Lower frame connecting bolt protection device and engineering machinery

Abstract

The utility model discloses a lower vehicle frame connecting bolt protective device and engineering machinery. The lower vehicle frame connecting bolt protective device comprises a protective cover and a detachable fastening part. The protective cover is arranged at the joint of the H-shaped frame and the longitudinal beam, and all fastening bolts used for fixing the H-shaped frame and the longitudinal beam together at the joint are located in the protective cover. And the detachable fastening part is configured to fix and unfix the protective cover and the H-shaped frame. According to the protective cover, the connecting bolts of the H-shaped frame and the longitudinal beam can be well prevented from being influenced by accumulation of sundries such as soil and coal stones, the soil on the surface of the protective cover is more convenient to clean than the soil among the bolts, and the torque of the connecting bolts is easier to detect after the protective cover is taken down.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lower frame connecting bolt protection device belongs to engineering machinery technical field. BACKGROUND

[0002] At present, the H frame and the longitudinal beam connecting part area of the lower frame of the mine hydraulic excavator is extremely easy to accumulate mud, coal and other sundries in the operation process, and the operator needs to process regularly, if not cleaned for a long time, the accumulated mud and coal will be more and more, plus the influence of water vapor, on the one hand, it will lead to the solidification of the accumulation, causing cleaning difficulty, on the other hand, the H frame and the longitudinal beam connecting bolt will be covered by the accumulation, which cannot meet the market demand for regular torque detection of the lower frame connecting bolt. SUMMARY

[0003] According to the deficiencies of the prior art, the utility model provides a lower frame connecting bolt protection device, which can well protect the connecting bolt of the H frame and the longitudinal beam from the influence of the accumulation of mud, coal and other sundries, and it is more convenient to clean the mud on the surface of the protective cover than to clean the mud between the bolts, and it is also easier to detect the torque of the connecting bolt after removing the protective cover.

[0004] The utility model is implemented according to the following technical scheme:

[0005] In the first aspect, the utility model provides a lower frame connecting bolt protection device, comprising:

[0006] The protective cover is arranged at the connecting part of the H frame and the longitudinal beam, and all the fastening bolts for fixing the H frame and the longitudinal beam together at the connecting part are located in the protective cover;

[0007] The detachable fastening component is configured to fix and release the fixing between the protective cover and the H frame.

[0008] In some embodiments, the protective cover is composed of two cover bodies in a symmetrical structure.

[0009] In some embodiments, the cover body comprises:

[0010] The right-angle vertical plate I is vertically arranged on the upper surface of the longitudinal beam and abuts against the connecting seat periphery of the H frame end part;

[0011] The right-angle flat plate is horizontally fixed on the top of the right-angle vertical plate I, and the outer right-angle periphery of the right-angle flat plate is completely butted together with the right-angle top edge of the right-angle vertical plate I; the U-shaped gap formed by the butt joint of the right-angle flat plates on both sides is used for avoiding the inclined support plate at the H frame end part.

[0012] In some embodiments, the cover body further comprises:

[0013] Right-angle plate II is fixed to the bottom surface of the right-angle flat plate. Right-angle plate II contacts the connecting seat and is used to support the right-angle flat plate. A right-angle channel is formed between right-angle plate II and right-angle plate I, and the fastening bolts are arranged in the right-angle channel.

[0014] In some embodiments, the cover further includes:

[0015] At least one stiffener is fixed to the bottom surface of the right-angled plate between the inclined support plate and the right-angled vertical plate II, for supporting the right-angled plate.

[0016] In some embodiments, the detachable fastening component is a bolt, and multiple threaded seats are provided at intervals on the front, left and right sides of the connecting seat. The right-angled upright plates I on both sides are provided with through holes corresponding to the threaded seats. The bolt cooperates with the through holes and threaded seats to fix the cover on the connecting seat.

[0017] In some embodiments, it also includes:

[0018] A baffle structure is arranged on the longitudinal beam on the front side of the protective cover. The baffle structure is a top-pointed and bottom-wide structure. Its top is not higher than the top surface of the protective cover, and its bottom surface extends to the outer edge of the longitudinal beam.

[0019] The detachable hinge component is configured to fix and release the baffle structure from the protective cover, and the baffle structure can be rotated around the hinge point.

[0020] In some embodiments, the baffle structure comprises two baffle assemblies arranged side by side; the baffle assembly includes:

[0021] The inclined baffle has its top edge located on the top surface of the protective cover and its bottom edge located on the outer edge of the longitudinal beam.

