Sliding and rotating discharging door for pit

Abstract

The utility model discloses a sliding discharge door for a pit, which is characterized in that the middle parts of two long edges of a door frame are connected through a middle frame, and door shaft guide grooves which obliquely extend downwards are respectively arranged on door shaft guide plates at the upper parts of two ends of the long edges of the door frame; door shafts are hinged to the two sides of the upper end of the flap door respectively, and the outer ends of the door shafts are inserted into the corresponding door shaft guide grooves respectively; the free ends of the two flap doors obliquely stretch out towards the lower portion of the middle frame, discharging air cylinders are hinged to the lower portions of the two short edges of the door frame respectively, and the free ends of piston rods of the two discharging air cylinders are hinged to the middles of the back faces of the corresponding flap doors respectively. Sliding guide plates are fixed to the outer walls of the two long edges of the door frame respectively, guide sliding grooves are formed in the sliding guide plates, and locking grooves are formed in the upper ends of the guide sliding grooves. The middle portions of the two sides of the flap door are respectively connected with a guide pin, and the outer ends of the two guide pins are respectively embedded in the corresponding guide sliding grooves. The sliding and rotating discharging door for the ground pit only uses one set of air cylinders, fault points are few, the action is reliable, the construction cost is greatly reduced, and the convenience and safety of overhauling are improved.

Description

Technical Field

[0001] This utility model relates to a sliding unloading gate for pits, belonging to the technical field of bulk material unloading equipment. Background Technology

[0002] The storage yards of the flat-roofed warehouses are rectangular, with a width often reaching 30-40 meters, and there is a trend towards wider yards. The depth can sometimes exceed 200 meters. Unloading requires specialized unloading machines, which are arranged along the depth of a pit located in the center of the warehouse. When the unloading machine gates open, the material, positioned at the top width, falls into the pit. A scraper conveyor then transports the material outside the warehouse.

[0003] Chinese utility model patent CN 214567948U discloses a flip-door device, including symmetrically openable and closable flip panels. The tops of the two flip panels are symmetrically hinged to both sides of a flip panel top beam. A connecting rod is hinged to the middle of the back of the two flip panels, and the lower end of the connecting rod is hinged to a connecting rod hinge seat. An electric push rod is hinged to the bottom of the flip panel top beam, and the bottom of the electric push rod is fixed to an electric push rod support. The electric push rod support and the connecting rod hinge seat are respectively fixed to the bottom beam of the flip door. X-guide wheels are provided at the front and rear ends of the flip panel top beam, and Y-guide wheels are provided on the upper and lower sides of the X-guide wheels. The X-guide wheels and Y-guide wheels are embedded in the vertical support beam groove of the flip door column. A canopy bracket is installed on the top of the flip door column, and a canopy is fixed on the top of the canopy bracket. The canopy is symmetrically arranged in a V-shape and covers the top of the two flip panels.

[0004] Although the above technical solutions can be set up on the pit of the flat warehouse to avoid the building's civil engineering enclosure structure, the main body is located above the ground, the structure is more complex, and there are more potential failure points. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the problems existing in the above and / or prior art, this utility model is proposed.

[0007] The purpose of this utility model is to overcome the problems existing in the prior art and provide a sliding unloading gate for pits that can complete the opening, closing and locking of the gate after closing with only one set of cylinders. It has fewer failure points, reliable operation and greatly reduces construction costs.

[0008] To solve the above technical problems, this utility model provides a sliding unloading gate for a pit, comprising a door frame covering the upper end of the pit. The two long sides of the door frame are connected at the middle by a middle frame. Thickened door hinge guide plates are respectively provided on the upper part of both ends of the long sides of the door frame, and each door hinge guide plate is provided with a door hinge guide groove extending obliquely downwards. Door hinges are respectively hinged to the upper two sides of the flap doors, and the outer ends of the door hinges are respectively inserted into the corresponding door hinge guide grooves. The free ends of the two flap doors extend obliquely downwards towards the middle frame, and the lower parts of the two short sides of the door frame are respectively hinged... There are two unloading cylinders, and the free ends of the piston rods of the two unloading cylinders are respectively hinged to the middle of the back of the corresponding flip door; the two long outer walls of the door frame are respectively fixed with sliding guide plates, and the sliding guide plates are provided with guide grooves. The guide grooves extend downward along an arc with the axis of the door hinge at the upper end of the door hinge guide groove as the center. The upper end of the guide groove is provided with a locking groove that bends horizontally away from the unloading cylinder; the middle of both sides of the flip door are respectively connected with outwardly extending guide pins, and the outer ends of the two guide pins are respectively embedded in the corresponding guide grooves.

