core-drawing device

Abstract

The application provides a core pulling device, which comprises a barrel, a core, a sliding assembly and a limiting assembly. The barrel is internally hollow and has an open front end. The core is longitudinally movable into or out of the barrel. The sliding assembly comprises a sliding piece arranged at the bottom of the core and longitudinally movable relative to the barrel. The limiting assembly comprises an upper limiting piece and a lower limiting piece. The upper limiting piece is arranged in the barrel and connected to the top wall of the barrel, and the upper limiting piece and the open front end of the barrel are longitudinally spaced. The lower limiting piece is connected to the top of the core. The lower limiting piece is longitudinally movable with the core, and when the core is moved to be accommodated in the barrel, the lower limiting piece can abut against the upper limiting piece, and one end of the core is fixedly connected to the open front end of the barrel, thereby limiting the longitudinal and vertical displacement of the core.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of core pulling equipment, and particularly relates to a core pulling equipment. BACKGROUND

[0002] The core pulling equipment is a general term of all the equipment capable of pulling the core from the shell, and the core pulling equipment can be an electric heater, a tube-shell heat exchanger or a coil heat exchanger, etc., wherein the core can be a heating tube bundle of the electric heater, a heat exchange tube bundle of the tube-shell heat exchanger, etc.

[0003] Among them, for the assembly of the core and the shell, in the prior art, only a support is often arranged between the bottom of the core and the bottom wall of the shell, and one end of the core in the length direction is fixed with the shell, and the other end is supported on the shell by gravity. However, for the core with a relatively long length, the end part is prone to shaking due to the bumping of the core during transportation caused by the road conditions, which is easy to cause damage to the core. SUMMARY

[0004] The purpose of the present application is to provide a core pulling equipment capable of limiting the core.

[0005] To solve the above technical problems, the present application adopts the following technical solutions:

[0006] According to one aspect of the present application, the present application provides a core pulling equipment, comprising:

[0007] a shell, which is hollow inside, and the front end of the shell is open;

[0008] a core, which is capable of moving into or out of the shell in the longitudinal direction;

[0009] a sliding assembly, which comprises a sliding piece arranged at the bottom of the core, and the sliding piece is capable of moving in the longitudinal direction relative to the shell;

[0010] a limiting assembly, which comprises an upper limiting piece and a lower limiting piece, the upper limiting piece is located in the shell and connected to the top wall of the shell, and the upper limiting piece and the opening of the shell have a gap in the longitudinal direction, and the lower limiting piece is connected to the top of the core;

[0011] Among them, the lower limiting piece is capable of moving in the longitudinal direction with the core, and when the core is moved to be accommodated in the inside of the shell, the lower limiting piece is capable of abutting against the upper limiting piece, and one end of the core in the longitudinal direction is connected and fixed with the front end of the shell, so as to limit the displacement of the core in the longitudinal direction and in the vertical direction.

[0012] In some embodiments, the bottom of the upper limiting piece is provided with an upper limiting surface inclined upward and rearward from top to bottom;

[0013] The top of the lower limiting part is provided with a lower limiting surface which is inclined rearward from top to bottom;

[0014] The upper limiting surface is parallel to the lower limiting surface, and the upper limiting surface can abut against the lower limiting surface.

[0015] In some embodiments, the limiting assembly further comprises an adjusting part which is arranged through the lower limiting part and the core body, and is used for adjusting the vertical spacing between the lower limiting part and the core body.

[0016] In some embodiments, the bottom of the lower limiting part is provided with a limiting slot which is open downward;

[0017] The core body is provided with a through hole which corresponds to the limiting slot, and the inner periphery of the through hole is provided with an internal thread;

[0018] The outer periphery of the adjusting part is provided with an external thread which matches the internal thread, the adjusting part is arranged through the through hole and extends upward into the limiting slot, and the adjusting part can be lifted relative to the through hole to lift the lower limiting part vertically.

[0019] In some embodiments, the limiting assembly comprises a mounting rack which is protruded downward on the top wall of the barrel shell, and the upper limiting part is connected with the barrel shell through the mounting rack;

[0020] The upper limiting part and the mounting rack are connected and fixed through a plurality of first fasteners;

[0021] The lower limiting part and the core body are connected and fixed through a plurality of second fasteners.

