Powder overturning and discharging device

Abstract

The utility model provides a powder overturning and discharging device which comprises a box body, an overturning mechanism is arranged in the box body, a window opposite to the overturning mechanism is arranged on the box body, the window is used for allowing boats to enter and exit from the overturning mechanism in the box body, a boat placing position is arranged on the overturning mechanism and used for placing the boats, and the boat placing position is used for placing the boats. The turnover mechanism is used for driving the boat to turn over, the box body is provided with a knocking mechanism capable of knocking the boat in a telescopic mode, and a discharging port is formed in the bottom of the box body. The box body is provided with the knocking boat which can be matched with the turnover mechanism after the boat is turned over, the knocking boat is used for enabling the boat to vibrate so as to enable powder blocks adhered to the boat to be vibrated down, so that no powder block is adhered to the surface of the unloaded boat, the subsequent cleaning work is reduced, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of material unloading equipment, in particular to a powder material overturning unloading device. Background Art

[0002] The metal powder processed by the reduction furnace needs to be unloaded from the boat and stored in the barrel. Due to the characteristics of powder agglomeration and sticking to the boat, the current domestic powder unloading method basically adopts manual unloading or semi-automatic unloading, which has the problems of heavy carrier and frequent operation. Therefore, some automatic powder unloading equipment has emerged, such as the patent document with announcement number CN209871770U, which can solve the problem of heavy carrier and does not require manual flipping and dumping. However, the current automatic unloading equipment will cause the problem of powder agglomeration and adhesion to the boat during the flipping and unloading process, resulting in residual material after the boat is unloaded, resulting in the need to clean the boat before the subsequent use of the boat to remove the agglomerated powder on it, and still faces the problem of manually dumping the remaining powder. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a powder material turning and unloading device.

[0004] The utility model is realized by the following method: a powder turning and unloading device comprises a box body, a turning mechanism is arranged in the box body, a window opposite to the turning mechanism is arranged on the box body, the window is used for boats to enter and exit the box body, a boat placement position is arranged on the turning mechanism for placing the boat, the turning mechanism is used to drive the boat to turn, the box body is provided with a knocking mechanism which can be telescopically knocked on the boat, and a discharge port is arranged at the bottom of the box body.

[0005] Preferably, the knocking mechanism comprises a telescopic driving member and a knocking member, the telescopic driving member is mounted on the box body, the knocking member is mounted on the telescopic driving member, and the knocking member is opposite to the flipped boat.

[0006] Preferably, the telescopic driving member is mounted on the upper surface of the box body, and a first clearance hole communicating with the box body is downwardly opened on the upper surface of the box body, and the knocking member is inserted into the box body through the first clearance hole.

[0007] Preferably, a crushing mechanism is provided in the box body, and the crushing mechanism includes a mounting rod and a crushing knife. The mounting rod is rotatably mounted on the flipping mechanism. An elastic member is also connected between the mounting rod and the flipping mechanism, and the elastic member is used to drive the mounting rod to approach the boat. The crushing knife is mounted on the mounting rod and opposite to the boat. After the flipping mechanism is flipped, the crushing knife can extend into the boat.

[0008] Preferably, there are multiple mounting rods, and one end of the multiple mounting rods away from the connection point with the flipping mechanism is commonly connected to a mounting plate; when the flipping mechanism is in an initial state, multiple crushing knives are spaced apart on the lower surface of the mounting plate, and a limit rod is also provided in the box body, the limit rod avoids the movement trajectory of the flipping mechanism, and the limit rod is used to block the mounting rod from pressing down close to the boat placement position.

[0009] Preferably, when the flipping mechanism is in an initial state, the boat is placed at the rear of the flipping mechanism, the connection point between the mounting rod and the flipping mechanism is located at the front side of the flipping mechanism, one end of the mounting rod away from the connection point with the flipping mechanism extends backward, the limit rod is fixed to the rear of the box body, the limit rod is parallel to the flipping axis of the flipping mechanism, the limit rod abuts against the lower side of the extension section of the mounting rod, and the crushing knife does not extend into the boat; the elastic member is a spring, one end of the spring is connected to the flipping mechanism, and the other end of the spring is connected to the middle part of the mounting rod.

