Ore loading and unloading grab bucket

Abstract

The invention discloses an ore loading and unloading grab bucket, and relates to the technical field of ore production. The hopper comprises a pair of symmetrically arranged hopper bodies and a supporting base arranged between the two hopper bodies. Rotating shafts are horizontally and fixedly inserted into the upper parts of the two hopper bodies; the two rotating shafts are rotationally connected to the opposite side edges of the supporting base correspondingly. The bottom edge of a hopper opening of the hopper body is fixedly wrapped with a first bearing piece. A plurality of first wear-resistant parts are arranged on the first bearing part side by side; any two adjacent first wear-resistant parts abut against each other. The two side edges of a hopper opening of the hopper body are fixedly wrapped with second bearing pieces. And second wear-resistant parts are arranged on the two second bearing parts. The grab bucket is reasonable in structural design and convenient to use, and the service life of the grab bucket is effectively prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of ore production, and particularly relates to an ore loading and unloading grab bucket. Background Art

[0002] At port terminals, when loading and unloading bulk goods from cargo ships, especially when loading and unloading ores, grab buckets are often used. Due to busy operations and high utilization rates of grab buckets, frequent operations cause relatively large wear on grab buckets, especially on the bottom and sides of grab buckets, which is particularly serious. Therefore, in the prior art, grab buckets need to be frequently repaired or replaced, which not only results in a low service life of grab buckets, high usage costs, but also affects the ore loading and unloading operation efficiency. Therefore, there is an urgent need to study an ore loading and unloading grab bucket to solve the above problems. Summary of the Invention

[0003] The present invention aims to provide an ore loading and unloading grab bucket, and its purpose is to solve the technical problems raised in the above background art.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0005] The present invention provides an ore loading and unloading grab bucket, which includes a pair of symmetrically arranged bucket bodies and a support seat arranged between the two bucket bodies; rotating shafts are horizontally and fixedly inserted through the upper parts of the two bucket bodies; the two rotating shafts are respectively rotatably connected to the opposite side edges of the support seat; a first bearing member is fixedly wrapped around the bottom edge of the bucket mouth of the bucket body; a plurality of first wear-resistant members are arranged side by side on the first bearing member; any two adjacent first wear-resistant members are in contact with each other; second bearing members are fixedly wrapped around both side edges of the bucket mouth of the bucket body; second wear-resistant members are arranged on the two second bearing members.

[0006] As a preferred technical solution of the present invention, a plurality of first accommodation holes are arranged side by side along the length direction on the bottom edge of the bucket mouth of the bucket body; the first bearing member includes a first bearing strip and a second bearing strip arranged in parallel; one side edge of the first bearing strip and one side edge of the second bearing strip are connected by a plurality of bearing blocks arranged side by side; a plurality of first through holes corresponding to the first accommodation holes are arranged side by side on the opposite side surfaces of the first bearing strip and the second bearing strip, and a plurality of first studs corresponding to the first through holes are arranged side by side between the first bearing strip and the second bearing strip; the first studs are inserted through the corresponding first accommodation holes, and both ends of the first studs are respectively inserted through the first through holes on the first bearing strip and the second bearing strip.

[0007] As a preferred technical solution of the present invention, the first wear-resistant member includes a wear-resistant block; an installation groove corresponding to the bearing block is formed on one side surface of the wear-resistant block; the bearing block can be slidably inserted into the installation groove; a positioning member for locking the wear-resistant block on the bearing block is installed on the bearing block.

[0008] As a preferred technical solution of the present invention, a receiving cavity is formed inside the bearing block, and second through holes communicating with the receiving cavity are formed on opposite side surfaces of the bearing block; third through holes corresponding to the second through holes are formed on opposite side surfaces of the installation groove; the positioning member includes a pair of positioning columns coaxially arranged in the receiving cavity; one ends of the two positioning columns can respectively slide through the two second through holes and are respectively slidably inserted into the two third through holes; convex discs are fixed to the other ends of the two positioning columns; the two convex discs are slidably fitted in the receiving cavity; tension springs are fixed to opposite outer side surfaces of the two convex discs; the two tension springs are respectively sleeved on the outer circumferences of the two positioning columns; one ends of the two tension springs are respectively fixed to opposite side surfaces of the receiving cavity.

