A connecting link for a dump car

Abstract

The utility model relates to the technical field of mine transport equipment, concretely relates to a tipping-dump mine car connecting hook. The utility model aims at solving the problems of easy abrasion, deformation and fracture of the traditional tipping-dump mine car hook under complex working conditions and high maintenance cost. The utility model is composed of a hook base, a buckling block, a rotating shaft assembly, a buffer mechanism, a locking mechanism and a limiting mechanism. The buffer mechanism includes a buffer base, a roller and a buffer spring, can absorb the impact force during the transportation of the mine car and reduce friction; the locking mechanism and the limiting mechanism form double insurance for the limiting of the buckling block. The utility model effectively buffers the impact through the buffer mechanism, reduces the abrasion of components, the detachable design of each component facilitates installation and maintenance, improves the safety and stability of the tipping-dump mine car transportation and reduces the equipment maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of mining transportation equipment technology, specifically to a connecting hook for a tipper ore truck. Background Technology

[0002] In the mining industry, tipper trucks are key material transport equipment, undertaking the important task of transporting bulk materials such as coal, ore, and slag from the mining site to designated locations. They are widely used in underground and surface operations of various mines, including coal mines, iron mines, and phosphate mines, as well as in tunnel projects for railways, highways, and water conservancy projects. Tipper trucks are connected by hooks to form transport formations, ensuring the stability of the truck bodies and completing material transport and unloading operations under complex road conditions.

[0003] Traditional dump truck hooks have revealed many defects in actual operation: when the truck travels in bumpy underground tunnels or on rugged open-pit roads, especially under heavy loads or accidental collisions, the connection between the hook and the truck bed experiences frequent and severe impacts, leading to wear, deformation, or even breakage of the hook itself. For example, in inclined shaft transportation in mines, the impact force generated by the undulating track of a fully loaded dump truck can subject the hook to tensile forces several times its rated load. Ordinary cast steel hooks often fail due to fatigue wear, leading to disengagement accidents, which not only interrupt the transportation process but may also cause equipment damage and safety hazards.

[0004] In addition, ordinary cast steel hooks lack effective buffer and vibration absorption design. When the mine car starts, brakes, or passes through uneven road surfaces, the instantaneous impact force acts directly on the hook body, aggravating structural damage. Frequent replacement of hook components is required, which increases the maintenance cost of mining equipment.

[0005] In conclusion, there is an urgent need to develop a new type of connecting hook for tipper mining trucks that has buffering performance and low friction loss. Utility Model Content

[0006] In response to the work requirements and existing problems in the aforementioned background technology, the inventors have considered and innovated in order to provide a connecting hook for tipper mining trucks, which is used for connecting tipper mining trucks in transport formations, reducing the risk of unhooking during heavy-load transportation of tipper mining trucks and extending the service life of the equipment.

[0007] To solve the above problems and achieve the above objectives, the present invention adopts the following technical solution:

[0008] A hook for a tipper ore truck is disclosed, comprising a hook base, a fastening block, a rotating shaft assembly, a buffer mechanism, a locking mechanism, and a limiting mechanism. The upper end of the hook base has a connecting portion for fixing the tipper ore truck or tractor. The hook base contains a buffer mechanism limiting groove and two sliding grooves. One end of the fastening block is rotatably connected to the hook base via the rotating shaft assembly, and the other end is detachably connected to the hook base via the locking mechanism. The rotating shaft assembly is detachably connected to the fastening block and the hook base. The buffer mechanism includes a buffer base with two sliding columns fixedly connected to it. The buffer mechanism is installed within the buffer mechanism limiting groove, and its sliding columns are slidably connected to the sliding grooves. The locking mechanism is detachably connected to the hook base and the fastening block. The limiting mechanism is detachably connected to the hook base and is used to limit the movement of the fastening block.

[0009] Preferably, the hook base has two first connecting holes and the fastening block has two third connecting holes. The first connecting holes and the third connecting holes are shaped to match the locking mechanism. The locking mechanism passes through the first connecting holes and the third connecting holes and is detachably connected to the hook base and the fastening block.

[0010] Preferably, the hook base has two second connecting holes and the fastening block has two fourth connecting holes. The second connecting holes and the fourth connecting holes are shaped to match the rotating shaft assembly. The rotating shaft assembly passes through the second connecting holes and the fourth connecting holes and is detachably connected to the hook base and the fastening block.