[0022] A pair of opposing triangular plates are fixed at the left and right edges of the baffle, and a gap is left between the triangular plates and the longitudinal beam so that the baffle assembly does not interfere with the longitudinal beam when it is flipped outward.

[0023] In some embodiments, the baffle is provided with at least one cylinder I extending along the length of the longitudinal beam, and the protective cover is provided with at least one cylinder II arranged coaxially with the cylinder I; the detachable hinge component consists of a pin and at least one cotter pin, the pin passes through the cylinder I and the cylinder II, and the cotter pin is inserted into the pin to limit its axial movement.

[0024] In some embodiments, the upper structure of the baffle is concave, with a coaxially arranged cylinder I rolled out from each of its two protruding parts; the cylinder II is located between the two cylinders I; one end of the pin shaft is a boss in the length direction, and the other end of the pin shaft is provided with a radial through hole, and the cotter pin is inserted into the radial through hole.

[0025] Secondly, this utility model provides an engineering machinery, including an H-frame, longitudinal beams, and the aforementioned underframe connecting bolt protection device.

[0026] The beneficial effects of this utility model are:

[0027] The underframe connecting bolt protection device provided by this utility model can effectively prevent soil and coal from falling into the connection area between the longitudinal beam and the H-frame, burying or even solidifying the connecting bolts, making cleaning difficult, and in severe cases, even loosening or damaging the connecting bolts between the H-frame and the longitudinal beam. On the other hand, this protection device is arranged on the outside of the longitudinal beam, making it easy to disassemble and maintain. Its structure can reduce the accumulation of debris in the connection area and facilitate cleaning. In addition, after the protection device is disassembled, it can better meet the market demand for regular torque testing of the underframe connecting bolts. Attached Figure Description

[0028] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0029] In the attached diagram:

[0030] Figure 1 This is a schematic diagram of the cover of this utility model;

[0031] Figure 2 This is a schematic diagram of the baffle assembly of this utility model;

[0032] Figure 3 This is a schematic diagram of the pin shaft of this utility model;

[0033] Figure 4 This is a schematic diagram of the assembly of the protective cover of this utility model;

[0034] Figure 5 This is a schematic diagram of the assembly of the protective device of this utility model.

[0035] Attached diagram labels: 1. Right-angled vertical plate I, 2. Right-angled flat plate, 3. Right-angled vertical plate II, 4. Rib plate, 5. Cylindrical plate II, 6. Baffle, 7. Triangular plate, 8. Cover body, 9. Cover body, 10. Bolt, 11. Threaded seat, 12. Longitudinal beam, 13. H-frame, 14. Baffle assembly, 15. Pin, 16. Cotter pin, 17. Diagonal support plate, 18. Connecting seat.

[0036] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "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.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] like Figure 4 As shown, a lower frame connecting bolt protection device includes a protective cover and a detachable fastening component; the protective cover is arranged at the connection between the H-frame 13 and the longitudinal beam 12, and all the fastening bolts used to fix the H-frame 13 and the longitudinal beam 12 together are located inside the protective cover; the detachable fastening component is configured to fix and release the protective cover from the H-frame 13.

[0041] The following provides a further explanation of the specific structure of the aforementioned protective cover.

[0042] Continue to refer to Figure 1 As shown, the protective cover is composed of two symmetrical cover bodies 8 and 9 joined together.

[0043] Further options, such as Figure 1As shown, the covers 8 and 9 include a right-angled vertical plate I1 and a right-angled flat plate 2; the right-angled vertical plate I1 stands on the upper surface of the longitudinal beam 12 and abuts against the periphery of the connecting seat 18 at the end of the H-frame 13; the right-angled flat plate 2 is horizontally fixed to the top of the right-angled vertical plate I1, and the outer right-angled periphery of the right-angled flat plate 2 is completely joined with the right-angled top edge of the right-angled vertical plate I1; the U-shaped notch formed by the joining of the right-angled flat plates 2 on both sides is used to avoid the inclined support plate 17 at the end of the H-frame 13.

[0044] Further plans will continue to be considered. Figure 1 As shown, the covers 8 and 9 also include a right-angled plate II3, which is fixed to the bottom surface of the right-angled plate 2. The right-angled plate II3 contacts the connecting seat 18 and is used to support the right-angled plate 2. A right-angled channel is formed between the right-angled plate II3 and the right-angled plate I1, and the fastening bolts are arranged in the right-angled channel.