[0009] As a preferred technical solution of the present invention, a rotating column perpendicular to the positioning column is arranged between the two convex discs; one end of the rotating column is rotatably connected to the inner wall of the receiving cavity; a pair of pull ropes are wound around the rotating column; one ends of the two pull ropes are respectively fixed to opposite inner side surfaces of the two convex discs.

[0010] As a preferred technical solution of the present invention, a fourth through hole communicating with the receiving cavity is formed on one side surface of the bearing block; the central axis of the fourth through hole is perpendicular to the central axis of the first through hole; a fifth through hole communicating with the installation groove is formed on the other side surface of the wear-resistant block; when the bearing block is slidably inserted into the installation groove, the fifth through hole is coaxially arranged with the adjacent fourth through hole; the other end portion of the rotating column is rotatably connected to the fourth through hole.

[0011] As a preferred technical solution of the present invention, retaining pieces parallel to the first bearing strip are fixed to opposite edges of one side surface of the wear-resistant block; when the bearing block is slidably inserted into the installation groove, the two retaining pieces are respectively arranged on the outer sides of the first bearing strip and the second bearing strip, and opposite inner side surfaces of the two retaining pieces respectively abut against both ends of the first stud.

[0012] As a preferred technical solution of the present invention, a plurality of second accommodating holes are arranged side by side along the length direction on the side edge of the bucket mouth of the bucket body; the second supporting member includes a third supporting bar; a accommodating groove is arranged on one side edge of the third supporting bar along the length direction; the accommodating groove respectively passes through the two ends of the third supporting bar; the accommodating groove can slide with the side edge of the bucket mouth of the bucket body; a avoidance notch connected to the accommodating groove is arranged on the side edge of the lower end portion of the accommodating groove; the avoidance notch can slide with the bottom edge of the bucket mouth of the bucket body; a plurality of sixth through holes corresponding to the second accommodating holes are arranged side by side on the opposite sides of the accommodating groove, and a plurality of second studs corresponding to the sixth through holes are arranged side by side on the inner side of the accommodating groove; the second studs are inserted in the corresponding second accommodating holes, and the two ends of the second studs are respectively inserted in the sixth through holes on the opposite sides of the accommodating groove.

[0013] As a preferred technical solution of the present invention, a guide strip is fixed on the other side surface of the third bearing bar along the length direction; a seventh through hole connected to the accommodating groove is formed on a side surface of the guide bar away from the third bearing bar; the seventh through hole is arranged on the upper end portion of the guide bar; the second wear-resistant part includes a wear-resistant strip parallel to the third bearing bar; a through groove is formed on one side surface of the wear-resistant strip; the through groove passes through the two ends of the wear-resistant strip respectively; the through groove can slide with the third bearing bar; a limiting groove corresponding to the guide strip is formed on the middle surface of the through groove along the length direction; the limiting groove passes through the two ends of the wear-resistant strip respectively; the limiting groove can slide with the guide bar; an eighth through hole corresponding to the seventh through hole is formed on a side surface of the upper end portion of the limiting groove; a third stud is inserted in the eighth through hole; one end of the third stud is inserted in the seventh through hole.

[0014] The present invention has the following beneficial effects:

[0015] The present invention fixes and wraps a first bearing member on the bottom edge of the bucket mouth of the bucket body, and installs a plurality of first wear-resistant members side by side on the first bearing member, and any two adjacent first wear-resistant members are arranged in abutment with each other, and then fixes and wraps a second bearing member on both sides of the bucket mouth of the bucket body, and then installs a second wear-resistant member on the second bearing member. This not only effectively improves the wear resistance of the bottom edge and side edges of the bucket mouth of the bucket body, but also extends the service life of the bucket body, effectively ensuring the efficiency of ore loading and unloading operations.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a kind of ore loading and unloading grab of the present invention.

[0019] Figure 2 It is a schematic diagram of the relative positions among the bucket body, the first bearing member and the second bearing member of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the connection among the bucket body, the first bearing member and the first wear-resistant member of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the connection between the first bearing member and the first wear-resistant member of the present invention.

[0022] Figure 5 It is a schematic structural diagram of the first bearing member of the present invention.