[0010] Preferably, the flipping mechanism includes turntables rotatably mounted on the left and right walls of the box respectively, the boat placement position is arranged between the two turntables, and a boat supporting assembly is fixedly provided at the boat placement position for placing the boat, and the turntable is driven by a motor.

[0011] Preferably, the boat support assembly includes a mounting frame, which includes two side panels. When the flipping mechanism is in an initial state, a plurality of rollers are spaced apart at the bottom of the two side panels. The left and right ends of the mounting frame are open, and the windows are respectively provided on the left and right walls of the box body. A clearance opening is provided at a position of each turntable opposite to the opening of the mounting frame. A plurality of limit pins are respectively installed on the front and rear frames within the opening of the mounting frame to prevent the boat from falling out.

[0012] Preferably, the flipping mechanism also includes an arc-shaped plate, and when the flipping mechanism is in an initial state, the left end and the right end of the arc-shaped plate are respectively fixed on the circumference of the bottom of the two turntables, and the center of the two turntables is fixedly connected with the same rotating shaft, and the two ends of the rotating shaft are respectively rotatably connected to the left side wall and the right side wall of the box body; the motor is installed on the outside of the box body, and the output shaft of the motor is transmission-connected to the rotating shaft; after the flipping mechanism is flipped, the arc-shaped plate is provided with a second clearance hole at a position opposite to the knocking piece and the mounting frame, and a connecting rod is provided between the two turntables, and the connecting rod is located between the boat support assembly and the arc-shaped plate, and a pad that can approach or move away from the boat dish on the boat support assembly is movably installed on the connecting rod, and the pad is opposite to the knocking piece.

[0013] Preferably, the box body is provided with a liftable barrel cover at the discharge port, a telescopic hose is connected between the barrel cover and the discharge port, a telescopic cylinder is fixedly provided at the bottom of the box body, and the telescopic cylinder is connected to the barrel cover.

[0014] The beneficial effects of the utility model are as follows: the utility model provides a powder turning and unloading device. Compared with the prior art, the utility model has at least the following technical effects: 1. By arranging a mechanism on the box body that can cooperate with the turning mechanism to knock the boat after turning the boat, knocking the boat to vibrate the boat and then vibrate the powder agglomerates on the boat, so that there are no powder agglomerates on the surface of the boat after unloading, so as to reduce the subsequent cleaning work, thereby helping to reduce the labor intensity. 2. The telescopic driving member of the knocking mechanism is arranged on the outside of the box body, and the knocking member extends into the box body through the first clearance hole, so that dust accumulation of the telescopic driving component can be avoided, ensuring its good working environment and helping to improve the service life. 3. By adding a crushing mechanism in the box body, the crushing knife of the crushing mechanism is driven by the elastic member to be pressed into the boat after the turning mechanism is turned over. When the boat is struck by high frequency, it will generate high frequency vibration relative to the crushing knife, and then it can cooperate with the crushing knife to crush and knock down the powder agglomerated on the inner wall of the boat, so that the powder in the boat can be completely removed. 4. By setting a limit rod, when the flip mechanism is in the initial state, the elastic member is prevented from driving the mounting rod to drive the crushing knife into the boat, so as to avoid the crushing mechanism interfering with the entry and exit of the boat. 5. A clearance opening is provided in the part of the turntable of the flip mechanism opposite to the boat support assembly, so that the window can be sealed by the rest of the turntable after the flip mechanism is flipped, so that the box is sealed and dust is prevented from floating out of the window during the dumping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a three-dimensional structural schematic diagram of a powder material turning and unloading device.

[0016] Figure 2 It is a schematic diagram of the connection relationship between the turning mechanism of the utility model and the crushing mechanism after turning over.

[0017] Figure 3 It is a schematic diagram of the connection relationship between the turning mechanism of the utility model and the crushing mechanism after turning over from another viewing angle.

[0018] Figure 4 It is a schematic diagram of the connection relationship between the turning mechanism of the utility model and the crushing mechanism after the arc plate is removed.