[0022] In some embodiments, the sliding assembly comprises two sliding parts which are arranged on the bottom of the lateral ends of the core body;

[0023] The sliding assembly further comprises two guide parts which are arranged on the bottom wall of the barrel shell in lateral spacing, the two guide parts and the two sliding parts are one-to-one slidingly matched, each guide part extends in the longitudinal direction, and the sliding part can slide along the guide part.

[0024] In some embodiments, at least one support assembly is arranged at each of the lateral ends of the core body, and each support assembly is attached to the side wall of the barrel shell to cooperate with the limiting of the position of the core body in the lateral direction.

[0025] In some embodiments, each support assembly is located at the upper part of the rear end of the core body.

[0026] Each support assembly comprises a roller and a support frame which connects the roller and the core body, the roller and the support frame are rotatably connected, the roller is attached to the side wall of the barrel shell and can rotate along the side wall of the barrel shell.

[0027] In some embodiments, the support frame comprises a main body and at least two support rods on a side of the main body away from the core body, and the main body is fixedly connected with the core body;

[0028] The support assembly further comprises a connecting frame penetrating the at least two support rods, and the roller is rotatably connected with the connecting frame through a connecting shaft.

[0029] In some embodiments, each support assembly further comprises an elastic member connected between the connecting frame and the main body, and the elastic member is located between the at least two support rods;

[0030] The elastic member can stretch and contract in the transverse direction.

[0031] From the above technical solution, the present application has at least the following advantages and positive effects:

[0032] In the present application, the core-pulling device comprises a barrel shell, a core body, a sliding assembly and a limiting assembly. The barrel shell is hollow inside and has an open front end. The core body can move into or out of the barrel shell in the longitudinal direction. The sliding assembly comprises a sliding member arranged at the bottom of the core body, and the sliding member can move relative to the barrel shell in the longitudinal direction. The limiting assembly comprises an upper limiting member and a lower limiting member. The upper limiting member is located inside the barrel shell and connected to the top wall of the barrel shell, and the upper limiting member and the open end of the barrel shell have a longitudinal spacing. The lower limiting member is connected to the top of the core body. The lower limiting member can move with the core body in the longitudinal direction, and when the core body is moved to be accommodated inside the barrel shell, the lower limiting member can abut against the upper limiting member, and one end of the core body in the longitudinal direction is fixedly connected to the front end of the barrel shell, thereby limiting the displacement of the core body in the longitudinal direction and in the vertical direction.

[0033] In the above core-pulling device, the lower limiting member can abut against the upper limiting member when the core body is moved to be accommodated inside the barrel shell, and can cooperate with the sliding assembly to limit the displacement of the core body in the vertical direction, i.e. to prevent the core body from shaking up and down. Moreover, one end of the core body in the longitudinal direction is fixedly connected to the front end of the barrel shell, and cooperates with the limiting assembly to limit the displacement of the core body in the longitudinal direction. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a structural schematic view of the core-pulling device in the present embodiment;

[0035] Figure 2 is a cross-sectional schematic view of the sliding assembly in the present embodiment;

[0036] Figure 3 is a structural schematic view of the limiting assembly in the present embodiment;

[0037] Figure 4 is a structural schematic view of the support assembly in the present embodiment.

[0038] The reference signs are explained as follows:

[0039] 1. a barrel shell;

[0040] 21. a frame; 211. a top longitudinal beam; 212. a bottom longitudinal beam;

[0041] 3. a sliding assembly; 31. a sliding piece; 311. a pulley; 312. a fixing frame; 313. a rotating shaft; 314. a metal shaft sleeve; 32. a guide piece;

[0042] 4. a limiting assembly; 41. an upper limiting piece; 42. a lower limiting piece; 43. a mounting frame; 44. a first fastener; 45. a second fastener; 46. an adjusting piece;

[0043] 5. a supporting assembly; 51. a roller; 52. a supporting frame; 521. a main body; 522. a supporting rod; 53. a connecting frame; 531. a main body; 532. a connecting plate; 54. an elastic piece; 55. a connecting shaft. DETAILED DESCRIPTION

[0044] The typical embodiments embodying the features and advantages of the present application are specifically set forth in the following description. It should be understood, however, that the present application can be practiced in a variety of embodiments other than those specifically described, without departing from the scope of the present application. The following description and drawings are illustrative of the present application and are not to be construed as limiting the present application.

