CN110668024A - Self-locking type medicine weighing hopper - Google Patents

Abstract

The invention relates to a self-locking medicine weighing hopper. The hopper body is mounted on the hopper positioning bracket, one end of the fixing rod is connected to the hopper body, the connecting rod A is hinged to the other end of the fixing rod, and one end of the connecting rod A is the free end , the other end is hinged with one end of the connecting rod B through the main push shaft, the other end of the connecting rod B is hinged with one end of the connecting rod C hinged on the hopper body, the other end of the connecting rod C is hinged with one end of the connecting rod D, the connecting rod The other end of D is hinged with one end of the connecting rod E, the other end of the connecting rod E is hinged on the hopper body, the connecting rod E and the connecting rod C are respectively installed with hopper flaps; A self-locking push plate is slidably connected to the rod, a return spring is sleeved on the spring guide rod, and both ends of the return spring are respectively abutted on the hopper body and the self-locking push plate. The invention can complete the opening and closing of the hopper under the action of the external thrust mechanism, and the hopper flap is automatically reset to the closed state when the external force is withdrawn, the connecting rod is stable and self-locking, and the weighed medicine particles in the hopper will not leak.

Description

A self-locking weighing medicine hopper

technical field

The invention relates to a weighing hopper system, in particular to a self-locking medicine weighing hopper.

Background technique

The weighing hopper is a passive hopper used to complete the weighing and filling of explosives. When the weighing hopper is working, the hopper can be placed on the mass weighing device by an external mechanism, and the inside of the hopper can be injected online. The medicine hopper is opened and closed to complete the drop of medicine. At present, most of the domestic weighing hoppers are complex in structure, and an external multi-degree-of-freedom mechanism is required to realize the opening and closing of the hopper. This medicine weighing hopper has the following disadvantages: first, the external mechanical structure is complex, and the manufacturing cost of the mechanism is high; second, the external mechanical structure requires high positioning accuracy of the hopper during the opening and closing of the hopper. If the actual position of the hopper deviates from the theoretical position If it is larger, the opening and closing of the hopper by the external mechanism may fail; third, the reliability of the hopper closing is low, and the problem of material leakage is prone to occur.

There is no weighing hopper that can be opened and self-locked under the action of an external single-degree-of-freedom mechanism in the domestic field of automatic charging of explosives. At this stage, the opening and closing mechanism of the weighing hopper is complex, the cost of mass production is high, and the reliability of the opening and closing mechanism is low. , can not meet the requirements of high reliability and economy in the field of automatic loading of explosives.

SUMMARY OF THE INVENTION

Aiming at the above problems existing in the existing medicine weighing hopper, the purpose of the present invention is to provide a self-locking medicine weighing hopper. The self-locking medicine weighing hopper can realize the opening of the hopper under the action of an external single-degree-of-freedom thrust mechanism, so as to realize the automatic drop of medicine. In addition, after the external single-degree-of-freedom thrust is cancelled, the flaps of the weighing hopper are automatically closed and self-locked to prevent the hopper from leaking out when the hopper is closed.

The purpose of this invention is to realize through the following technical solutions:

The present invention includes a hopper body, a fixed rod, a connecting rod A, a spring guide rod, a main push shaft, a return spring, a connecting rod B, a connecting rod C, a hopper positioning bracket, a hopper flap, a connecting rod D, a connecting rod E and a self-locking pusher The hopper body is installed on the hopper positioning bracket, one end of the fixing rod is connected to the hopper body, the connecting rod A is hinged to the other end of the fixing rod, one end of the connecting rod A is a free end, and the other end passes through the The main push shaft is hinged with one end of the connecting rod B, the other end of the connecting rod B is hinged with one end of the connecting rod C hinged on the hopper body, and the other end of the connecting rod C is hinged with one end of the connecting rod D, the The other end of the connecting rod D is hinged with one end of the connecting rod E, and the other end of the connecting rod E is hinged on the hopper body. The connecting rod E and the connecting rod C are respectively equipped with a hopper turning plate, and the two hoppers are turned over. The plates are oppositely arranged; a spring guide rod is installed on the hopper body, a self-locking push plate is slidably connected to the spring guide rod, and a reset spring is sleeved on the spring guide rod, and the two ends of the reset spring are respectively abutted on the Hopper body and self-locking push plate; the main push shaft pushes the self-locking push plate and compresses the return spring under the action of external force, and is driven by connecting rod A, connecting rod B, connecting rod C, connecting rod D and connecting rod E , drive the two hopper flaps to open, when the external force is withdrawn, the self-locking push plate is reset by the reset spring, and each connecting rod is pushed to the self-locking state;