[0019] Figure 5 It is a schematic diagram of the connection relationship between the connecting rod and the cushion block of the turning mechanism of the utility model.

[0020] Figure 6 The utility model is a cross-sectional schematic diagram of an initial state of a powder material turning and unloading device.

[0021] Figure 7 The utility model is a cross-sectional schematic diagram of a powder material turning and unloading device in a turned-over state.

[0022] Explanation of the accompanying drawings: 1. Box body; 11. Window; 12. Limit rod; 2. Flip mechanism; 21. Turntable; 22. Boat support assembly; 221. Side plate; 222. Roller; 23. Motor; 24. Arc plate; 241. Second clearance hole; 25. Rotating shaft; 26. Connecting rod; 27. Pad; 28. Limit pin; 3. Knocking mechanism; 31. Telescopic drive member; 32. Knocking member; 4. Crushing mechanism; 41. Mounting rod; 42. Crushing knife; 43. Elastic member; 44. Fixing rod; 5. Barrel cover; 6. Telescopic hose; 7. Telescopic cylinder; 8. Boat. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] See also Figures 1 to 7 A powder turning and unloading device comprises a box 1, a turning mechanism 2 is arranged in the box 1, a window 11 opposite to the turning mechanism 2 is arranged on the box 1, the window 11 is used for a boat 8 to enter and exit the box 1, a boat placement position is arranged on the turning mechanism 2 for placing the boat 8, the turning mechanism 2 is used to drive the boat 8 to turn over, the box 1 is provided with a knocking mechanism 3 capable of telescopically knocking the boat 8, and a discharge port is arranged at the bottom of the box 1. By arranging a mechanism on the box 1 that can cooperate with the turning mechanism 2 to knock the boat 8 after turning over the boat 8, knocking the boat to vibrate the boat and thereby vibrate off the powder agglomerates adhering to the boat, so that there is no powder agglomerate adhering to the surface of the boat after unloading, so as to reduce the subsequent cleaning work, thereby helping to reduce the labor intensity.

[0025] See also Figures 1 to 3 Preferably, the knocking mechanism 3 includes a telescopic driving member 31 and a knocking member 32, wherein the telescopic driving member 31 is mounted on the box body 1, and the knocking member 32 is mounted on the telescopic driving member 31, and the knocking member 32 is opposite to the flipped boat. The telescopic driving member 31 is mounted on the upper surface of the box body 1, and a first clearance hole connected to the box body 1 is opened downward on the upper surface of the box body 1, and the knocking member 32 penetrates into the box body 1 through the first clearance hole. And the telescopic driving member 31 of the knocking mechanism 3 is arranged on the outside of the box body 1, and the knocking member 32 extends into the box body 1 through the first clearance hole, so that dust accumulation of the telescopic driving component can be avoided, and its working environment is ensured to be good, which helps to increase its service life.

[0026] See also Figures 1 to 7Preferably, a crushing mechanism 4 is provided in the box 1, and the crushing mechanism 4 includes a mounting rod 41 and a crushing knife 42. The mounting rod 41 is rotatably mounted on the flipping mechanism 2. An elastic member 43 is also connected between the mounting rod 41 and the flipping mechanism 2. The elastic member 43 is used to drive the mounting rod 41 to approach the boat. The crushing knife 42 is mounted on the mounting rod 41 and is opposite to the boat. After the flipping mechanism 2 is flipped, the crushing knife 42 can extend into the boat. After flipping, when the boat is hit by high frequency, high-frequency vibration relative to the crushing knife will be generated. The two will collide with each other, and then can cooperate with the crushing knife to crush and knock down the powder agglomerated on the inner wall of the boat, so that the powder in the boat can be completely removed.