[0009] As an improvement to this utility model, when the guide pin is located in the locking groove, the door hinge is located at the lower end of the door hinge guide groove.

[0010] As a further improvement of this utility model, a roller is fixed to the outer end of the guide pin, and the roller is embedded in the corresponding guide groove.

[0011] As a further improvement of this utility model, the outer port below the middle of the guide groove is provided with a groove chamfer.

[0012] As a further improvement of this utility model, the two sides of the flip door are respectively provided with rotating baffles that cover the inner port of the guide groove.

[0013] As a further improvement of this utility model, the guide pin passes through the guide pin hole of the upper part of the rotating baffle plate, the lower part of the rotating baffle plate is provided with a baffle plate waist-shaped groove, the baffle plate waist-shaped groove extends obliquely downward, the baffle plate rotating pin is embedded in the baffle plate waist-shaped groove, and the baffle plate rotating pin is fixed on the long side of the door frame.

[0014] As a further improvement of this utility model, the rotating baffle is semi-circular, with its bottom horizontal edge parallel to the lower edge of the door frame, and the guide pin hole of the baffle is located below the arc-shaped top.

[0015] As a further improvement of this utility model, the top of both sides of the middle frame is provided with chamfers, and the bottom of both sides of the middle frame is provided with middle frame sealing stops; the free end of the flip door is provided with flip door sealing folds, and the flip door sealing folds extend horizontally to below the middle frame sealing stops.

[0016] As a further improvement of this utility model, the angle between the top surface of the flip door and the horizontal plane is 14° to 18°.

[0017] Compared with the prior art, the present invention has achieved the following beneficial effects: 1. The door frame of the sliding unloading door of the pit is supported on the pit stop, and the top is flush with the ground of the warehouse, so as to achieve no obstacles above the ground of the warehouse and increase the storage space of the warehouse; the flip door is opened and closed by the unloading cylinder. When the flip door is opened downward, the material above naturally flows into the pit and is sent out by the buried scraper conveyor.

[0018] 2. The top surface of the flap door is inclined downwards. When the unloading cylinder opens the flap door, the angle between the flap door and the horizontal plane can reach nearly 60°, making unloading faster and smoother; the flap door can achieve natural sealing to prevent material leakage.

[0019] 3. The opening and closing action can be completed using only one unloading cylinder. After the flap door is closed, it automatically locks itself. Even when the unloading cylinder is not working, the flap door is still in a reliably closed state. This greatly simplifies the structure and reduces the number of failure points while ensuring reliability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein:

[0021] Figure 1 This is a front view of the sliding unloading gate for the pit according to this utility model;

[0022] Figure 2 for Figure 1 A diagram with the front door frame hidden;

[0023] Figure 3 This utility model provides a three-dimensional sliding unloading gate for pits. Figure 1 ;

[0024] Figure 4 for Figure 1 3D Figure 2 ;

[0025] Figure 5 for Figure 1 Exploded view;

[0026] In the diagram: 1. Door frame; 1a. Door side baffle; 2. Middle frame; 2a. Middle frame sealing stop;

[0027] 3. Flip-up door; 3a. Door hinge; 3b. Guide pin; 3b1. Lock nut; 3c. Roller; 3d. Flip-up door sealing edge;

[0028] 4. Unloading cylinder; 5. Door hinge guide plate; 5a. Door hinge guide groove;

[0029] 6. Sliding guide plate; 6a. Guide groove; 6b. Groove chamfer; 6c. Locking groove;

[0030] 7. Rotary baffle; 7a. Guide pin hole for baffle; 7b. Waist-shaped groove for baffle; 7c. Turning pin for baffle;

[0031] 8. Valve assembly. Detailed Implementation

[0032] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0033] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0035] like Figures 1 to 5 As shown, the sliding unloading gate for pits of this utility model includes a door frame 1, a flap door 3, and an unloading cylinder 4. The door frame 1 covers the upper end of the pit, with its short sides supported on the stops on both sides of the pit, and its long sides spanning between the stops on both sides of the pit. The two long sides of the door frame 1 are connected in the middle by a middle frame 2, and the two short sides of the door frame 1 are respectively hinged to the flap door 3 by door hinges 3a. The door hinges 3a have two coaxial shafts and are respectively hinged to both sides of the flap door 3 in the width direction.