Wherein: the self-locking push plate is divided into a self-locking horizontal push plate slidingly connected with the spring guide rod and a self-locking vertical push plate for contacting with the main push shaft and being pushed by the main push shaft;

A bearing group A is installed on the part in contact with the external force on the main thrust shaft, and a bearing group B is installed in the part in contact with the self-locking push plate, and the bearing group A and the bearing group B rotate in opposite directions during the pushing process of the external force;

The connecting rod A is hinged with the other end of the fixed rod through the connecting rod rotating shaft A, and the main push shaft swings around the connecting rod rotating shaft A when pushed by an external force;

One end of the connecting rod B and the other end of the connecting rod A are respectively hinged on the main push shaft, and the other end of the connecting rod B and one end of the connecting rod C are respectively hinged on the parallel shaft;

The connecting rod C is hinged on the hopper body through the connecting rod rotating shaft B, the other end of the connecting rod C is hinged with one end of the connecting rod D through the connecting rod rotating shaft C, and the other end of the connecting rod D is connected with the connecting rod rotating shaft D through the connecting rod rotating shaft D. One end of the connecting rod E is hinged, and the other end of the connecting rod E is hinged on the hopper body through the connecting rod rotating shaft E;

The distance between the connecting rod rotating shaft B and the connecting rod rotating shaft C, the distance between the connecting rod rotating shaft C and the connecting rod rotating shaft D, and the distance between the connecting rod rotating shaft D and the connecting rod rotating shaft E are all equal. The hopper flap is symmetrically opened and closed under the drive of each connecting rod;

The fixing rod is provided with a fixing plate, and a supporting bolt is installed on the fixing plate; the free end of the connecting rod A is hook-shaped, and the hook-shaped free end abuts on the supporting bolt when the hopper flaps are closed superior;

The structure of the left and right sides of the hopper body is the same, and each side has a fixed rod, a connecting rod A, a connecting rod B, a connecting rod C, a connecting rod D and a connecting rod E, and the other ends of the connecting rod A on both sides are respectively hinged to the Both ends of the main push shaft, the other end of the connecting rod B on both sides, and one end of the connecting rod C on both sides are hinged on a parallel shaft;

The main thrust shaft is parallel to the parallel shaft.

The advantages and positive effects of the present invention are:

1. The present invention can open the weighing hopper only under the action of the external single-degree-of-freedom plane thrust. When the weighing hopper is in the closed state, the return spring pulls the link mechanism to the dead point state, realizing self-locking of the link mechanism and weighing the medicine. The hopper is closed reliably.

2. In the present invention, when the medicine weighing hopper is opened by the external thrust mechanism, when there is an error in the relative position and attitude of the external thrust mechanism and the medicine weighing hopper, the normal opening of the medicine weighing hopper is not affected, and the opening of the medicine weighing hopper has high reliability.

3. The present invention has the advantages of simple structure, low mass production cost and high cost performance.

Description of drawings

Fig. 1 is the structural front view of the present invention;

Fig. 2 is the right side view of the structure of the present invention;

Fig. 3 is the three-dimensional structure schematic diagram of the present invention;

4 is a schematic structural diagram of the present invention in a non-contact state with an external thrust mechanism;

5 is a schematic three-dimensional structure diagram of the present invention in a non-contact state with an external thrust mechanism;

6 is a schematic structural diagram of the present invention in a state of contact with an external thrust mechanism;

Fig. 7 is the three-dimensional structure schematic diagram of the contact state of the present invention and the external thrust mechanism;