[0045] In the description of the present application, it is to be understood that the indications of directions or positional relationships (such as up, down, left, right, front, back, etc.) in the embodiments shown in the drawings are merely for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the positions of these elements change, the indications of directions will change accordingly.

[0046] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0047] The specific embodiments of the core pulling device of the present application will be described in detail below with reference to the accompanying drawings.

[0048] Figure 1 The structure of the core pulling device in the present embodiment is shown in the schematic view.

[0049] Reference Figure 1The embodiment provides a core drawing device, which comprises a barrel shell 1, a core, a sliding assembly 3 and a limiting assembly 4. The core drawing device is a general term of all devices capable of drawing the core from the barrel shell 1, and can be an electric heater, a tube shell heat exchanger or a coil pipe heat exchanger.

[0050] The barrel shell 1 is hollow, and one end of the barrel shell 1 is open to form a containing space for containing the core.

[0051] For the convenience of description, it is defined that the axial direction of the barrel shell 1 is the longitudinal direction, the direction perpendicular to the longitudinal direction in the horizontal plane is the transverse direction, the direction along the longitudinal direction and towards the opening is the front direction, and the reverse direction is the back direction, and the direction towards the containing space is the inner direction, and the reverse direction is the outer direction.

[0052] That is to say, referring to the view direction of Figure 1 , the left-right direction is the longitudinal direction, wherein the left side is the front direction, and the right side is the back direction, and the front end of the barrel shell 1 is open.

[0053] In the embodiment, the cross section of the barrel shell 1 is circular. In other embodiments, the cross section of the barrel shell 1 can also be square or other shapes.

[0054] At least two supports are arranged on the bottom of the barrel shell 1 along the longitudinal direction, and the supports are located outside the barrel shell 1 and are supported between the barrel shell 1 and a support surface.

[0055] In the embodiment, the core can be a heating pipe bundle of an electric heater or a heat exchange pipe bundle of a tube shell heat exchanger, and the specific arrangement is determined according to the needs.

[0056] The core comprises a frame 21 and a heating module arranged inside the frame 21.

[0057] The frame 21 comprises a top frame and a bottom frame arranged in an up-down direction, an end cover connected to the front ends of the top frame and the bottom frame, and two vertical columns arranged in the barrel shell 1 and connected to the rear ends of the top frame and the bottom frame.

[0058] The top frame comprises two top longitudinal beams 211 extending along the longitudinal direction and a top end beam extending along the transverse direction. The two top longitudinal beams 211 are arranged in the transverse direction, and the front ends of the two top longitudinal beams 211 are connected to the end cover. The top end beam is connected to the rear ends of the two top longitudinal beams 211.

[0059] The bottom frame comprises two bottom longitudinal beams 212 extending along the longitudinal direction and a bottom end beam extending along the transverse direction. The two bottom longitudinal beams 212 are arranged in the transverse direction, and the front ends of the two bottom longitudinal beams 212 are connected to the end cover. The bottom end beam is connected to the rear ends of the two bottom longitudinal beams 212.

[0060] In the embodiment, the rear end of the end cover is open, and the end cover has a concave surface facing the rear end. Specifically, the cross section of the end cover is circular.

[0061] The top ends of the two vertical columns are fixedly connected with the rear ends of the two top longitudinal beams 211 respectively, and the bottom ends of the two vertical columns are fixedly connected with the rear ends of the two bottom longitudinal beams 212 respectively.

[0062] Further, at least one reinforcing beam extending transversely is connected between the two vertical columns to reinforce the stability of the two vertical columns.