[0036] Thickened door hinge guide plates 5 are provided on the upper part of both ends of the long side of the door frame, and each door hinge guide plate 5 is provided with a door hinge guide groove 5a extending obliquely downward. Door hinges 3a are respectively hinged to the upper two sides of the flip door 3, and the outer ends of the door hinges 3a are respectively inserted into the corresponding door hinge guide grooves 5a. The free ends of the two flip doors 3 extend obliquely downward towards the middle frame 2. Unloading cylinders are respectively hinged to the lower part of the two short sides of the door frame, and the free ends of the piston rods of the two unloading cylinders are respectively hinged to the middle of the back of the corresponding flip door 3.

[0037] Sliding guide plates 6 are fixed to the outer walls of the two long sides of the door frame. The sliding guide plates 6 are provided with guide grooves 6a. The guide grooves 6a extend downward along an arc with the axis of the door hinge 3a at the upper end of the door hinge guide groove 5a as the center. The upper end of the guide grooves 6a is provided with locking grooves 6b that bend horizontally away from the unloading cylinder. The middle parts of the two sides of the flip door 3 are respectively connected with outwardly extending guide pins 3b. The inner ends of the guide pins 3b are fixed to the side edges of the flip door 3 by lock nuts 3b1. The outer ends of the two guide pins 3b are respectively embedded in the corresponding guide grooves 6a.

[0038] To reduce sliding resistance, a roller 3c can be fixed to the outer end of the guide pin 3b, and the roller 3c is embedded in the corresponding guide groove 6a. The outer end of the guide groove 6a below the middle is provided with a groove chamfer 6c to prevent dust or material from accumulating at the lower edge of the guide groove 6a, so that the roller 3c will not be obstructed.

[0039] The free ends of the two flap doors 3 extend downwards towards the middle frame 2, and the angle between the top surface of the flap door 3 and the horizontal plane is 14° to 18°. In this way, the flap door 3 can be opened to obtain a larger opening angle, usually reaching 58° to 60°, which makes unloading smoother and faster.

[0040] Both sides of the top of the middle frame 2 are chamfered, which guides the material inwards, increases the opening size at the top, and reduces the material accumulation area at the top of the middle frame. The bottom of both sides of the middle frame 2 are provided with middle frame sealing stops 2a; the free end of the flip door 3 is provided with a flip door sealing flange 3d. When the flip door 3 is closed and its free end abuts against the bottom of the middle frame 2, the flip door sealing flange 3d is located below the middle frame sealing stops 2a, forming a horizontal slit, achieving natural material sealing.

[0041] After the flip door 3 is closed, there are door side baffles 1a above the gaps between the two sides and the door frame 1 to prevent material leakage on both sides. The door side baffles 1a are made of thin plate bent into shape, with triangular faces facing each other. The upper end is bent outward and fixedly connected to the upper edge of the door frame 1, while the lower end is open.

[0042] The unloading cylinders 4 on both sides operate synchronously, that is, the two flap doors 3 close and open synchronously. The figure shows the open and closed states respectively.

[0043] When the flap door 3 is fully open, the door hinge 3a is located at the upper end of the door hinge guide groove 5a, and the roller 3c is located at the lower end of the guide groove 6a. Before loading, the flap door 3 is closed. Under the control of the valve assembly 8, the piston rod of the unloading cylinder 4 extends, and the flap door 3 rotates upward around the door hinge 3a. At the same time, the roller 3c moves upward along the guide groove 6a. When it reaches the upper end of the guide groove 6a, the flap door 3 slides forward a certain distance under the push of the unloading cylinder 4, causing the roller 3c to slide into the locking groove 6b. At this time, the door hinge 3a is located at the lower end of the door hinge guide groove 5a, and the flap door 3 enters the self-locking state. The weight of the material carried by the flap door 3 does not generate a component force that causes the flap door 3 to slide upward, so the roller 3c will not automatically slide into the guide groove 6a, and the self-locking is very reliable. The lower horizontal section of the locking groove 6b bears the material pressure, and the unloading cylinder 4 does not bear the pressure generated by the material.

[0044] During unloading, as required by the material level or unloading point, the piston rod of the unloading cylinder 4 retracts, first pulling the flap door 3 backward a certain distance, causing the roller 3c to slide out of the locking groove 6b and enter the upper end of the guide groove 6a. At this time, the door hinge 3a returns to the upper end of the door hinge guide groove 5a. As the piston rod of the unloading cylinder 4 continues to retract, the flap door 3 rotates downward around the door hinge 3a and opens, starting the unloading process. When the roller 3c slides to the lower end of the guide groove 6a, the flap door 3 reaches its maximum opening angle.

[0045] The flip door 3 is provided with rotating baffles 7 on both sides, which cover the inner port of the guide groove 6a. The rotating baffles 7 are attached to the inner wall of the long side of the door frame 1. The rotating baffles 7 are semi-circular. When the flip door 3 is closed, the bottom horizontal edge of the rotating baffles 7 is parallel to the lower edge of the long side of the door frame, the arc-shaped top faces upward, and the baffle guide pin hole 7a is located below the arc-shaped top.