[0027] See also Figures 1 to 7 Preferably, there are multiple mounting rods 41, and one end of the multiple mounting rods 41 away from the connection point with the flip mechanism 2 is commonly connected to a mounting plate; when the flip mechanism 2 is in the initial state, multiple pieces of the crushing knives 42 are spaced apart on the lower surface of the mounting plate, and a limit rod 12 is also provided in the box body 1, and the limit rod 12 avoids the movement track of the flip mechanism 2, and the limit rod 12 is used to block the mounting rod 41 from pressing down to approach the boat placement position. When the flip mechanism 2 is in the initial state, the elastic member 43 is prevented from driving the mounting rod 41 to drive the crushing knife 42 into the boat, so as to avoid the crushing mechanism 4 interfering with the boat in and out of the boat, so that the boat can smoothly pass through the window 11 and enter the flip mechanism 2 of the box body 1. The mounting rods are arranged in multiple pieces to be more evenly stressed, which is conducive to long-term stable use.

[0028] See also Figures 1 to 7Preferably, when the flip mechanism 2 is in an initial state, the boat is placed at the rear of the flip mechanism 2, the connection point between the mounting rod 41 and the flip mechanism 2 is located at the front side of the flip mechanism 2, one end of the mounting rod 41 away from the connection point with the flip mechanism 2 extends backward, the limiting rod 12 is fixed to the rear of the box body 1, the limiting rod 12 is parallel to the flip axis of the flip mechanism 2, the limiting rod 12 abuts against the lower side of the extended section of the mounting rod 41, and the crushing knife 42 does not extend into the boat; the elastic member 43 is a spring, one end of the spring is connected to the flip mechanism 2 (it can be a fixing rod 44 arranged between the two turntables of the flip mechanism 2), and the other end of the spring is connected to the middle part of the mounting rod 41. From the right side of the device, when the flip mechanism 2 flips counterclockwise, it can drive the boat on it to flip 180° around its center of circle, so that the boat flips downward. During the counterclockwise flipping process, since there is no limit rod 12 to block it, the installation rod 41 connected to the crushing knife 42 is affected by the spring so that the end opposite to the boat gradually approaches the boat and is inserted into the boat. When the flip mechanism 2 rotates clockwise to recover, since the limit rod 12 is set on the box body 1, when the flip mechanism 2 is almost completely recovered, the installation rod 41 contacts the limit rod 12 and cannot continue to rotate with the entire flip mechanism 2, so the crushing knife on it will be out of the boat, which can facilitate the subsequent empty boat to be taken out of the boat and the boat filled with powder to be pushed in again.

[0029] See also Figures 1 to 7 Preferably, the flip mechanism 2 comprises a turntable 21 rotatably mounted on the left and right walls of the box body 1, respectively. The boat placement position is arranged between the two turntables 21, and a boat holding assembly 22 is fixedly arranged at the boat placement position for placing the boat, and the turntable 21 is driven by a motor 23. The boat holding assembly 22 comprises a mounting frame, and the mounting frame comprises two side panels 221. When the flip mechanism 2 is in an initial state, a plurality of rollers 222 are arranged at intervals at the bottom of the two side panels 221. The left and right ends of the mounting frame are open, and the windows 11 are respectively provided on the left and right walls of the box body 1. A clearance opening is provided at a position of each turntable 21 opposite to the opening of the mounting frame; a plurality of limit pins 28 are respectively installed on the front and rear frames in the opening of the mounting frame to prevent the boat from falling out. A clearance opening is provided at the part of the turntable 21 of the turning mechanism 2 opposite to the boat support assembly 22, so that after the turning mechanism 2 is turned over, the window 11 can be sealed by the remaining part of the turntable 21, so that the box body 1 is sealed to prevent dust from floating out of the window 11 during the pouring of the powder.

