A limit sensor for a sand and gravel stacker

Abstract

The utility model discloses a kind of limit sensors for sand and gravel stocker, including long strip's fixed frame, fixed frame is installed on the sleeve of sand and gravel stocker bottom layer, the top left side of fixed frame is integrally arranged card station A, and upper induction switch is fixed in card station A inside transversely, damping rod is fixed in the bottom of fixed frame transversely, and induction plate is vertically welded on the pull rod of damping rod, and lead wheel for cable threading is fixed in pull rod end;Card station B is fixed in the parallel of fixed frame front side and damping rod, and lower induction switch is fixed in card station B inside transversely, further including induction lump, hole is set in the center of induction lump, is threaded on cable, and induction lump is hung below feed hopper using pull rope.The utility model will send signal when lower induction switch when discharging hopper touches the top of material pile instantaneously, when upper induction switch approaches to induction lump, upper induction switch will send signal, can solve the limit sensing problem in the process of sand and gravel stocker bottom and to top.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to a limit sensor for a sand and gravel stacker. Background Technology

[0002] In sand and gravel stockpiles, sand and gravel are transported to a high altitude by a winch and then fall. To avoid excessive dust, sand and gravel stackers are installed. The discharge hopper of the sand and gravel stacker can be adjusted according to the height of the stockpile, so that the discharge hopper is always close to the top of the stockpile, thereby greatly reducing dust. However, currently the winches are manually controlled, requiring one person to observe and another to operate. Moreover, the discharge hopper needs to be repeatedly and slowly adjusted to reach the bottom and top, which is not only inefficient but also prone to failure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a limit sensor for a sand and gravel stacker, thereby solving the limit sensing problem during the process of the sand and gravel stacker reaching the bottom and top, and providing a control basis for automated control.

[0004] The technical solution of this utility model is as follows:

[0005] A limit sensor for a sand and gravel stacker includes a long, rectangular frame mounted on the bottommost sleeve of the stacker. A mounting platform A is integrally formed on the top left side of the frame, with an upper inductive switch horizontally fixed inside platform A. A damping rod is horizontally fixed at the bottom of the frame, with an inductive plate vertically welded to the pull rod. A guide wheel for threading a cable is fixed to the end of the pull rod. A mounting platform B is fixed parallel to the damping rod on the front side of the frame, with a lower inductive switch horizontally fixed inside platform B. The sensor also includes an inductive sphere with a hole in its center, through which a cable is threaded, and the sphere is suspended below the feed hopper by a pull rope.

[0006] Furthermore, a support arm is welded to the mounting bracket below the card platform A, and a positioning sleeve for threading cables is welded to the end of the support wall.

[0007] The advantages of this utility model are:

[0008] This invention, when the discharge hopper touches the top of the material pile, the cable is no longer under tension and is in a slack state. The damping rod retracts, causing the sensor plate on the pull rod to approach the lower sensor switch. The lower sensor switch then sends a signal to stop the descent. During the ascent, when the upper sensor switch moves up to approach the sensor block suspended below the feed hopper, the upper sensor switch sends a signal to stop the ascent. This solves the limit sensing problem during the bottoming and top-reaching processes of the sand and gravel stacker, providing a control basis for automated control. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0010] In the diagram: 1-Feed hopper, 2-Sleeve, 3-Discharge hopper, 4-Fixed frame, 41-Card A, 42-Card B, 5-Upper induction switch, 51-Induction block, 52-Pull rope, 6-Damping rod, 61-Pull rod, 62-Guide wheel, 7-Lower induction switch, 71-Induction plate, 8-Support arm, 81-Positioning sleeve. Detailed Implementation

[0011] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0012] like Figure 1 As shown:

[0013] A limit sensor for a sand and gravel stacker includes a long, rectangular frame 4, which is mounted on the bottom sleeve 2 of the sand and gravel stacker. A mounting plate A41 is integrally formed on the top left side of the frame 4, and an upper inductive switch 5 is horizontally fixed inside the mounting plate A41. A damping rod 6 is horizontally fixed at the bottom of the frame 4, and an inductive plate 71 is vertically welded to the pull rod 61 of the damping rod 6. A guide wheel 62 for threading a cable is fixed to the end of the pull rod 61. A mounting plate B42 is fixed parallel to the damping rod 6 on the front side of the frame 4, and a lower inductive switch 7 is horizontally fixed inside the mounting plate B42. The sensor also includes an inductive sphere 51 with a hole in its center, through which a cable is threaded, and suspended below the feed hopper 1 by a pull rope 52.

[0014] This utility model is mainly used for limit sensing and control of sand and gravel stackers. When the sand and gravel stacker is installed, the top feed hopper 1 is fixed. The sand and gravel are transported to the feed hopper 1 by the conveyor belt. Then the sleeve 2 is multi-layered and telescopic. It is lowered and raised by the winch. As the stack rises, the bottom discharge hopper 3 can be raised to fit as close as possible to the top of the stack, reducing dust.

[0015] During the lowering process, when the discharge hopper 3 touches the top of the material pile, the cable is no longer under tension and is in a slack state. The damping rod 6 retracts, causing the sensing plate 71 on the pull rod 61 to approach the lower sensing switch 7. The lower sensing switch 7 will then send a signal to stop the lowering. During the upward movement, when the upper sensing switch 5 moves up to approach the sensing block 51 suspended below the feed hopper 1, the upper sensing switch 5 will send a signal to stop the upward movement.

[0016] As an optimized solution, a support arm 8 is welded to the fixed frame 4 below the card platform A41, and a positioning sleeve 81 for threading the cable is welded to the end of the support wall. The positioning sleeve 81 can restrict the swinging cable and play a guiding role.

[0017] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A limit sensor for a rock pile, characterized in that: The device includes a long, rectangular mounting frame installed on the bottommost sleeve of the sand and gravel stacker. A mounting platform A is integrally mounted on the top left side of the mounting frame, with an upper inductive switch horizontally fixed inside platform A. A damping rod is horizontally fixed at the bottom of the mounting frame, with an inductive plate vertically welded to the pull rod. A guide wheel for threading a cable is fixed to the end of the pull rod. A mounting platform B is fixed parallel to the damping rod on the front side of the mounting frame, with a lower inductive switch horizontally fixed inside platform B. The device also includes an inductive sphere with a hole in its center, through which a cable is threaded, and the inductive sphere is suspended below the feed hopper by a pull rope.

2. A limit sensor for a rock piler according to claim 1, characterized in that: A support arm is welded to the fixed frame below the card platform A, and a positioning sleeve for threading cables is welded to the end of the support wall.

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