[0011] Preferably, the rotating shaft assembly consists of a rotating shaft, a limiting spring, and a limiting nut; the rotating shaft has a cylindrical structure, with a nut fixedly connected to one end and a thread on the other end; there are two limiting springs, which are inserted through the rotating shaft; the limiting nut matches the thread on the rotating shaft.

[0012] Preferably, the buffer mechanism consists of a buffer base, rollers, and buffer springs; two sliding columns are fixedly connected to the buffer base, and the buffer base has a rolling groove; there are several rollers, which are fixedly connected to the rolling grooves through a rotating shaft and can rotate; there are several buffer springs, which are fixedly connected to the buffer base.

[0013] Preferably, the locking mechanism consists of a locking cylinder and a locking stud, wherein the locking cylinder has an internal thread and the locking stud has an external thread that matches the locking cylinder.

[0014] Preferably, the limiting mechanism consists of a fixing plate and fixing bolts, and the fixing plate is detachably connected to the hook base by two fixing bolts.

[0015] The working principle of this utility model is as follows:

[0016] When a tipper ore truck is in motion, especially on bumpy or rough roads, or during starting, braking, or a collision, it generates significant impact force. The buffer mechanism is installed within the buffer mechanism limiting groove of the hook base. Its two sliding columns are slidably connected to the groove, allowing the buffer mechanism to slide within a certain range. The buffer spring in the buffer mechanism compresses and deforms under impact, converting the impact force between the tipper ore trucks into the elastic potential energy of the spring, thereby absorbing and buffering most of the impact force and reducing the impact on the hook body. Simultaneously, the rollers are fixed in the roller groove of the buffer base via a rotating shaft and can rotate. During the movement of the tipper ore truck, this design uses rolling friction with the connecting column, significantly reducing friction compared to traditional cast steel parts, further reducing component wear. The design of the limiting mechanism and locking mechanism effectively mechanically locks and limits the position of the hook block, forming a double insurance and reducing the probability of hook disengagement accidents.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model enhances the stability of the connection between mining trucks and reduces the risk of accidents. Traditional tipper mining trucks, especially under heavy loads or during accidental collisions, are prone to wear, deformation, and even breakage at the connection point due to frequent impacts in bumpy underground tunnels and rugged open-air roads, leading to disengagement accidents that affect material transport and pose safety hazards. This utility model, by incorporating a buffer mechanism, absorbs and buffers most of the impact force generated during the tipper mining truck's operation, significantly reducing the impact on the hook body and effectively preventing damage due to excessive impact. This greatly enhances the stability of the tipper mining truck connection assembly. Simultaneously, the design of the limiting and locking mechanisms effectively mechanically locks and positions the fastening blocks, forming a double insurance, reducing the probability of disengagement accidents, improving the safety of tipper mining truck transportation, and reducing accident risks.

[0019] 2. This invention extends the service life of components and reduces equipment maintenance costs: Traditional cast steel hooks experience instantaneous impact forces directly acting on the hook body during mine car startup, braking, or traversing uneven surfaces, exacerbating component damage and leading to frequent hook assembly replacements, thus increasing equipment maintenance costs. This invention absorbs and buffers the impact forces generated during mine car movement through a buffer mechanism, while simultaneously reducing friction between the hook and connecting column through roller components, thereby reducing wear between components and extending the service life of this invention and its connected connecting column, thus lowering equipment maintenance costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the working state of this utility model;

[0021] Figure 2 This is one of the connection diagrams of this utility model and the connecting column of the tipper mine car;

[0022] Figure 3 This is the second schematic diagram of the connection between this utility model and the connecting column of the tipper mining car;

[0023] Figure 4 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 5 yes Figure 4 Side view of the schematic diagram of the three-dimensional structure shown;

[0025] Figure 6 yes Figure 5 The sectional view at point AA in the side view shown;

[0026] Figure 7 This is one of the three-dimensional assembly drawings of this utility model;

[0027] Figure 8 This is the second three-dimensional assembly drawing of this utility model;

[0028] Figure 9 This is the third three-dimensional assembly drawing of this utility model;

[0029] The numbers in the diagram are:

[0030] 1—Hook base; 11—Connecting part; 12—Buffer mechanism limiting groove; 13—Slide groove; 14—First connecting hole; 15—Second connecting hole;

[0031] 2—Snap-fit ​​block; 21—Third connecting hole; 22—Fourth connecting hole;

[0032] 3—Spindle assembly, 31—Spindle, 32—Limit spring, 33—Limit nut;

[0033] 4—Buffer mechanism; 41—Buffer base; 411—Sliding column; 412—Roller groove; 42—Roller; 43—Buffer spring;

[0034] 5—Locking mechanism; 51—Locking cylinder; 52—Locking stud;

[0035] 6—Limiting mechanism; 61—Fixing plate; 62—Fixing bolt;

[0036] 7—Dumper-type ore car; 71—Connecting column;

[0037] 8—Tractor, 81—Connecting column. Detailed Implementation

[0038] The present utility model patent will be further described in detail below with reference to the accompanying drawings and specific embodiments; it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model patent.