[0063] The core body can move into or out of the barrel 1 along the longitudinal direction. When the core body moves into the accommodating space inside the barrel 1, the longitudinal end of the core body is fixedly connected with the front end of the barrel 1. Specifically, the end cover of the core body is annularly provided with a first flange plate, and the outer periphery of the front end of the barrel 1 is annularly provided with a second flange plate. When the core body moves into the accommodating space inside the barrel 1, the first flange plate and the second flange plate can abut against each other and are fixedly connected through a plurality of bolts, so as to realize the connection and fixation of the end cover with the barrel 1, and further realize the connection and fixation of the longitudinal end of the core body with the front end of the barrel 1, so as to support the core body.

[0064] In the embodiment, the core body enters or exits the barrel 1 through the sliding assembly 3.

[0065] The sliding assembly 3 includes a sliding piece 31 arranged at the bottom of the core body. The sliding piece 31 can move along the longitudinal direction relative to the barrel 1, so as to facilitate the core body to enter or exit the accommodating space of the barrel 1 along the longitudinal direction, so as to facilitate the installation of the core body with the barrel 1, or to take out the core body from the barrel 1 for maintenance or replacement.

[0066] In the embodiment, the sliding assembly 3 includes two sliding pieces 31 arranged at the bottom of the two longitudinal beams 212 respectively.

[0067] Each sliding piece 31 includes at least two pulley 311 groups arranged at the bottom of the longitudinal beam 212 along the longitudinal direction. Each pulley 311 group includes at least one pulley 311. Each pulley 311 is fixedly connected with the longitudinal beam 212 through a fixed frame 312, and is rotatably connected with the fixed frame 312 through a rotating shaft 313. The axis of each pulley 311 extends along the transverse direction, and the rotating shaft 313 extends along the transverse direction.

[0068] Specifically, in the embodiment, each sliding piece includes three pulleys 311 arranged along the longitudinal direction and fixedly connected with the longitudinal beam 212 through the same fixed frame 312.

[0069] Figure 2 The cross-sectional view of the sliding assembly 3 in the embodiment.

[0070] Reference Figure 1 and Figure 2In the present embodiment, each pulley 311 is a groove pulley, i.e., the middle part of each pulley 311 is recessed in the circumferential direction toward the axis of the pulley 311, so that the outer diameter of the middle part of each pulley 311 is smaller than the outer diameter of the upper and lower ends thereof.

[0071] Further, the outer periphery of the rotating shaft 313 is provided with a metal shaft sleeve 314 to ensure accuracy and accommodate the durability of large weight rotation.

[0072] The sliding assembly 3 further comprises two guide members 32 spaced apart in the lateral direction and arranged on the bottom wall of the barrel shell 1, the two guide members 32 being located in the accommodation space, the two guide members 32 and the two sliding members 31 being in one-to-one sliding cooperation, each guide member 32 extending in the longitudinal direction, the guide member 32 being capable of guiding the sliding member 31 so that the sliding member 31 can slide along the guide member 32. Moreover, the guide member 32 cooperates with the sliding member 31 to support the bottom of the core.

[0073] Reference Figure 1 and Figure 2 In the present embodiment, the upper part of the guide member 32 is located in the recessed middle part of the pulley 311, the circumferential side wall of the recessed part of each pulley 311 abuts against the top and the lateral sides of the guide member 32, each pulley 311 cooperates with the guide member 32 to limit the position of the pulley 311, which can effectively prevent derailment due to improper force direction, so that each pulley 311 can better slide along the guide member 32.

[0074] In other embodiments, the top of the guide member 32 has an opening to form a guide groove. At this time, each pulley 311 can be cylindrical, each pulley 311 is at least partially located in the guide groove, and the outer peripheral surface of each pulley 311 abuts against the circumferential side wall of the guide groove of the guide member 32, so that it can relatively slide along the guide groove.

[0075] In the present embodiment, the guide member 32 is made of light rail.

[0076] The limiting assembly 4 comprises an upper limiting member 41 and a lower limiting member 42.