[0045] Further plans will continue to be considered. Figure 1 As shown, the cover body 8 and 9 also include at least one stiffening plate 4, which is fixed to the bottom surface of the right-angled plate 2 between the inclined support plate 17 and the right-angled vertical plate II 3, and is used to support the right-angled plate 2.

[0046] The preferred design is shown in the attached diagram with two stiffening slabs 4 arranged side by side. Of course, in actual design, it is not limited to two stiffening slabs; there can also be three or four stiffening slabs.

[0047] Further options, such as Figure 1 , Figure 4 As shown, the detachable fastening component is the bolt 10. Multiple threaded seats 11 are provided at intervals on the front, left and right sides of the connecting seat 18. The right-angled upright plates I1 on both sides are provided with through holes corresponding to the threaded seats 11. The bolt 10 cooperates with the through holes and the threaded seats 11 to fix the cover 8 and 9 on the connecting seat 18.

[0048] like Figure 5 As shown, the protective device also includes a baffle structure and a detachable hinge component. The baffle structure is arranged on the longitudinal beam 12 on the front side of the protective cover. The baffle structure is a top-narrow and bottom-wide structure. Its top is not higher than the top surface of the protective cover, and its bottom surface extends to the outer edge of the longitudinal beam 12. The detachable hinge component is configured to fix and release the baffle structure from the protective cover, and the baffle structure can be rotated around the hinge point.

[0049] Further options, such as Figure 2 , Figure 5As shown, the baffle structure consists of two baffle assemblies 14 arranged side by side. The baffle assembly 14 includes an inclined baffle 6 and a pair of opposing triangular plates 7. The top edge of the inclined baffle 6 is located on the top surface of the protective cover, and the bottom edge is located on the outer edge of the longitudinal beam 12. The pair of opposing triangular plates 7 are fixed at the left and right edges of the baffle 6. A gap is left between the triangular plates 7 and the longitudinal beam 12 to prevent the longitudinal beam 12 from interfering with the baffle assembly 14 when the baffle assembly 14 is flipped outward.

[0050] In a further embodiment, the baffle 6 is provided with at least one cylinder I extending along the length of the longitudinal beam 12, and the protective cover is provided with at least one cylinder II 5 arranged coaxially with the cylinder I; the detachable hinge component consists of a pin 15 and at least one cotter pin 16, the pin 15 passes through the cylinder I and the cylinder II 5, and the cotter pin 16 is inserted into the pin 15 to limit its axial movement.

[0051] Preferred solutions, such as Figure 2 , Figure 3 As shown, the upper structure of the baffle 6 is concave, with a coaxially arranged cylinder I rolled out from each of its two protruding parts; cylinder II 5 is located between the two cylinders I; one end of the pin 15 in the length direction is a boss, and the other end of the pin 15 in the length direction is provided with a radial through hole, and the cotter pin 16 is inserted into the radial through hole.

[0052] The following describes the installation process of the aforementioned protective device on the longitudinal beam.

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a hydraulic excavator requires four sets of protective devices. One set needs to be installed at each of the H-frame connecting bolts. An example is given illustrating the installation method for one set of protective devices. Specifically, covers 8 and 9 are mounted on the H-frame 13 via bolts 10. A baffle assembly 14 is connected to covers 8 and 9 via pins 15 and cotter pins 16, and can rotate around pin 15. Under normal conditions, the baffle assembly 14 is located on the top plate of the longitudinal beam 12. To remove covers 8 and 9, simply rotate and lift the baffle assembly 14 to remove the bolts 10. The baffle assembly 14 helps mud and debris slide off covers 8 and 9 for easy cleaning and also effectively protects the bolts.

[0054] In summary, this utility model provides a protective device for the connecting bolts of the underframe, achieving the following functions and effects:

[0055] 1. This utility model is mainly used to prevent soil, coal, and other debris from falling onto the longitudinal beams of the underframe, accumulating or forming solidified material in the connection area between the H-frame and the longitudinal beams, causing difficulties in later cleaning and failing to meet the market's demand for regular torque testing of the underframe connection bolts.

[0056] 2. The structure of this protective device can prevent mud, coal, and other debris from falling onto the connecting bolts of the underframe, thus providing a certain degree of protection for the bolts.

[0057] 3. The sloping area of ​​this protective device can, to a certain extent, prevent the accumulation of debris such as soil and coal in the connection area between the H-frame and the longitudinal beam, and also helps to clean up debris.

[0058] 4. This protective device adopts a modular design and is assembled on the outside of the longitudinal beam, which facilitates installation and disassembly by maintenance and service personnel.

