Large arm locking device of carry-scraper

Abstract

The utility model provides a carry-scraper big arm locking device which comprises a fixing plate, and an inserting hole is transversely formed in the upper middle side of the interior of the fixing plate. A rectangular groove is further formed in the upper middle side of the interior of the fixing plate, and the rectangular groove communicates with the insertion hole. The middle upper side of the left part of the fixing plate is integrally connected with a fixing sleeve, and the fixing sleeve is buckled on the outer side of the insertion hole; an opening in the upper left side of the fixing sleeve is in threaded connection with a fastening bolt, and the device is characterized in that an induction type limiting assembly is inserted into the fixing sleeve, and an insertion hole further penetrates through the right side of the induction type limiting assembly; the fixing sleeve is connected with the induction type limiting assembly in a fastened mode through a fastening bolt. Due to the arrangement of the baffle, the pin body, the travel switch and the induction block, the induction locking effect can be achieved, when the pin body is inserted into the limiting hole, the large arm of the carry-scraper cannot be controlled, and therefore the problem that the carry-scraper is damaged due to misoperation can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of scraper loaders, and in particular relates to a large arm locking device for scraper loaders. Background Art

[0002] The arm locking device of a scraper loader is a structure that can lock the arm of the scraper loader, which can avoid the problem of the arm suddenly dropping during the maintenance of the scraper loader. For example, a scraper loader arm locking device with publication number CN216379690U includes: a fixing hole arranged on the frame, a limiting pin is matched in the fixing hole, and also includes a limiting hole arranged on the arm, and the limiting hole is arranged to be coaxial with the limiting pin in the fixing hole when the arm is lifted. There are still some problems with the locking device during actual use, such as: when the pin body is inserted into the limiting hole on the arm, the arm of the scraper loader can still be manually controlled, so when the operator forgets to pull the pin body out of the limiting hole, the scraper loader may be seriously damaged after it is moved. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the utility model provides a scraper loader boom locking device, which can achieve the effect of induction locking. When the pin body is inserted into the limit hole, the scraper loader boom cannot be controlled, thereby avoiding the problem of damage caused by misoperation of the scraper loader.

[0004] The technical solution is as follows: a locking device for the upper arm of a scraper loader comprises a fixing plate, a socket is transversely provided on the inner middle upper side of the fixing plate; a rectangular groove is also provided on the inner middle upper side of the fixing plate, and the rectangular groove is communicated with the socket; a fixing sleeve is integrally connected to the left middle upper side of the fixing plate, and the fixing sleeve is buckled on the outer side of the socket; a fastening bolt is threadedly connected to the upper left opening of the fixing sleeve, and is characterized in that an inductive limit assembly is inserted into the interior of the fixing sleeve, and the right side of the inductive limit assembly also passes through the socket; the fixing sleeve is fastened and connected to the inductive limit assembly by a fastening bolt.

[0005] Preferably, the inductive limit assembly includes a baffle, a handle is fixedly connected to the middle left part of the baffle; a pin body is fixedly connected to the middle right part of the baffle, and an installation groove is opened on the inner right front side of the pin body, wherein a guide groove is also opened on the inner upper side of the pin body; a travel switch is fixedly connected to the middle inner rear part of the installation groove, and the upper end of the contact of the travel switch slides through the interior of the pin body and extends to the inner lower side of the guide groove; an induction block is slidably arranged inside the guide groove, and the lower middle part of the induction block is fixedly connected to the upper end of the contact of the travel switch.

[0006] Compared with the prior art, the beneficial effects of the utility model are:

[0007] In the utility model, the arrangement of the baffle, the pin body, the travel switch and the induction block is conducive to achieving the effect of induction locking. When the pin body is inserted into the limit hole, the arm of the scraper loader cannot be controlled, thereby avoiding the problem of damage caused by misoperation of the scraper loader. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model.

[0009] Figure 2 It is a structural schematic diagram of the inductive limiter assembly of the utility model.

[0010] Figure 3 It is a structural schematic diagram of another state of the utility model.

[0011] In the figure:

[0012] 1. Fixed plate; 2. Fixed sleeve; 3. Fastening bolt; 4. Inductive limit assembly; 41. Baffle; 42. Handle; 43. Pin body; 44. Travel switch; 45. Induction block. DETAILED DESCRIPTION

[0013] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1 and attached Figure 2 As shown, a locking device for the upper arm of a scraper loader includes a fixing plate 1, a plug hole is horizontally opened on the inner middle upper side of the fixing plate 1; a rectangular groove is also opened on the inner middle upper side of the fixing plate 1, and the rectangular groove is communicated with the plug hole; a fixing sleeve 2 is integrally connected to the left middle upper side of the fixing plate 1, and the fixing sleeve 2 is buckled on the outer side of the plug hole; a fastening bolt 3 is threadedly connected to the upper left opening of the fixing sleeve 2.

[0014] One of the locking devices for the arm of a scraper loader also includes an inductive limit assembly 4, and the inductive limit assembly 4 is inserted into the interior of a fixed sleeve 2; a plug hole also runs through the right side of the inductive limit assembly 4; the fixed sleeve 2 is fastened and connected to the inductive limit assembly 4 by a fastening bolt 3, which is conducive to achieving the effect of inductive locking. When the pin body 43 is inserted into the limit hole, the arm of the scraper loader cannot be controlled, thereby avoiding the problem of damage caused by misoperation of the scraper loader.