[0077] The upper limiting member 41 is located in the barrel shell 1 and connected to the top wall of the barrel shell 1, and the opening of the barrel shell 1 and the upper limiting member 41 have a spacing in the longitudinal direction, and the lower limiting member 42 is connected to the top of the core. Among them, the lower limiting member 42 can move with the core in the longitudinal direction, and when the core is moved to be accommodated in the barrel shell 1, the lower limiting member 42 can abut against the upper limiting member 41, which can cooperate with the sliding assembly 3 to limit the vertical displacement of the core, i.e., to prevent the core from shaking up and down. Moreover, since one end of the core in the longitudinal direction is connected and fixed to the front end of the barrel shell 1, and cooperates with the limiting assembly 4 to limit the longitudinal displacement of the core.

[0078] Figure 3 It is a structural schematic view of the limiting assembly 4 in the present embodiment.

[0079] Reference Figure 1 and Figure 3 The limiting assembly 4 further comprises a mounting bracket 43 protruding downwardly from the top wall of the barrel shell 1, and the upper limiting member 41 is connected with the barrel shell 1 through the mounting bracket 43. Specifically, the top of the mounting bracket 43 is fixedly connected with the top wall of the barrel shell 1, and the bottom of the mounting bracket 43 is fixedly connected with the upper limiting member 41 through a plurality of first fasteners 44, so as to realize the installation of the upper limiting member 41.

[0080] In the embodiment, the upper limiting member 41 is connected with the top wall of the barrel shell 1 near the rear end through the mounting bracket 43. In other embodiments, the upper limiting member 41 can also be arranged at any position from the axial center to the rear end of the barrel shell 1 through the mounting bracket 43, which is specifically selected according to actual needs.

[0081] The bottom of the upper limiting member 41 is provided with an upper limiting surface inclined upwardly and rearwardly.

[0082] In the embodiment, the cross section of the upper limiting member 41 is trapezoidal. In other embodiments, the cross section of the upper limiting member 41 can be triangular, which is specifically arranged according to needs and is not limited herein.

[0083] The lower limiting member 42 is fixedly connected with the core body through a plurality of second fasteners 45. Specifically, the lower limiting member 42 is fixedly connected with the top longitudinal beam 211 through the plurality of second fasteners 45, and the lower limiting member 42 is located at the rear end of the top longitudinal beam 211 in the length direction. When the core body is moved to be accommodated in the barrel shell 1, the upper limiting member 41 and the lower limiting member 42 abut against each other. At this time, the limiting assembly 4 can cooperate with the sliding assembly 3 to limit the position of the rear end of the core body in the vertical direction, so as to prevent the rear end of the core body from swinging up and down during transportation, thereby protecting the core body. In other embodiments, the lower limiting member 42 is arranged at any position from the center to the rear end of the top longitudinal beam 211 in the length direction, which is specifically arranged according to the position of the upper limiting member 41.

[0084] The top of the lower limiting member 42 is provided with a lower limiting surface inclined upwardly and rearwardly, and the upper limiting surface and the lower limiting surface are parallel to each other. When the core body is moved to be accommodated in the barrel shell 1, the upper limiting surface and the lower limiting surface can abut against each other, so as to limit the core body from moving further rearwardly.

[0085] In the embodiment, the number of the upper limiting members 41 is two, and the number of the lower limiting members 42 is also two. The two lower limiting members 42 are arranged one by one on the top of the rear end of the top longitudinal beam 211, and the two lower limiting members 42 are located on the same straight line extending in the transverse direction. The two upper limiting members 41 are arranged in two rows at the bottom of the two ends of the mounting bracket 43 in the transverse direction. When the core body is moved to be accommodated in the barrel shell 1, the two upper limiting members 41 abut against the top of the two lower limiting members 42 one by one.

[0086] Further, the limiting assembly 4 further comprises an adjusting member 46, which is arranged through the lower limiting member 42 and the core body, and is used to adjust the vertical interval between the lower limiting member 42 and the core body, and finely adjust the vertical position of the lower limiting surface, so that when the core body is moved to be accommodated in the barrel shell 1, the lower limiting surface of the lower limiting member 42 can abut against the upper limiting surface of the upper limiting member 41.