Among them: 1 is the hopper body, 2 is the fixed rod, 3 is the connecting rod A, 4 is the connecting rod rotating shaft A, 5 is the spring guide rod, 6 is the main push shaft, 7 is the return spring, 8 is the connecting rod B, and 9 is the parallel connection Axle, 10 is connecting rod C, 11 is hopper positioning bracket, 12 is hopper flap, 13 is connecting rod D, 14 is connecting rod E, 15 is linear bearing, 16 is self-locking horizontal push plate, 17 is bearing group A , 18 is the bearing group B, 19 is the connecting rod rotating shaft B, 20 is the connecting rod rotating shaft C, 21 is the connecting rod rotating shaft D, 22 is the connecting rod rotating shaft E, 23 is the external thrust mechanism, 24 is the self-locking vertical push plate, 25 For the fixing plate, 26 is the support bolt.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1-7, the present invention includes a hopper body 1, a fixed rod 2, a connecting rod A3, a spring guide rod 5, a main push shaft 6, a return spring 7, a connecting rod B8, a connecting rod C10, a hopper positioning bracket 11, and a hopper The flip plate 12, the connecting rod D13, the connecting rod E14 and the self-locking push plate, wherein the hopper body 1 is installed on the hopper positioning bracket 11, the lower plane of the hopper positioning bracket 11 in this embodiment is provided with positioning pin holes, which can be positioned externally. Under the action of the hopper, the positioning of the hopper is completed. One end of the fixed rod 2 is connected to the hopper body 1, and the connecting rod A3 is hinged to the other end of the fixed rod 2. One end of the connecting rod A3 is a free end, and the other end is hinged with one end of the connecting rod B8 through the main push shaft 6. The other end of the rod B8 is hinged with one end of the connecting rod C10 hinged on the hopper body 1, the other end of the connecting rod C10 is hinged with one end of the connecting rod D13, and the other end of the connecting rod D13 is hinged with one end of the connecting rod E14. The other end of the connecting rod E14 is hinged on the hopper body 1 , the connecting rod E14 and the connecting rod C10 are respectively provided with a hopper turning plate 12 , and the two hopper turning plates 12 are arranged oppositely.

The structure of the left and right sides of the hopper body 1 in this embodiment is the same, and each side has a fixed rod 2, a connecting rod A3, a connecting rod B8, a connecting rod C10, a connecting rod D13 and a connecting rod E14, and the connecting rod A3 on each side is connected to The rod rotating shaft A4 is hinged to the other end of the fixed rod 2 on the same side, the other ends of the connecting rods A3 on both sides are hinged to the two ends of the main push shaft 6 respectively, and one end of the connecting rods B8 on both sides is hinged to the two ends of the main push shaft 6 respectively. , the other end of the connecting rod B8 on both sides and one end of the connecting rod C10 on both sides are hinged to the two ends of a parallel shaft 9 ; The connecting rod C10 on each side is hinged to the hopper body 1 through the connecting rod rotating shaft B19, the other end of the connecting rod C10 is hinged with one end of the connecting rod D13 through the connecting rod rotating shaft C20, and the other end of the connecting rod D13 is connected with the connecting rod rotating shaft D21. One end of the connecting rod E14 is hinged, and the other end of the connecting rod E14 is hinged to the hopper body 1 through the connecting rod rotating shaft E22. In this embodiment, the distance between the connecting rod rotating shaft B19 and the connecting rod rotating shaft C20, the distance between the connecting rod rotating shaft C20 and the connecting rod rotating shaft D21, and the distance between the connecting rod rotating shaft D21 and the connecting rod rotating shaft E22 are all equal. The flap 12 is opened and closed symmetrically under the driving of each connecting rod. In this embodiment, each side of the fixing rod 2 is provided with a fixing plate 25, and a supporting bolt 26 is installed on the fixing plate 25; abuts on the support bolt 26 at the time.