[0046] The guide pin 3b passes through the guide pin hole 7a on the upper part of the rotating baffle 7. The lower part of the rotating baffle 7 is provided with a baffle waist-shaped groove 7b, which extends obliquely downward. A baffle rotating pin 7c is embedded in the baffle waist-shaped groove 7b. The baffle rotating pin 7c is fixed on the long side of the door frame, forming a two-point positioning for the rotating baffle 7. The baffle rotating pin 7c is stepped with a thicker inner end and a thinner outer end, which protrudes from a small hole on the long side of the door frame. A shaft retaining ring is embedded in the outer end for axial positioning.

[0047] When the flap door 3 is closed, the guide pin 3b is in the high position, that is, the roller 3c is in the locking groove 6b, and the baffle plate rotating pin 7c is close to one end of the baffle plate waist groove 7b. The rotating baffle plate 7 laterally blocks the inner port of the guide slide 6a.

[0048] When the flap door 3 is open, the guide pin 3b is in the low position, meaning the roller 3c is at the lower end of the guide groove 6a, and the baffle plate pivot pin 7c is at the other end of the baffle plate slot 7b. The baffle plate vertically blocks the inner port of the guide groove 6a. Thus, when materials are opened and closed, the rotating baffle plate 7 can block the inner port of the guide groove 6a, preventing material leakage and material buildup at the lower edge of the guide groove 6a, ensuring smooth sliding of the roller 3c along the guide groove 6a.

[0049] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A sliding unloading gate for a pit, comprising a gate frame covering the upper end of the pit, characterized in that: The two long sides of the door frame are connected by a middle frame. The upper part of both ends of the long sides of the door frame is provided with thickened door hinge guide plates. Each door hinge guide plate is provided with a door hinge guide groove extending obliquely downward. Door hinges are respectively hinged to the upper two sides of the flip door. The outer ends of the door hinges are respectively inserted into the corresponding door hinge guide grooves. The free ends of the two flip doors extend downwards towards the middle frame, and unloading cylinders are respectively hinged to the lower part of the two short sides of the door frame. The free ends of the piston rods of the two unloading cylinders are respectively hinged to the middle of the back of the corresponding flip doors. The two long outer walls of the door frame are respectively fixed with sliding guide plates. The sliding guide plates are provided with guide grooves. The guide grooves extend downward along an arc with the axis of the door hinge at the upper end of the door hinge guide groove as the center. The upper end of the guide grooves is provided with a locking groove that bends horizontally away from the unloading cylinder. The two sides of the flip door are respectively connected to outward-extending guide pins, and the outer ends of the two guide pins are respectively embedded in the corresponding guide grooves.

2. The sliding unloading gate for a pit according to claim 1, characterized in that: When the guide pin is in the locking groove, the door hinge is located at the lower end of the door hinge guide groove.

3. The sliding unloading gate for a pit according to claim 1, characterized in that: A roller is fixed to the outer end of the guide pin, and the roller is embedded in the corresponding guide groove.

4. The sliding unloading gate for a pit according to claim 1, characterized in that: The outer port below the middle of the guide groove is provided with a groove chamfer.

5. The sliding unloading gate for a pit according to claim 1, characterized in that: The flip door is equipped with rotating baffles on both sides that cover the inner port of the guide groove.

6. The sliding unloading gate for a pit according to claim 5, characterized in that: The guide pin passes through the guide pin hole of the upper part of the rotating baffle plate. The lower part of the rotating baffle plate is provided with a baffle plate waist-shaped groove. The baffle plate waist-shaped groove extends obliquely downward. A baffle plate rotating pin is embedded in the baffle plate waist-shaped groove. The baffle plate rotating pin is fixed to the long side of the door frame.

7. The sliding unloading gate for a pit according to claim 6, characterized in that: The rotating baffle is semi-circular, with its bottom horizontal edge parallel to the lower edge of the door frame, and the guide pin hole of the baffle is located below the arc-shaped top.

8. The sliding unloading gate for a pit according to claim 1, characterized in that: Both sides of the top of the middle frame are chamfered, and both sides of the bottom of the middle frame are respectively provided with middle frame sealing stops; the free ends of the flip door are respectively provided with flip door sealing folds, and the flip door sealing folds extend horizontally to below the middle frame sealing stops.

9. The sliding unloading gate for a pit according to any one of claims 1 to 8, characterized in that: The angle between the top surface of the flip door and the horizontal plane is 14° to 18°.

Images