[0087] In the embodiment, the outer periphery of the adjusting member 46 is provided with external threads. The bottom of the lower limiting member 42 is provided with a downwardly open limiting groove, and the core body is provided with a through hole corresponding to the limiting groove, and the inner periphery of the through hole is provided with internal threads, and the external threads of the outer periphery of the adjusting member 46 are matched with the internal threads of the inner periphery of the through hole. The adjusting member 46 is arranged vertically through the through hole and extends upwardly into the limiting groove, and the adjusting member 46 can be lifted and lowered relative to the through hole to lift and lower the lower limiting member 42 vertically.

[0088] Specifically, the top longitudinal beam 211 is provided with a through hole, and the top longitudinal beam 211 is fixedly connected with a nut, and the nut is located below the through hole, and the threaded hole in the middle of the nut is communicated with the through hole to form a through hole, and at this time, the external threads of the outer periphery of the adjusting member 46 are matched with the internal threads of the inner periphery of the threaded hole. The adjusting member 46 passes through the threaded hole, the through hole and extends upwardly into the limiting groove in sequence from bottom to top, and the top of the adjusting member 46 abuts against the top wall of the limiting groove. When it is necessary to adjust the interval between the lower limiting member 42 and the core body, the adjusting member 46 is rotated relative to the nut by rotating the adjusting rod, and is lifted and lowered vertically, and then the lower limiting member 42 is lifted upwardly or is lowered downwardly, so as to adjust the vertical position of the lower limiting surface.

[0089] Reference Figure 1 Further, each of the transversely two ends of the core body is provided with at least one supporting assembly 5, and when the core body is moved into or out of the accommodating space of the barrel shell 1 along the longitudinal direction, the supporting assemblies 5 located at the transversely two ends of the core body are respectively fitted with the transversely two side walls of the barrel shell 1, and are used to cooperate with the core body to limit the position of the core body along the transverse direction, so as to prevent the core body from shaking along the transverse direction during transportation. At the same time, the supporting assemblies 5 can also guide the core body when the core body is moved into or out of the accommodating space of the barrel shell 1 along the longitudinal direction, and guide the movement of the core body and avoid the bottom of the core body from being separated from the guide member 32.

[0090] In the embodiment, each of the transversely two ends of the core body is provided with one supporting assembly 5, and each supporting assembly 5 is located at the upper portion of the rear end of the core body. Specifically, each top longitudinal beam 211 is correspondingly provided with one supporting assembly 5 on the transversely outer side, and each supporting assembly 5 is located at the rear end of each top longitudinal beam 211. At this time, the straight line where the two supporting assemblies 5 are located extends along the transverse direction, and can balance the support of the two ends of the core body along the transverse direction, and prevent the rear end of the core body from colliding with the inner side wall of the barrel shell 1 due to shaking along the transverse direction during transportation.

[0091] Figure 4 It is a structural schematic view of the supporting assembly 5 in the embodiment.

[0092] With reference to Figure 4 Each support assembly 5 comprises a roller 51 and a support frame 52 connecting the roller 51 and the core.

[0093] The support frame 52 comprises a main body 521 and at least two support rods 522 arranged on a side of the main body 521 away from the core. The main body 521 is fixedly connected with the core. Specifically, the main body 521 is fixedly connected with the top longitudinal beam 211. The number of the support rods 522 is four, and the four support rods 522 are circumferentially spaced on the main body 521.

[0094] The roller 51 is rotatably connected with the support frame 52, and the roller 51 is attached to the side wall of the barrel shell 1 and can rotate along the side wall of the barrel shell 1. Specifically, the support assembly 5 further comprises a connecting frame 53 penetrating the at least two support rods 522, and the roller 51 is rotatably connected with the connecting frame 53 through a connecting shaft 55.