[0030] See also Figures 1 to 7Preferably, the flipping mechanism 2 also includes an arc-shaped plate 24. When the flipping mechanism 2 is in an initial state, the left and right ends of the arc-shaped plate 24 are respectively fixed on the circumference of the bottom of the two turntables 21. The center of the two turntables 21 is fixedly connected with the same rotating shaft 25, and the two ends of the rotating shaft 25 are respectively rotatably connected to the left and right walls of the box body 1; the motor 23 is installed on the outside of the box body 1, and the output shaft of the motor 23 is transmission-connected with the rotating shaft 25; after the flipping mechanism 2 is flipped, the arc-shaped plate 24 is provided with a second clearance hole 241 at a position opposite to the knocking piece 32 and the mounting frame, and a connecting rod 26 is provided between the two turntables 21, and the connecting rod 26 is located between the boat support assembly 22 and the arc-shaped plate. A pad 27 that can approach or move away from the boat dish on the boat support assembly 22 is movably installed on the connecting rod 26, and the pad 27 is opposite to the knocking piece 32. The motor 23 is installed outside the housing 1, which can also prevent dust from falling on it, ensure that it is in a good working environment, and maintain long-term stable operation. The pad 27 is provided to prevent the knocking member 32 from directly contacting the boat. The hardness of the pad 27 can be between the boat and the knocking member 32, which can reduce the wear of the boat and the knocking member 32. The knocking member 32 can be a pneumatic shovel, and the telescopic drive member 31 can be a telescopic chamber, but it is not limited to this.

[0031] See also Figures 1 to 3 Preferably, the box body 1 is provided with a liftable barrel cover 5 at the discharge port, a telescopic hose 6 is connected between the barrel cover 5 and the discharge port, and a telescopic cylinder 7 is fixedly provided at the bottom of the box body 1, and the telescopic cylinder 7 is connected to the barrel cover 5. The height of the barrel cover 5 can be freely adjusted according to the height of the powder barrel under the box body 1, so that when the powder in the box body 1 is discharged from the discharge port, there is no gap between the upper end of the powder barrel and the barrel cover 5, so that no dust can be ensured to overflow.

[0032] The utility model has the following working principle:

[0033] The boat filled with powder is pushed onto the boat support assembly 22 through the window 11 at one end of the side wall of the box body 1 by an external device (in this process, the rollers 222 between the side plates 221 of the mounting frame can play a guiding role, and the gaps between the multiple rollers 222 can leave space for the knocking piece 32 to knock); after the boat is pushed into place, the motor 23 of the flipping mechanism 2 drives the rotating shaft 25 to rotate, thereby driving the turntable 21 to rotate, that is, driving the boat support assembly 22 to flip 180° around the rotating shaft 25. During the flipping process, the limit pin 28 can prevent the boat from falling off, and during the flipping process, the boat assembly approaches the crushing mechanism 4 blocked by the limit rod 12. When the turntable 21 drives the boat support assembly 22 to rotate past the position of the limit rod 12, the crushing knife is pressed into the boat, and then the crushing mechanism 4 rotates synchronously with the flipping mechanism 2 until the flipping mechanism 2 is turned. After the structure 2 is turned over 180°, it stops, and the boat is just facing downward; the knocking mechanism 3 starts to work, and the telescopic driving member 31 drives the knocking member 32 to pass through the first and second clearance holes 241 to abut against the pad 27, and then the knocking member 32 works to quickly knock the pad 27, and the pad 27 transmits the vibration to the boat, and the boat quickly shakes the powder agglomerates adhered to its inner wall and gradually shakes off. At the same time, the crushing knife collides with the boat relative to each other, and the powder agglomerates that are more firmly adhered to the inner wall of the peripheral surface can be crushed and shaken off; after the boat unloading is completed, the motor 23 drives the turning mechanism 2 to turn over, and at the end of the formation of the turning mechanism 2 being reset, there is a limit rod 12 to prevent the mounting rod 41 from continuing to rotate with the turning mechanism 2, so that the crushing knife can be disengaged from the boat, so that the boat can be pushed out from the other end of the boat supporting assembly 22 through the clearance port of the turntable 21 and the window 11 of the box body 1.

[0034] Several points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, and can be mechanical or electrical connections, or internal connectivity between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change.

[0035] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0036] Finally, the above is only a preferred implementation of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0037] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the utility model should also be regarded as within the protection scope of the utility model.

Claims

1. A powder turning and unloading device, characterized in that: It comprises a box body, a flipping mechanism is arranged inside the box body, a window opposite to the flipping mechanism is arranged on the box body, the window is used for boats to enter and exit the box body, a boat placement position is arranged on the flipping mechanism for placing the boats, the flipping mechanism is used to drive the boats to flip, the box body is provided with a knocking mechanism which can be extended and knocked on the boats, and a discharge port is arranged at the bottom of the box body.

