baffle 7 and the support seat 32. The nut is threadedly connected to the bolt's threaded portion.

[0052] To make the baffle 7 adjustable, a nut is installed on the inside of the baffle 7. After the adjusting bolt extends outward, the nut is tightened to position the baffle 7, thereby adjusting the distance between the two baffles 7.

[0053] In Example 4, any side baffle 7 is connected to the support seat 32 by a screw. A nut is provided on each side of the baffle 7 to limit the relative position of the baffle 7 and the support seat 32. The nut is threadedly connected to the screw.

[0054] To make the baffle 7 adjustable, a double nut structure is used. The screw and the support seat 32 are fixed in position by threaded connection. By adjusting the nuts on the inner and outer sides, the baffle 7 can be adjusted to control the distance between the two baffles 7.

[0055] Example 5: A T-shaped slider is provided at the bottom of the leaf spring cover limiting block 31 on any side, and a T-shaped groove is provided on the support seat 32 at the position corresponding to the slider, and the slider can be slidably installed in the groove;

[0056] The leaf spring cover limiting block 31 is provided with a third lead screw perpendicular to the leaf spring cover limiting block 31 near the outer side. The third lead screw passes through the third lead screw lift fixedly installed on the mounting frame 1 and moves back and forth through the third lead screw lift.

[0057] In order to make the leaf spring cover limiting block 31 adjustable, the leaf spring cover limiting block 31 and the support seat 32 cooperate through the slider and the slide groove to realize the guiding function of the guide rail. Through the cooperation of the third lead screw and the third lead screw lifting mechanism, the leaf spring cover limiting block 31 is driven to move left and right to adjust the distance between the two leaf spring cover limiting blocks 31.

[0058] Example 6: A T-shaped slider is provided at the bottom of the leaf spring cover limiting block 31 on any side, and a T-shaped groove is provided on the support seat 32 at the position corresponding to the slider, and the slider can be slidably installed in the groove;

[0059] The leaf spring cover limiting block 31 is connected to the support seat 32 by bolts. A nut is provided on the inner side of the leaf spring cover limiting block 31 to limit the relative position of the leaf spring cover limiting block 31 and the support seat 32. The nut is threadedly connected to the bolt's screw portion.

[0060] In order to make the leaf spring cover limiting block 31 adjustable, a nut is provided on the inner side of the leaf spring cover limiting block 31. After the adjusting bolt extends outward, the nut is tightened to achieve the positioning of the leaf spring cover limiting block 31, thereby adjusting the distance between the two leaf spring cover limiting blocks 31.

[0061] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0062] 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 leaf spring end cap mounting tool characterized by: The utility model provides an installation frame (1) bottom is provided with the universal wheel (2) of rectangular array distribution, installation frame (1) top is provided with the limiting support subassembly (3), limiting support subassembly (3) includes the set of plate spring cover limiting block (31) of opposite arrangement and support seat (32), plate spring cover limiting block (31) can be detachably installed on support seat (32) upside two end positions, installation frame (1) middle part is provided with lifting subassembly (4), lifting subassembly (4) includes the first screw rod lifter (41) of fixed connection with installation frame (1) through mounting plate and the first screw rod (42) of control up and down movement through first screw rod lifter (41) and first screw rod lifter (41) are passed, first screw rod (42) top fixed connection with support plate through installation frame (1).

2. The plate spring end cap mounting tool of claim 1, wherein: Still include at least one guide column (5) through the fixed connection of installation frame (1) upside and support plate, installation frame (1) upside bottom is provided with guide cylinder (6), guide column (5) is slidably installed in guide cylinder (6).

3. The leaf spring end cap mounting tool of claim 1, wherein: Support seat (32) front and back sides are provided with detachably installed baffle (7), the support inclined plane (71) of the shape adaptation of plate spring cover is set along both ends on baffle (7), and the rib plate of plate spring cover is embedded between both sides baffle (7).

4. The leaf spring end cap mounting tool of claim 1, wherein: Plate spring cover limiting block (31) is provided with the arc surface (311) of the shape adaptation of plate spring cover near plate spring cover side, and the guide inclined plane (312) of outward expansion is set on arc surface (311).

5. The leaf spring end cap mounting tool of claim 1, wherein: The long groove (8) of position symmetry is opened in installation frame (1) upside left and right sides, and the positioning rod (9) is arranged through long groove (8), the position of positioning rod (9) in long groove (8) is limited by the bolt of bottom, and at least one positioning rod (9) is provided with plate spring positioning block (10) on the sleeve, and after positioning, plate spring positioning block (10) is contacted with plate spring side edge.

6. The leaf spring end cap mounting tool of claim 1, wherein: The second screw rod perpendicular to baffle (7) is fixedly arranged on the baffle (7) of any side, the second screw rod lifter is fixedly installed on installation frame (1) through the second screw rod, and the front and back movement is controlled through the second screw rod lifter.

7. The leaf spring end cap mounting tool of claim 1, wherein: The baffle (7) of any side is connected with support seat (32) through bolt, and the nut for limiting the relative position of baffle (7) and support seat (32) is arranged in the inner side of baffle (7), and the screw rod part of bolt is threadedly connected with nut.

8. The leaf spring end cap mounting tool of claim 1, wherein: The baffle (7) of any side is connected with support seat (32) through screw rod, and the nut for limiting the relative position of baffle (7) and support seat (32) is arranged in the both sides of baffle (7) respectively, and the screw rod is threadedly connected with nut.

9. The leaf spring end cap mounting tool of any one of claims 6 to 8, wherein: The T-shaped sliding block is arranged at the bottom of plate spring cover limiting block (31) of any side, and the T-shaped sliding groove is arranged on support seat (32) in position correspondence with sliding block, and the sliding block is slidably installed in sliding groove; The plate spring cover limiting block (31) is provided with a third screw rod perpendicular to the plate spring cover limiting block (31) near the outer side, the third screw rod penetrates through a third screw rod elevator fixedly installed on the mounting rack (1), and the front and back movements are controlled through the third screw rod elevator.

10. The leaf spring end cap mounting tool of any one of claims 6 to 8, wherein: A T-shaped sliding block is arranged at the bottom of any one side plate spring cover limiting block (31), a T-shaped sliding groove is arranged at a position corresponding to the sliding block on the supporting seat (32), and the sliding block is slidably installed in the sliding groove. The plate spring cover limiting block (31) is connected with the supporting seat (32) through a bolt, and the inner side of the plate spring cover limiting block (31) is provided with a nut for limiting the relative position of the plate spring cover limiting block (31) and the supporting seat (32), and the nut is threadedly connected with the screw rod part of the bolt.

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