[0023] Figure 6 It is a schematic structural diagram of the first wear-resistant member of the present invention.

[0024] Figure 7 It is a schematic structural diagram of the connection among the bucket body, the second bearing member and the second wear-resistant member of the present invention.

[0025] Figure 8 It is a schematic diagram of the relative positions between the second bearing member and the second wear-resistant member of the present invention.

[0026] Figure 9 It is a schematic structural diagram of the second bearing member of the present invention.

[0027] Figure 10 It is a schematic structural diagram of the second wear-resistant member of the present invention.

[0028] Figure 11 It is a schematic structural diagram of the positioning member arranged on the first bearing member of the present invention.

[0029] Figure 12 It is a schematic structural diagram of the positioning member of the present invention.

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] 1 - Hopper body, 2 - Support base, 3 - Rotating shaft, 4 - First bearing member, 5 - First wear-resistant member, 6 - Second bearing member, 7 - Second wear-resistant member, 8 - Positioning member, 101 - First receiving hole, 102 - Second receiving hole, 401 - First bearing strip, 402 - Second bearing strip, 403 - Bearing block, 404 - First through hole, 405 - First stud, 406 - Accommodation chamber, 407 - Second through hole, 408 - Fourth through hole, 501 - Wear-resistant block, 502 - Installation groove, 503 - Third through hole, 504 - Fifth through hole, 505 - Flap, 601 - Third bearing strip, 602 - Accommodation groove, 603 - Avoidance notch, 604 - Sixth through hole, 605 - Second stud, 606 - Guide strip, 607 - Seventh through hole, 701 - Wear-resistant strip, 702 - Through groove, 703 - Limiting groove, 704 - Eighth through hole, 705 - Third stud, 801 - Positioning post, 802 - Convex disc, 803 - Tension spring, 804 - Rotating post, 805 - Pulling rope. Detailed implementation manners

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] Please refer to Figure 1-2As shown in the figure, the present invention is an ore loading and unloading grab, which includes a pair of symmetrically arranged bucket bodies 1 and a support seat 2 arranged between the two bucket bodies 1; the upper parts of the two bucket bodies 1 are horizontally and fixedly penetrated with rotating shafts 3; the two rotating shafts 3 are respectively rotatably connected to the opposite side edges of the support seat 2; the bottom edge of the bucket mouth of the bucket body 1 is fixedly wrapped with a first bearing member 4; a plurality of first wear-resistant members 5 are arranged side by side on the first bearing member 4; any two adjacent first wear-resistant members 5 are in contact with each other; the two side edges of the bucket mouth of the bucket body 1 are fixedly wrapped with second bearing members 6; second wear-resistant members 7 are arranged on the two second bearing members 6. When in use, by fixedly wrapping the first bearing member 4 at the bottom edge of the bucket mouth of the bucket body 1, arranging a plurality of first wear-resistant members 5 side by side on the first bearing member 4, and making any two adjacent first wear-resistant members 5 in contact with each other, then fixedly wrapping the second bearing members 6 on both side edges of the bucket mouth of the bucket body 1, and then arranging the second wear-resistant members 7 on the second bearing members 6, not only effectively improves the wear resistance of the bottom edge and side edges of the bucket mouth of the bucket body 1, but also extends the service life of the bucket body 1, effectively ensuring the ore loading and unloading operation efficiency; in addition, when the first wear-resistant member 5 or the second wear-resistant member 7 is severely worn, by disassembling and replacing the new first wear-resistant member 5 or the second wear-resistant member 7, the use efficiency of the bucket body 1 can be ensured, and at the same time, the use cost of the bucket body 1 is reduced.