2. A powder material turning and unloading device according to claim 1, characterized in that: The knocking mechanism comprises a telescopic driving member and a knocking member, wherein the telescopic driving member is mounted on the box body, and the knocking member is mounted on the telescopic driving member, and the knocking member is opposite to the turned over boat.

3. A powder material turning and unloading device according to claim 2, characterized in that: The telescopic driving member is installed on the upper surface of the box body. The upper surface of the box body is downwardly provided with a first clearance hole connected to the box body, and the knocking member is inserted into the box body through the first clearance hole.

4. A powder material turning and unloading device according to claim 2, characterized in that: A crushing mechanism is provided in the box body, and the crushing mechanism includes a mounting rod and a crushing knife. The mounting rod is rotatably mounted on the flipping mechanism. An elastic member is also connected between the mounting rod and the flipping mechanism, and the elastic member is used to drive the mounting rod to approach the boat. The crushing knife is mounted on the mounting rod and opposite to the boat. After the flipping mechanism is flipped, the crushing knife can extend into the boat.

5. A powder material turning and unloading device according to claim 4, characterized in that: There are multiple mounting rods, and one end of the multiple mounting rods away from the connection point with the flipping mechanism is commonly connected to a mounting plate; when the flipping mechanism is in an initial state, multiple crushing knives are arranged at intervals on the lower surface of the mounting plate, and a limit rod is also provided in the box body, the limit rod avoids the movement trajectory of the flipping mechanism, and the limit rod is used to block the mounting rod from pressing down close to the boat placement position.

6. A powder material turning and unloading device according to claim 5, characterized in that: When the flipping mechanism is in an initial state, the boat is placed at the rear of the flipping mechanism, the connection point between the mounting rod and the flipping mechanism is located at the front side of the flipping mechanism, one end of the mounting rod away from the connection point with the flipping mechanism extends backward, the limit rod is fixed at the rear of the box body, the limit rod is parallel to the flipping axis of the flipping mechanism, the limit rod abuts against the lower side of the extension section of the mounting rod, and the crushing knife does not extend into the boat.

7. A powder material turning and unloading device according to claim 4, characterized in that: The flip mechanism includes turntables rotatably mounted on the left and right walls of the box body respectively, the boat placement position is arranged between the two turntables, and a boat supporting assembly is fixedly arranged at the boat placement position for placing the boat, and the turntable is driven by a motor.

8. A powder material turning and unloading device according to claim 7, characterized in that: The boat support assembly includes a mounting frame, which includes two side panels. When the flip mechanism is in an initial state, a plurality of rollers are spaced apart at the bottom of the two side panels. The left and right ends of the mounting frame are open, and the windows are respectively provided on the left and right walls of the box body. A clearance opening is provided at a position of each turntable opposite to the opening of the mounting frame. A plurality of limit pins are respectively installed on the front and rear frames in the opening of the mounting frame to prevent the boat from falling out.

9. A powder material turning and unloading device according to claim 8, characterized in that: The flipping mechanism also includes an arc-shaped plate. When the flipping mechanism is in an initial state, the left end and the right end of the arc-shaped plate are respectively fixed on the circumference of the bottom of the two turntables. The centers of the two turntables are fixedly connected with the same rotating shaft. The two ends of the rotating shaft are respectively rotatably connected to the left and right walls of the box body. The motor is installed on the outside of the box body, and the output shaft of the motor is transmission-connected to the rotating shaft. After the flipping mechanism is flipped, the arc-shaped plate is provided with a second clearance hole at a position opposite to the knocking piece and the mounting frame. A connecting rod is provided between the two turntables, and the connecting rod is located between the boat support assembly and the arc-shaped plate. A pad that can approach or move away from the boat dish on the boat support assembly is movably installed on the connecting rod, and the pad is opposite to the knocking piece.

10. The powder material turning and unloading device according to claim 1, characterized in that: The box body is provided with a lifting barrel cover at the discharge port, a telescopic hose is connected between the barrel cover and the discharge port, a telescopic cylinder is fixedly provided at the bottom of the box body, and the telescopic cylinder is connected to the barrel cover.

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