A spring guide rod 5 is also installed on the hopper body 1 of the present invention, a self-locking push plate is slidably connected to the spring guide rod 5, and a return spring 7 is sleeved on the spring guide rod 5. Connected to the hopper body 1 and the self-locking push plate. The main push shaft 6 swings around the connecting rod axis A4 under the action of external force, pushes the self-locking push plate, compresses the return spring 7, and drives the connecting rod A3, connecting rod B8, connecting rod C10, connecting rod D13 and connecting rod E14 through the transmission of connecting rod A3, connecting rod B8, connecting rod C10, connecting rod D13 and connecting rod E14. The two hopper flaps 12 are opened, and when the external force is withdrawn, the self-locking push plate is reset by the return spring 7, and each connecting rod is pushed to the self-locking state. The self-locking push plate in this embodiment is divided into a self-locking horizontal push plate 16 and a self-locking vertical push plate 24. The self-locking horizontal push plate 16 is used for sliding connection with the spring guide rod 5, and the self-locking vertical push plate 24 is used for connecting with the main pusher The shaft 6 contacts and is pushed by the main push shaft 6 . A bearing group A17 is installed on the part of the main thrust shaft 6 in contact with the external force, and a bearing group B18 is installed in the part in contact with the self-locking push plate. The bearing group A17 and the bearing group B18 rotate in opposite directions during the pushing process of the external force. Four spring guide rods 5 are installed on the hopper body 1 of this embodiment, two on the upper and lower sides of the main push shaft 6 respectively, and a return spring 7 is sleeved on each spring guide rod 5 . In this embodiment, a self-locking transverse push plate 16 is respectively provided on the upper and lower sides of the main push shaft 6 , and linear bearings 15 are fixed on both ends of each self-locking transverse push plate 16 , and the self-locking transverse push plates 16 pass through the linear bearings 15 . It is slidably connected with two spring guide rods 5, and the return spring 7, the linear bearing 15 and the spring guide rod 5 are arranged concentrically; A bearing group A17 for contacting with external force is installed in the middle of the rotation, and a bearing group B18 is installed in rotation at both ends. The two bearing groups B18 are used to push the two self-locking vertical push plates 24.

In this embodiment, the main thrust shaft 6 , the parallel shaft 9 , the connecting rod rotating shaft A4 , the connecting rod rotating shaft B19 , the connecting rod rotating shaft C20 , the connecting rod rotating shaft D21 and the connecting rod rotating shaft E22 are all hinged with deep groove ball bearings.

The working principle of the present invention is:

The present invention can complete the opening of the hopper flap 12 under the action of an external single-degree-of-freedom thrust, and complete the closing and self-locking of the hopper flap 12 under the action of the return spring 7 . Specifically:

The external single-degree-of-freedom thrust is provided by the external thrust mechanism 23 , and the external thrust mechanism 23 is in the prior art, and details are not described herein again. When the self-locking weighing hopper needs to be opened, the external thrust mechanism 23 applies thrust to the main thrust shaft 6 along the axial direction of the spring guide rod 5, and the thrust acts on the bearing group A17, and the main thrust shaft 6 rotates around the connecting rod axis A4 under the action of external force. Swing, the bearing group B18 and the self-locking vertical push plate 24 roll relative to each other, and the force is transmitted to the self-locking horizontal push plate 16, so that the self-locking horizontal push plate 16 moves along the spring guide rod 5 and compresses the return spring 7; at the same time, At the same time, under the action of the link mechanism (link A3, link B8, link C10, link D13, link E14), the two hopper flaps 12 are opened symmetrically. When the self-locking weighing hopper needs to be closed, due to the cancellation of the external force, the self-locking horizontal push plate 16 transmits the force to the self-locking vertical push plate 24 under the action of the thrust of the return spring 7, and is pushed by the self-locking vertical push plate 24 The main push shaft 6 pushes the link mechanism to a self-locking state, and the free end of the link A3 is supported on the support bolt 26 .

The present invention completes the opening and closing of the hopper flap 12 under the action of an external single-degree-of-freedom thrust, and the weighing hopper itself has no cables and trachea. Accurate weighing of weight.

Claims (10)