[0035] Embodiment Two:

[0036] On the basis of Embodiment One, as Figure 2-6As shown, a plurality of first receiving holes 101 are arranged side by side along the length direction of the upper edge of the bottom of the bucket opening of the bucket body 1; the first carrier 4 includes a first carrier bar 401 and a second carrier bar 402 arranged in parallel; one side of the first carrier bar 401 and one side of the second carrier bar 402 are connected by a plurality of carrier blocks 403 arranged side by side, and the carrier blocks 403 are welded to one side of the first carrier bar 401 and one side of the second carrier bar 402; a plurality of first through holes 404 corresponding to the first receiving holes 101 are arranged side by side on the opposite side surfaces of the first carrier bar 401 and the second carrier bar 402, and a plurality of first studs 405 corresponding to the first through holes 404 are arranged side by side between the first carrier bar 401 and the second carrier bar 402; the first studs 405 are inserted into the corresponding first receiving holes 101, and both ends of the first studs 405 are respectively inserted into the first through holes 404 on the first carrier bar 401 and the second carrier bar 402; the first studs 405 are in threaded cooperation with the first receiving holes 101 and the first through holes 404 respectively; the first wear-resistant member 5 includes a wear-resistant block 501; an installation groove 502 corresponding to the carrier block 403 is formed on one side surface of the wear-resistant block 501; the carrier block 403 can be slidably inserted into the installation groove 502; a positioning member 8 for locking the wear-resistant block 501 on the carrier block 403 is installed on the carrier block 403. During use, by first arranging the first carrier bar 401 and the second carrier bar 402 on the upper and lower sides of the bottom of the bucket opening of the bucket body 1, and then respectively threading the first studs 405 into the first receiving holes 101 and the first through holes 404, the first carrier 4 is stably and quickly connected to the bottom of the bucket opening of the bucket body 1. Then, the installation grooves 502 of the plurality of wear-resistant blocks 501 are respectively slidably engaged with the plurality of carrier blocks 403, and the opposite side surfaces of two adjacent wear-resistant blocks 501 are in contact with each other. Then, the wear-resistant blocks 501 are locked on the carrier blocks 403 by using the positioning member 8, so that not only the first wear-resistant member 5 is detachably installed on the first carrier 4, but also the installation stability of the first wear-resistant member 5 is effectively improved.

[0037] Among them, as Figure 3-4 and Figure 6As shown, on one side of the wear-resistant block 501, baffle plates 505 parallel to the first load-bearing bar 401 are welded to the relative edges; after the load-bearing block 403 is slidably inserted into the installation groove 502, the two baffle plates 505 are respectively arranged on the relative outer sides of the first load-bearing bar 401 and the second load-bearing bar 402, and the relative inner sides of the two baffle plates 505 are respectively in contact with both ends of the first stud 405. During use, after the load-bearing block 403 is slidably inserted into the installation groove 502, the two baffle plates 505 are respectively arranged on the relative outer sides of the first load-bearing bar 401 and the second load-bearing bar 402, and the relative inner sides of the two baffle plates 505 are respectively in contact with both ends of the first stud 405, thereby realizing the shielding of the end part of the first stud 405, avoiding the end part of the first stud 405 from being worn by ore, and effectively improving the connection stability between the first load-bearing member 4 and the bucket body 1.

[0038] Among them, as Figure 3 , Figure 5-6 and Figure 11-12 shown, an accommodation chamber 406 is formed inside the load-bearing block 403, and second through holes 407 communicating with the accommodation chamber 406 are formed on the relative sides of the load-bearing block 403; third through holes 503 corresponding to the second through holes 407 are formed on the relative sides of the installation groove 502; the positioning member 8 includes a pair of positioning posts 801 coaxially arranged inside the accommodation chamber 406; one ends of the two positioning posts 801 can respectively slide through the two second through holes 407 and be respectively slidably inserted into the two third through holes 503; convex discs 802 are welded to the other ends of the two positioning posts 801; the two convex discs 802 are both slidably fitted inside the accommodation chamber 406; tension springs 803 are welded to the relative outer sides of the two convex discs 802; the two tension springs 803 are respectively sleeved on the outer circumferences of the two positioning posts 801; one ends of the two tension springs 803 are respectively welded to the relative sides of the accommodation chamber 406. During use, after the load-bearing block 403 is slidably inserted into the installation groove 502, the second through holes 407 and the third through holes 503 are coaxially arranged, and then by sliding one end of the positioning post 801 through the second through hole 407 and slidably inserting it into the third through hole 503, the wear-resistant block 501 is locked inside the load-bearing block 403, and at the same time, the elasticity of the tension spring 803 is used to prevent the positioning post 801 from moving randomly, effectively improving the connection stability between the first wear-resistant member 5 and the first load-bearing member 4.