[0039] Example

[0040] like Figure 1 — Figure 9 The tipper mine car connecting hook shown is characterized in that the hook is composed of a hook base 1, a fastening block 2, a rotating shaft assembly 3, a buffer mechanism 4, a locking mechanism 5, and a limiting mechanism 6.

[0041] like Figure 4 — Figure 9 As shown, the hook base 1 is the basic support structure of the entire connecting hook. The upper end of the hook base 1 has a connecting part 11 for fixing and connecting the tipper mine car 7 or the tractor 8, which facilitates a stable connection with the vehicle. The hook base 1 is provided with a buffer mechanism limiting groove 12 and two sliding grooves 13, which provide space and guidance for the installation and sliding of the buffer mechanism. The hook base 1 has two first connecting holes 14 and two second connecting holes 15.

[0042] like Figure 4 — Figure 9 As shown, one end of the fastening block 2 is rotatably connected to the hook base 1 via a rotating shaft assembly 3, and the other end is detachably connected to the hook base 1 via a locking mechanism 5. The fastening block 2 has two third connecting holes 21, the first connecting hole 14 and the third connecting hole 21 matching the shape of the locking mechanism 5. The fastening block 2 also has two fourth connecting holes 23, the second connecting hole 15 and the fourth connecting hole 22 matching the shape of the rotating shaft assembly 3. The fastening block 2 enables the hook to form a closed structure, facilitating engagement and disengagement with adjacent tipper mining vehicles.

[0043] like Figure 4 — Figure 9 As shown, the rotating shaft assembly 3 passes through the second connecting hole 15 and the fourth connecting hole 22 and is detachably connected to the hook base 1 and the fastening block 2. The rotating shaft assembly 3 consists of a rotating shaft 31, a limiting spring 32, and a limiting nut 33. The rotating shaft 31 has a cylindrical structure, with a nut fixedly connected to one end and a thread on the other end. There are two limiting springs 32, which are inserted into the rotating shaft 31. The limiting springs 32 are used to limit the fastening block 2 to the middle of the buffer mechanism limiting groove 12. The limiting nut 33 matches the thread on the rotating shaft 31. The rotating shaft assembly 3 allows the fastening block 2 to rotate around the rotating shaft 31.

[0044] like Figure 4 — Figure 9As shown, the buffer mechanism 4 includes a buffer base 41, on which two sliding columns 411 are fixedly connected. The buffer mechanism 4 is installed in the buffer mechanism limiting groove 12, and its sliding columns 411 are slidably connected to the sliding groove 13. The buffer mechanism 4 is composed of a buffer base 41, rollers 42, and buffer springs 43. Two sliding columns 411 are fixedly connected to the buffer base 41, and the buffer base 41 has a rolling groove 412. There are several rollers 42, which are fixedly connected to the rolling groove 412 through a rotating shaft and can rotate. There are several buffer springs 43, which are fixedly connected to the buffer base 41.

[0045] like Figure 4 — Figure 9 As shown, the locking mechanism 5 is detachably connected to the hook base 1 and the fastening block 2; the locking mechanism 5 passes through the first connecting hole 14 and the third connecting hole 21 and is detachably connected to the hook base 1 and the fastening block 2. The locking mechanism 5 consists of a locking cylinder 51 and a locking stud 52. The locking cylinder 51 has internal threads, and the locking stud 52 has external threads that match the locking cylinder 51.

[0046] like Figure 4 — Figure 9 As shown, the limiting mechanism 6 consists of a fixing plate 61 and fixing bolts 62. The fixing plate 61 is mounted on the hook base 1 by two fixing bolts 62, and its function is to limit the movement of the fastening block 2. When the fastening block 2 is fastened to the hook base 1, the limiting mechanism 6 can restrict the rotation of the fastening block 2, forming a double safety mechanism with the locking mechanism 5 to prevent disengagement if the locking mechanism 5 is damaged, thus ensuring the stability and safety of the mine car connection.