[0095] The connecting frame 53 comprises a body 531 and two connecting plates 532 arranged on the lateral sides of the body 531 and spaced upward and downward. The body 531 penetrates the four support rods 522 and can slide along the four support rods 522 to adjust the lateral spacing between the body 531 and the main body 521. The roller 51 is arranged at the spacing between the two connecting plates 532 in a state that the axis of the roller 51 extends vertically, and a connecting shaft 55 penetrates the two connecting plates 532 and the roller 51 to rotatably connect the roller 51 and the connecting frame 53. When the core enters or exits the accommodating space of the barrel shell 1 along the longitudinal direction, the roller 51 can be attached to the side wall of the barrel shell 1, and the body 531 can slide along the four support rods 522, so that the connecting plates 532 can drive the roller 51 to move laterally to approach or move away from the core. The two rollers 51 can simultaneously move laterally to approach or move away from each other according to the radial dimension of the barrel shell 1 to adjust the distance between the lateral sides of the two rollers 51 to adapt to the barrel shell 1 with different radial dimensions.

[0096] Further, each support assembly 5 further comprises an elastic member 54 connected between the connecting frame 53 and the main body 521, and the elastic member 54 is located between at least two support rods 522, and the elastic member 54 is transversely stretchable. That is to say, the elastic member 54 is located between four support rods 522. In the embodiment, the elastic member 54 is arranged between the body 531 of the connecting frame 53 and the main body 521 of the support frame 52, so as to elastically support the connecting frame 53 and the roller 51, so that the two support assemblies 5 can prevent the sliding member 31 located at the bottom of the core from being separated from the guide member 32 while ensuring the transverse limiting of the core, and the roller 51 can stably slide away from or close to the inner side wall of the barrel 1 along the support rod 522 together with the connecting frame 53, so as to adjust the friction force between the outer periphery of the roller 51 and the inner side wall of the barrel 1, so as to ensure that the roller 51 can slide along the inner side wall of the barrel 1, and further ensure the smoothness of the longitudinal movement of the core.

[0097] In the embodiment, the elastic member 54 can be a spring.

[0098] Exemplarily, one assembly process of the core and the barrel 1 is listed as follows:

[0099] Firstly, the lower limiting member 42 and the core are adjusted along the vertical direction by rotating the adjusting member 46, that is, the position of the lower limiting surface along the vertical direction is adjusted. Then, the two sliding members 31 are respectively abutted to the two guide members 32, and the outer periphery of the roller 51 of the two support assemblies 5 is abutted to the inner side wall of the barrel 1 on the two transverse sides. Then, an external force is applied to the core, so that the core enters the accommodating space of the barrel 1 from the front opening of the barrel 1 along the longitudinal direction. At this time, the sliding member 31 slides from front to back along the guide member 32, and the roller 51 of the two support assemblies 5 slides along the inner side wall of the barrel 1, so as to guide the core to move backward, and limit the transverse shaking of the rear end of the core. When the lower limiting member 42 located at the top of the core abuts against the lower limiting member 42 located at the top wall of the barrel 1, the rear end of the core can be limited along the vertical direction by cooperating with the sliding assembly 3, so as to prevent the core from shaking up and down. Then, the external force applied to the core is stopped, and the end cover of the core is connected and fixed with the front end of the barrel 1, so as to limit the longitudinal displacement of the core by cooperating with the limiting assembly 4.

[0100] From the above technical solution, the present application has at least the following advantages and positive effects:

[0101] The lower limiting member can move along the longitudinal direction with the core, and when the core is accommodated in the barrel, the lower limiting member can abut against the upper limiting member, so as to limit the vertical displacement of the core by cooperating with the sliding assembly, that is, to prevent the core from shaking up and down. Moreover, one end of the core is connected and fixed with the front end of the barrel, and the longitudinal displacement of the core is limited by cooperating with the limiting assembly.

[0102] Further, the limiting assembly further comprises an adjusting member, which is arranged between the lower limiting member and the core body, for adjusting the vertical distance between the lower limiting member and the core body, and finely adjusting the vertical position of the lower limiting surface, so that when the core body is moved into the accommodating space in the barrel shell, the lower limiting surface of the lower limiting member can abut against the upper limiting surface of the upper limiting member.

[0103] Further, each of the two ends of the core body is provided with at least one supporting assembly, which is in contact with the two lateral walls of the barrel shell when the core body is moved into or out of the accommodating space in the barrel shell, for cooperating with the core body to limit the lateral position of the core body, preventing the core body from shaking laterally during transportation. Meanwhile, the supporting assembly can also guide the core body when it is moved into or out of the accommodating space in the barrel shell, guiding the movement of the core body and preventing its bottom from being separated from the guiding member.