[0039] In addition, as Figure 3 , Figure 5-6 and Figure 11-12As shown, a rotating column 804 perpendicular to the positioning column 801 is arranged between two convex discs 802; one end of the rotating column 804 is rotatably connected to the inner wall of the accommodating chamber 406; a pair of pulling ropes 805 are wound around the rotating column 804; one ends of the two pulling ropes 805 are respectively screwed to the opposite inner side surfaces of the two convex discs 802; a fourth through hole 408 communicating with the accommodating chamber 406 is formed in one side surface of the bearing block 403; the central axis of the fourth through hole 408 is perpendicularly arranged to the central axis of the first through hole 404; a fifth through hole 504 communicating with the installation groove 502 is formed in the other side surface of the wear-resistant block 501; after the bearing block 403 is slidably inserted into the installation groove 502, the fifth through hole 504 is coaxially arranged with the adjacent fourth through hole 408; the other end of the rotating column 804 is rotatably connected to the fourth through hole 408; the diameter of the fifth through hole 504 is slightly larger than that of the fourth through hole 408. During use, a screwdriver (the diameter of the fourth through hole 408 is twice the diameter of the screwdriver) is used to rotate the rotating column 804, so that the two pulling ropes 805 are synchronously wound around the rotating column 804, realizing that the pulling ropes 805 pull the two positioning columns 801 to approach each other, thereby moving one end of the positioning column 801 out of the third through hole 503, then slightly pulling the wear-resistant block 501 outwards to cause the third through hole 503 and the fourth through hole 408 to be misaligned, and then the wear-resistant block 501 can be removed from the bearing block 403 after removing the screwdriver; when the wear-resistant block 501 needs to be installed, first slide a part of the bearing block 403 into the installation groove 502, and then use a screwdriver to rotate the rotating column 804, so that the two pulling ropes 805 are synchronously wound around the rotating column 804, realizing that the pulling ropes 805 pull the two positioning columns 801 to approach each other, thereby moving one end of the positioning column 801 into the fourth through hole 408, then completely slide the bearing block 403 into the installation groove 502 to make the third through hole 503 and the fourth through hole 408 coaxially arranged, and then after removing the screwdriver, one end of the positioning column 801 slides through the second through hole 407 under the elastic action of the tension spring 803 and is slidably inserted into the third through hole 503, thereby locking the wear-resistant block 501 in the bearing block 403, effectively improving the installation efficiency of the first wear-resistant member 5.

[0040] Embodiment 3:

[0041] On the basis of Embodiment 2, as shown in Figure 2 and Figure 7-10As shown in the figure, a plurality of second receiving holes 102 are arranged side by side along the length direction of the side edge of the bucket opening of the bucket body 1; the second carrier 6 includes a third carrier bar 601; a receiving groove 602 is formed along the length direction on one side surface of the third carrier bar 601; the receiving groove 602 penetrates through both ends of the third carrier bar 601; the receiving groove 602 can be slidably matched with the side edge of the bucket opening of the bucket body 1; an avoidance notch 603 communicating with the receiving groove 602 is formed on the side surface of the lower end of the receiving groove 602; the avoidance notch 603 can be slidably matched with the bottom edge of the bucket opening of the bucket body 1; a plurality of sixth through holes 604 corresponding to the second receiving holes 102 are arranged side by side on the opposite side surfaces of the receiving groove 602, and a plurality of second stud bolts 605 corresponding to the sixth through holes 604 are arranged side by side inside the receiving groove 602; the second stud bolts 605 are inserted into the corresponding second receiving holes 102, and both ends of the second stud bolts 605 are respectively inserted into the sixth through holes 604 on the opposite side surfaces of the receiving groove 602; the second stud bolts 605 are in threaded cooperation with the second receiving holes 102 and the sixth through holes 604 respectively; a guiding bar 606 is welded along the length direction on the other side surface of the third carrier bar 601; a seventh through hole 607 communicating with the receiving groove 602 is formed on the side surface of the guiding bar 606 away from the third carrier bar 601; the seventh through hole 607 is arranged at the upper end of the guiding bar 606; the second wear-resistant member 7 includes a wear-resistant bar 701 parallel to the third carrier bar 601; a through groove 702 is formed on one side surface of the wear-resistant bar 701; the through groove 702 penetrates through both ends of the wear-resistant bar 701; the through groove 702 can be slidably matched with the third carrier bar 601; a limiting groove 703 corresponding to the guiding bar 606 is formed along the length direction on the middle surface of the through groove 702; the limiting groove 703 penetrates through both ends of the wear-resistant bar 701; the limiting groove 703 can be slidably matched with the guiding bar 606; an eighth through hole 704 corresponding to the seventh through hole 607 is formed on one side surface of the upper end of the limiting groove 703; a third stud bolt 705 is inserted into the eighth through hole 704; one end of the third stud bolt 705 is inserted into the seventh through hole 607; the third stud bolt 705 is in threaded cooperation with the seventh through hole 607 and the eighth through hole 704 respectively. During use, by slidably matching the receiving groove 602 with the side edge of the bucket opening of the bucket body 1 and slidably matching the avoidance notch 603 with the bottom edge of the bucket opening of the bucket body 1, and then using the second stud bolts 605 to be in threaded cooperation with the second receiving holes 102 and the sixth through holes 604 respectively, the second carrier 6 is fixedly wrapped on the side edge of the bucket opening of the bucket body 1, and then the limiting groove 703 is slidably matched with the guiding bar 606, and then the third stud bolts 705 are in threaded cooperation with the seventh through hole 607 and the eighth through hole 704 respectively, so that the second wear-resistant member 7 is stably connected to the second carrier 6, effectively improving the service life of the bottom edge of the bucket opening of the bucket body 1.