[0059] The following describes the engineering machinery provided by this utility model. The engineering machinery described below can be referred to in correspondence with the underframe connecting bolt protection device described above.

[0060] The engineering machinery provided by this utility model may include the underframe connecting bolt protection device as described in any of the above embodiments.

[0061] The beneficial effects achieved by the engineering machinery provided by this utility model are consistent with the beneficial effects achieved by the underframe connecting bolt protection device provided by this utility model, so they will not be repeated here.

[0062] It should be noted that the aforementioned construction machinery can be tracked cranes, tracked excavators, tracked pump trucks, or other tracked construction machinery.

[0063] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0064] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0065] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A protective device for underframe connecting bolts, characterized in that, include: A protective cover is arranged at the connection between the H-frame and the longitudinal beam, and all the fastening bolts used to fix the H-frame and the longitudinal beam together are located inside the protective cover. The detachable fastening component is configured to secure and release the protective cover from the H-frame.

2. The underframe connecting bolt protection device according to claim 1, characterized in that: The protective cover is composed of two symmetrically structured cover panels joined together.

3. The underframe connecting bolt protection device according to claim 2, characterized in that, The cover includes: Right-angled vertical plate I stands upright on the upper surface of the longitudinal beam and abuts against the periphery of the connecting seat at the end of the H-frame; A right-angled plate is horizontally fixed to the top of the right-angled vertical plate I, and the outer right-angled perimeter of the right-angled plate is completely aligned with the right-angled top edge of the right-angled vertical plate I; the U-shaped notch formed by the two right-angled plates being aligned together is used to avoid the inclined support plate at the end of the H-frame.

4. The underframe connecting bolt protection device according to claim 3, characterized in that, The cover also includes: Right-angle plate II is fixed to the bottom surface of the right-angle flat plate. Right-angle plate II contacts the connecting seat and is used to support the right-angle flat plate. A right-angle channel is formed between right-angle plate II and right-angle plate I, and the fastening bolts are arranged in the right-angle channel.

5. A protective device for underframe connecting bolts according to claim 4, characterized in that, The cover also includes: At least one stiffener is fixed to the bottom surface of the right-angled plate between the inclined support plate and the right-angled vertical plate II, for supporting the right-angled plate.

6. The underframe connecting bolt protection device according to claim 3, characterized in that: The detachable fastening component is a bolt. Multiple threaded seats are provided at intervals on the front, left and right sides of the connecting seat. The right-angled upright plates I on both sides are provided with through holes corresponding to the threaded seats. The bolts cooperate with the through holes and threaded seats to fix the cover on the connecting seat.

7. The underframe connecting bolt protection device according to claim 1, characterized in that, Also includes: A baffle structure is arranged on the longitudinal beam on the front side of the protective cover. The baffle structure is a top-pointed and bottom-wide structure. Its top is not higher than the top surface of the protective cover, and its bottom surface extends to the outer edge of the longitudinal beam. The detachable hinge component is configured to fix and release the baffle structure from the protective cover, and the baffle structure can be rotated around the hinge point.

8. A protective device for underframe connecting bolts according to claim 7, characterized in that, The baffle structure consists of two baffle assemblies arranged side by side; the baffle assembly includes: The inclined baffle has its top edge located on the top surface of the protective cover and its bottom edge located on the outer edge of the longitudinal beam. A pair of opposing triangular plates are fixed at the left and right edges of the baffle, and a gap is left between the triangular plates and the longitudinal beam so that the baffle assembly does not interfere with the longitudinal beam when it is flipped outward.

9. A protective device for underframe connecting bolts according to claim 8, characterized in that: The baffle is provided with at least one cylindrical tube I extending along the length of the longitudinal beam, and the protective cover is provided with at least one cylindrical tube II arranged coaxially with the cylindrical tube I; The detachable hinge component consists of a pin and at least one cotter pin. The pin passes through cylinder I and cylinder II, and the cotter pin is inserted into the pin to limit its axial movement.

10. A protective device for underframe connecting bolts according to claim 9, characterized in that: The upper structure of the baffle is concave, with a coaxially arranged cylinder I rolled out from each of its two protruding parts; the cylinder II is located between the two cylinders I. One end of the pin along its length is a boss, and the other end of the pin along its length is provided with a radial through hole, into which the cotter pin is inserted.

11. An engineering machine, comprising an H-frame and longitudinal beams, characterized in that: It also includes the underframe connecting bolt protection device as described in any one of claims 1 to 10.

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