[0104] Although the present application has been described with reference to several exemplary embodiments, it is understood that the words that have been used are words of description and illustration, rather than words of limitation. Since the present application can be embodied in various forms without departing from the spirit or essential characteristics thereof, it is understood that the embodiments are not limited to any particular details, but are capable of changes in certain particulars, and are thus to be understood within the spirit and scope of the claims appended hereto, therefore all changes and modifications that fall within the meaning and range of equivalency of the claims are intended to be embraced therein as part of the invention.

Claims

1. A core-pulling device, characterized in that, include: A cylindrical shell, which is hollow inside and has an opening at the front end; The core is capable of moving longitudinally to enter or exit the cylindrical shell; The sliding assembly includes two sliding members disposed at the bottom of the two transverse ends of the core and two guide members disposed transversely on the bottom wall of the cylindrical shell. The two guide members and the two sliding members are slidably engaged in a one-to-one correspondence. Each guide member extends longitudinally, and the sliding member can slide along the guide member, so that the sliding member can move longitudinally relative to the cylindrical shell. A limiting assembly includes an upper limiting member and a lower limiting member. The upper limiting member is located inside the cylindrical shell and connected to the top wall of the cylindrical shell, and the upper limiting member is longitudinally spaced from the opening of the cylindrical shell. The lower limiting member is connected to the top of the core. The bottom of the upper limiting member is provided with an upper limiting surface that slopes backward from top to bottom. The top of the lower limiting member is provided with a lower limiting surface that slopes backward from top to bottom. The upper limiting surface and the lower limiting surface are parallel and can abut against each other. The lower limiting member can move longitudinally with the core, and when the core moves to be housed inside the cylindrical shell, the lower limiting member can abut against the upper limiting member, and one longitudinal end of the core is connected and fixed to the front end of the cylindrical shell, thereby limiting the displacement of the core in both the longitudinal and vertical directions.

2. The core-pulling device according to claim 1, characterized in that, The limiting component also includes an adjusting member, which passes through the lower limiting member and the core, and is used to adjust the vertical spacing between the lower limiting member and the core.

3. The core-pulling device according to claim 2, characterized in that, The lower limiting component has a downward-facing limiting groove at its bottom; The core is provided with a through hole corresponding to the limiting groove, and the inner circumference of the through hole is provided with an internal thread; The outer periphery of the adjusting member is provided with an external thread that matches the internal thread. The adjusting member passes through the through hole and extends upward into the limiting groove. The adjusting member can be raised and lowered relative to the through hole, thereby causing the lower limiting member to rise and fall vertically.

4. The core-pulling device according to claim 1, characterized in that, The limiting component includes a mounting bracket that protrudes downward from the top wall of the cylindrical shell, and the upper limiting component is connected to the cylindrical shell through the mounting bracket; The upper limit component is connected and fixed to the mounting bracket by a plurality of first fasteners; The lower limit member is connected and fixed to the core by a plurality of second fasteners.

5. The core-pulling device according to claim 1, characterized in that, At least one support component is provided at each of the two transverse ends of the core, and each support component is respectively attached to the side wall of the shell to help limit the position of the core in the transverse direction.

6. The core-pulling device according to claim 5, characterized in that, Each of the aforementioned support components is located at the upper part of the rear end of the core; Each of the support components includes a roller and a support frame connecting the roller and the core; the roller and the support frame are rotatably connected, the roller is in contact with the side wall of the cylinder shell, and can rotate along the side wall of the cylinder shell.

7. The core-pulling device according to claim 6, characterized in that, The support frame includes a main body and at least two support rods on the side of the main body away from the core, and the main body is connected and fixed to the core; The support assembly further includes a connecting frame passing through at least two of the support rods, and the roller is rotatably connected to the connecting frame via a connecting shaft.

8. The core-pulling device according to claim 7, characterized in that, Each of the support components further includes an elastic element connected between the connecting frame and the main body, and the elastic element is located between at least two of the support rods; The elastic element is capable of stretching and contracting laterally.

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