[0042] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An ore loading and unloading grab, comprising a pair of symmetrically arranged bucket bodies (1) and a support base (2) arranged between the two bucket bodies (1); the upper parts of the two bucket bodies (1) are horizontally and fixedly penetrated by rotating shafts (3); the two rotating shafts (3) are respectively rotatably connected to the opposite side edges of the support base (2); characterized in that : The bottom edge of the bucket opening of the bucket body (1) is fixedly wrapped with a first bearing member (4); a plurality of first wear-resistant members (5) are arranged side by side on the first bearing member (4); any two adjacent first wear-resistant members (5) are in contact with each other; both side edges of the bucket opening of the bucket body (1) are fixedly wrapped with second bearing members (6); second wear-resistant members (7) are arranged on both of the second bearing members (6).

2. The ore handling grab according to claim 1, wherein, A plurality of first receiving holes (101) are arranged side by side along the length direction on the upper edge of the bottom of the bucket opening of the bucket body (1); the first bearing member (4) includes a first bearing strip (401) and a second bearing strip (402) which are arranged in parallel; one side edge of the first bearing strip (401) and one side edge of the second bearing strip (402) are connected by a plurality of bearing blocks (403) arranged side by side; a plurality of first through holes (404) corresponding to the first receiving holes (101) are arranged side by side on the opposite side surfaces of the first bearing strip (401) and the second bearing strip (402), and a plurality of first studs (405) corresponding to the first through holes (404) are arranged side by side between the first bearing strip (401) and the second bearing strip (402); the first studs (405) are inserted into the corresponding first receiving holes (101), and both ends of the first studs (405) are respectively inserted into the first through holes (404) on the first bearing strip (401) and the second bearing strip (402).

3. The ore handling grab according to claim 2, characterized in that, The first wear-resistant member (5) includes a wear-resistant block (501); an installation groove (502) corresponding to the bearing block (403) is formed on one side surface of the wear-resistant block (501); the bearing block (403) can be slidably inserted into the installation groove (502); a positioning member (8) for locking the wear-resistant block (501) on the bearing block (403) is arranged on the bearing block (403).

4. The ore handling grab according to claim 3, characterized in that, An accommodation chamber (406) is formed inside the bearing block (403), and second through holes (407) communicating with the accommodation chamber (406) are formed on the opposite side surfaces of the bearing block (403); third through holes (503) corresponding to the second through holes (407) are formed on the opposite side surfaces of the installation groove (502); the positioning member (8) includes a pair of positioning columns (801) coaxially arranged in the accommodation chamber (406); one ends of the two positioning columns (801) can respectively slide through the two second through holes (407) and be respectively slidably inserted into the two third through holes (503); convex discs (802) are fixed at the other ends of the two positioning columns (801); both of the convex discs (802) are slidably fitted in the accommodation chamber (406); tension springs (803) are fixed on the opposite outer side surfaces of the two convex discs (802); the two tension springs (803) are respectively sleeved on the outer circumferences of the two positioning columns (801); one ends of the two tension springs (803) are respectively fixed on the opposite side surfaces of the accommodation chamber (406).