[0047] The specific usage process of this utility model is as follows:

[0048] All components of this utility model are prefabricated and manufactured in the factory. Figure 7 — Figure 9 Complete assembly and press Figure 1 They are welded onto the tractor 8 and the tipper ore truck 7, respectively.

[0049] Furthermore, such as Figure 2 As shown, the fastening blocks 2 on the tractor 8 and the tipper mine car 7 are opened outward and fitted onto the connecting post 71 of the tipper mine car 7. Then, the locking cylinder 51 and the locking stud 52 are passed through the first connecting hole 14 and the third connecting hole 21 in sequence and tightened to close the hook and lock the position of the fastening block 2.

[0050] Furthermore, such as Figure 3 As shown, the fixing plate 61 is tightened and fixed using the fixing bolts 62 to further restrict the position of the fastening block 2.

[0051] Finally, as Figure 1As shown, this utility model can be put into production.

Claims

1. A connecting hook for a tipper-type mining car, characterized in that, The hook consists of a hook base (1), a fastening block (2), a rotating shaft assembly (3), a buffer mechanism (4), a locking mechanism (5), and a limiting mechanism (6); The upper end of the hook base (1) has a connecting part (11) for fixing and connecting a tipper mine car (7) or a tractor (8). The hook base (1) is provided with a buffer mechanism limiting groove (12) and two sliding grooves (13). One end of the fastening block (2) is rotatably connected to the hook base (1) via a rotating shaft assembly (3), and the other end is detachably connected to the hook base (1) via a locking mechanism (5); The rotating shaft assembly (3) is detachably connected to the fastening block (2) and the hook base (1); The buffer mechanism (4) includes a buffer base (41), two sliding columns (411) are fixedly connected on the buffer base (41), the buffer mechanism (4) is installed in the buffer mechanism limiting groove (12), and its sliding columns (411) are slidably connected to the sliding groove (13). The locking mechanism (5) is detachably connected to the hook base (1) and the fastening block (2); The limiting mechanism (6) is detachably connected to the hook base (1) and is used to limit the locking block (2).

2. The tipper-type ore car connecting hook according to claim 1, characterized in that, The hook base (1) has two first connecting holes (14) and the fastening block (2) has two third connecting holes (21). The first connecting holes (14) and the third connecting holes (21) are shaped to match the locking mechanism (5). The locking mechanism (5) passes through the first connecting holes (14) and the third connecting holes (21) and is detachably connected to the hook base (1) and the fastening block (2).

3. The tipper-type ore car connecting hook according to claim 1, characterized in that, The hook base (1) has two second connecting holes (15), and the fastening block (2) has two fourth connecting holes (23). The second connecting holes (15) and the fourth connecting holes (22) are shaped to match the rotating shaft assembly (3). The rotating shaft assembly (3) passes through the second connecting holes (15) and the fourth connecting holes (22) and is detachably connected to the hook base (1) and the fastening block (2).

4. The tipper-type ore car connecting hook according to claim 1, characterized in that, The rotating shaft assembly (3) consists of a rotating shaft (31), a limiting spring (32), and a limiting nut (33); The rotating shaft (31) has a cylindrical structure, with a nut fixedly connected to one end and a thread on the other end; There are two limiting springs (32), which are threaded onto the rotating shaft (31); The limiting nut (33) is threaded to the rotating shaft (31).

5. A connecting hook for a tipper-type mining car according to claim 1, characterized in that, The buffer mechanism (4) consists of a buffer base (41), rollers (42), and buffer springs (43); Two sliding columns (411) are fixedly connected to the buffer base (41), and the buffer base (41) has a roller groove (412); There are several rollers (42), which are fixedly connected to the groove (412) by a rotating shaft and can rotate; Several buffer springs (43) are fixedly connected to the buffer base (41).

6. The tipper mine car connecting hook according to claim 1, characterized in that, The locking mechanism (5) consists of a locking cylinder (51) and a locking stud (52). The locking cylinder (51) has an internal thread, and the locking stud (52) has an external thread that matches the locking cylinder (51).

7. A connecting hook for a tipper-type mining car according to claim 1, characterized in that, The limiting mechanism (6) consists of a fixing plate (61) and fixing bolts (62). The fixing plate (61) is detachably connected to the hook base (1) by two fixing bolts (62).

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