[0015] Among them, the inductive limit assembly 4 includes a baffle 41, and a handle 42 is fixedly connected to the middle part of the left part of the baffle 41; a pin body 43 is fixedly connected to the middle part of the right part of the baffle 41, and an installation groove is opened on the right front side of the inside of the pin body 43, wherein a guide groove is also opened on the upper middle side of the inside of the pin body 43; a travel switch 44 is fixedly connected to the middle part of the inner rear part of the installation groove, and the upper end of the contact of the travel switch 44 slides through the interior of the pin body 43 and extends to the lower side of the inside of the guide groove; an induction block 45 is slidably arranged inside the guide groove, and the lower middle part of the induction block 45 is fixedly connected to the upper end of the contact of the travel switch 44.

[0016] In this embodiment, specifically, the thickness of the sensing block 45 is smaller than the depth of the guide groove, and the upper surface of the sensing block 45 is higher than the upper side of the pin body 43 .

[0017] In this embodiment, specifically, the pin body 43 is inserted into the interior of the fixed sleeve 2, and the right end of the pin body 43 passes through the insertion hole; the fixed sleeve 2 is fastened to the pin body 43 by the fastening bolt 3.

[0018] In this embodiment, specifically, the sensing block 45 is slidably disposed in the rectangular groove.

[0019] In this embodiment, specifically, the upper right side and the upper left side of the sensing block 45 are rounded respectively.

[0020] In this embodiment, specifically, the inner diameter of the fixed sleeve 2 is equal to the inner diameter of the insertion hole.

[0021] In this embodiment, specifically, the baffle 41 is made of an alloy steel plate with a circular longitudinal section, and the diameter of the baffle 41 is greater than the inner diameter of the fixed sleeve 2 .

[0022] In this embodiment, specifically, the induction block 45 is an alloy steel block with a rectangular cross section.

[0023] In this embodiment, specifically, the fixing plate 1 is made of an alloy steel plate with a triangular longitudinal section.

[0024] In this embodiment, specifically, the travel switch 44 is electrically connected to the hydraulic system of the external scraper.

[0025] In this embodiment, combined with the Figure 2 and attached Figure 3As shown, when using the utility model, the operator needs to first fix the fixing plate 1 on the frame of the external scraper, and after the scraper boom is lifted, the insertion hole on the fixing plate 1 can coincide with the limiting hole on the scraper boom; when locking the scraper boom, the operator can first control the scraper to lift the boom so that the limiting hole coincides with the insertion hole, and then the operator can loosen the fastening bolt 3 through a wrench so that the pin body 43 can slide inside the fixed sleeve 2, and then the operator can push the baffle plate 41 through the handle 42 so that the baffle plate 41 drives the pin body 43 to move to the right until the pin body 43 The right end of the pin 43 is inserted into the limit hole. When the pin body 43 is inserted into the limit hole, since the upper surface of the sensing block 45 is higher than the upper side of the pin body 43, the sensing block 45 will be subjected to downward pressure, and then the sensing block 45 will move downward in the guide groove and push the contact of the travel switch 44. At this time, the travel switch 44 will sense that the pin body 43 has been inserted into the limit hole, and then the travel switch 44 will transmit instructions to the hydraulic system of the scraper loader, so that the operator cannot control the arm of the scraper loader, thereby achieving the effect of induction locking, which can effectively avoid damage caused by malfunction of the scraper loader.

[0026] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A locking device for a large arm of a scraper, comprising a fixing plate (1), wherein a plug hole is transversely provided at the middle and upper side of the fixing plate (1); a rectangular groove is also provided at the middle and upper side of the fixing plate (1), and the rectangular groove is communicated with the plug hole; a fixing sleeve (2) is integrally connected to the middle and upper side of the left part of the fixing plate (1), and the fixing sleeve (2) is buckled on the outer side of the plug hole; a fastening bolt (3) is threadedly connected to the upper left opening of the fixing sleeve (2), characterized in that: An inductive limit assembly (4) is inserted into the interior of the fixed sleeve (2), and a plug hole is also passed through the right side of the inductive limit assembly (4); the fixed sleeve (2) is fastened and connected to the inductive limit assembly (4) by a fastening bolt (3), and the inductive limit assembly (4) comprises a baffle (41), and a handle (42) is fixedly connected to the middle part of the left part of the baffle (41); a pin body (43) is fixedly connected to the middle part of the right part of the baffle (41), and a mounting groove is provided on the right front side of the interior of the pin body (43), wherein a guide groove is also provided on the upper middle side of the interior of the pin body (43); a travel switch (44) is fixedly connected to the middle part of the inner rear part of the mounting groove, and the upper end of the contact of the travel switch (44) slides through the interior of the pin body (43) and extends to the lower side of the interior of the guide groove; an inductive block (45) is slidably provided in the interior of the guide groove, and the lower middle part of the inductive block (45) is fixedly connected to the upper end of the contact of the travel switch (44).

2. The arm locking device of a scraper according to claim 1, characterized in that: The thickness of the sensing block (45) is smaller than the depth of the guide groove, and the upper surface of the sensing block (45) is higher than the upper side of the pin body (43).

3. The arm locking device of a scraper according to claim 1, characterized in that: The pin body (43) is inserted into the interior of the fixed sleeve (2), and the right end of the pin body (43) passes through the insertion hole; the fixed sleeve (2) is fastened and connected to the pin body (43) by a fastening bolt (3).

4. The arm locking device of a scraper according to claim 1, characterized in that: The induction block (45) is slidably arranged in the rectangular groove.

5. The arm locking device of a scraper according to claim 1, characterized in that: The upper right side and the upper left side of the induction block (45) are rounded respectively.

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