5. The ore handling grab according to claim 4, characterized in that, A rotating column (804) perpendicular to the positioning column (801) is arranged between the two convex discs (802); one end of the rotating column (804) is rotatably connected to the inner wall of the accommodating chamber (406); a pair of pulling ropes (805) are wound around the rotating column (804); one ends of the two pulling ropes (805) are respectively fixed to the opposite inner side surfaces of the two convex discs (802).

6. The ore loading and unloading grab according to claim 5, characterized in that A fourth through hole (408) communicating with the accommodating chamber (406) is formed in one side surface of the bearing block (403); the central axis of the fourth through hole (408) is perpendicular to the central axis of the first through hole (404); a fifth through hole (504) communicating with the installation groove (502) is formed in the other side surface of the wear-resistant block (501); when the bearing block (403) is slidably inserted into the installation groove (502), the fifth through hole (504) is coaxially arranged with the adjacent fourth through hole (408); the other end of the rotating column (804) is rotatably connected to the fourth through hole (408).

7. An ore handling grab according to claim 5 or 6, characterized in that, Flap pieces (505) parallel to the first bearing strip (401) are respectively fixed to the opposite edges of one side surface of the wear-resistant block (501); when the bearing block (403) is slidably inserted into the installation groove (502), the two flap pieces (505) are respectively arranged on the opposite outer sides of the first bearing strip (401) and the second bearing strip (402), and the opposite inner side surfaces of the two flap pieces (505) are respectively in contact with the two ends of the first stud (405).

8. The ore handling grab according to claim 7, characterized in that, A plurality of second receiving holes (102) are arranged side by side along the length direction of the side edge of the bucket opening of the bucket body (1); the second bearing member (6) includes a third bearing strip (601); a receiving groove (602) is formed in one side surface of the third bearing strip (601) along the length direction; the receiving groove (602) penetrates through both ends of the third bearing strip (601); the receiving groove (602) can be slidably matched with the side edge of the bucket opening of the bucket body (1); an avoidance notch (603) communicating with the receiving groove (602) is formed in the side surface of the lower end of the receiving groove (602); the avoidance notch (603) can be slidably matched with the bottom edge of the bucket opening of the bucket body (1); a plurality of sixth through holes (604) corresponding to the second receiving holes (102) are arranged side by side on the opposite side surfaces of the receiving groove (602), and a plurality of second studs (605) corresponding to the sixth through holes (604) are arranged side by side inside the receiving groove (602); the second studs (605) are inserted into the corresponding second receiving holes (102), and both ends of the second studs (605) are respectively inserted into the sixth through holes (604) on the opposite side surfaces of the receiving groove (602).

9. The ore handling grab according to claim 8, wherein On the other side surface of the third load-bearing strip (601), a guiding strip (606) is fixed along the length direction; on the side surface of the guiding strip (606) away from the third load-bearing strip (601), a seventh through hole (607) communicating with the accommodating groove (602) is formed; the seventh through hole (607) is arranged at the upper end part of the guiding strip (606); the second wear-resistant member (7) includes a wear-resistant strip (701) parallel to the third load-bearing strip (601); a through groove (702) is formed on one side surface of the wear-resistant strip (701); the through groove (702) penetrates through both ends of the wear-resistant strip (701) respectively; the through groove (702) can be in sliding fit with the third load-bearing strip (601); a limiting groove (703) corresponding to the guiding strip (606) is formed on the middle surface of the through groove (702) along the length direction; the limiting groove (703) penetrates through both ends of the wear-resistant strip (701) respectively; the limiting groove (703) can be in sliding fit with the guiding strip (606); on one side surface of the upper end part of the limiting groove (703), an eighth through hole (704) corresponding to the seventh through hole (607) is formed; a third stud (705) is inserted into the eighth through hole (704); one end of the third stud (705) is inserted into the seventh through hole (607).

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