1. The utility model provides a from locking-type title medicine hopper which characterized in that: comprises a hopper body (1), a fixed rod (2), a connecting rod A (3), a spring guide rod (5), a main push shaft (6), a reset spring (7), a connecting rod B (8), a connecting rod C (10), a hopper positioning bracket (11), a hopper turning plate (12), a connecting rod D (13), a connecting rod E (14) and a self-locking push plate, wherein the hopper body (1) is arranged on the hopper positioning bracket (11), one end of the fixed rod (2) is connected on the hopper body (1), the connecting rod A (3) is hinged at the other end of the fixed rod (2), one end of the connecting rod A (3) is a free end, the other end of the connecting rod A is hinged with one end of the connecting rod B (8) through the main push shaft (6), the other end of the connecting rod B (8) is hinged with one end of the connecting rod C (10) hinged on the hopper body (1), and the other end of the connecting rod C (10) is hinged with, the other end of the connecting rod D (13) is hinged with one end of a connecting rod E (14), the other end of the connecting rod E (14) is hinged on the hopper body (1), hopper turning plates (12) are respectively arranged on the connecting rod E (14) and the connecting rod C (10), and the two hopper turning plates (12) are oppositely arranged; the hopper is characterized in that a spring guide rod (5) is installed on the hopper body (1), a self-locking push plate is connected to the spring guide rod (5) in a sliding mode, a return spring (7) is sleeved on the spring guide rod (5), and two ends of the return spring (7) are respectively abutted to the hopper body (1) and the self-locking push plate; the main push shaft (6) pushes the self-locking push plate and compresses the reset spring (7) under the action of external force, the two hopper turning plates (12) are driven to be opened through the transmission of the connecting rod A (3), the connecting rod B (8), the connecting rod C (10), the connecting rod D (13) and the connecting rod E (14), and after the external force is cancelled, the self-locking push plate is reset through the reset spring (7), and each connecting rod is pushed to be in a self-locking state.

2. The self-locking medicine weighing hopper according to claim 1, wherein: the self-locking push plate is divided into a self-locking transverse push plate (16) which is in sliding connection with the spring guide rod (5) and a self-locking vertical push plate (24) which is used for being in contact with the main push shaft (6) and pushed by the main push shaft (6).

3. The self-locking medicine weighing hopper according to claim 1, wherein: and a bearing group A (17) is arranged on the main push shaft (6) and is in contact with an external force, a bearing group B (18) is arranged on the main push shaft and is in contact with the self-locking push plate, and the bearing group A (17) and the bearing group B (18) are opposite in steering in the external force pushing process.

4. The self-locking medicine weighing hopper according to claim 1, wherein: the connecting rod A (3) is hinged with the other end of the fixing rod (2) through a connecting rod rotating shaft A (4), and the main pushing shaft (6) swings around the connecting rod rotating shaft A (4) when pushed by external force.

5. The self-locking medicine weighing hopper according to claim 1, wherein: one end of the connecting rod B (8) and the other end of the connecting rod A (3) are respectively hinged on the main push shaft (6), and the other end of the connecting rod B (8) and one end of the connecting rod C (10) are respectively hinged on the parallel shaft (9).

6. The self-locking medicine weighing hopper according to claim 1, wherein: the hopper is characterized in that the connecting rod C (10) is hinged to the hopper body (1) through a connecting rod rotating shaft B (19), the other end of the connecting rod C (10) is hinged to one end of the connecting rod D (13) through a connecting rod rotating shaft C (20), the other end of the connecting rod D (13) is hinged to one end of the connecting rod E (14) through a connecting rod rotating shaft D (21), and the other end of the connecting rod E (14) is hinged to the hopper body (1) through a connecting rod rotating shaft E (22).

7. The self-locking medicine weighing hopper according to claim 6, wherein: the distance between the connecting rod rotating shaft B (19) and the connecting rod rotating shaft C (20), the distance between the connecting rod rotating shaft C (20) and the connecting rod rotating shaft D (21) and the distance between the connecting rod rotating shaft D (21) and the connecting rod rotating shaft E (22) are equal, and the two hopper turning plates (12) are symmetrically opened and closed under the driving of the connecting rods.

8. The self-locking medicine weighing hopper according to claim 1, wherein: a fixing plate (25) is arranged on the fixing rod (2), and a supporting bolt (26) is arranged on the fixing plate (25); the free end of the connecting rod A (3) is hook-shaped, and the hook-shaped free end is abutted against the supporting bolt (26) when the hopper turning plate (12) is folded.

9. The self-locking medicine weighing hopper according to claim 1, wherein: the hopper body (1) left and right sides structure is the same, and every side all has dead lever (2), connecting rod A (3), connecting rod B (8), connecting rod C (10), connecting rod D (13) and connecting rod E (14), and the other end of the connecting rod A (3) of both sides articulates respectively in the both ends of main push shaft (6), and the other end of the connecting rod B (8) of both sides, the one end of the connecting rod C (10) of both sides all articulate on a parallel shaft (9).

10. The self-locking medicine weighing hopper according to claim 9, wherein: the main push shaft (6) is parallel to the parallel shaft (9).

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