A hydraulic pipe joint structure of a hot press and a hot press using the same

Abstract

The invention discloses a hydraulic pipe joint structure of a hot press, comprising a first connecting sleeve, a second connecting sleeve, a first spring damper, a second spring damper and a connecting rod; the top of the first spring damper is provided with a first movable end that can be pulled back and retracted; the second spring damper is provided with a second movable end that can be pulled back and retracted; the first movable end is used to be fixedly connected to the hydraulic lifting platform of the hot press; the first connecting sleeve can be hinged to the bottom of the first spring damper so as to swing up and down, and the first connecting sleeve is used to be sleeved on the outer wall of the hydraulic pipe; one end of the connecting rod can be hinged to the outer wall of the first spring damper so as to swing up and down, and the other end of the connecting rod is fixedly connected to the second movable end; the second connecting sleeve can be hinged to the outer wall of the second spring damper so as to swing up and down, and the second connecting sleeve is used to be sleeved on the outer wall of another hydraulic pipe. The structure can effectively reduce the movement of the hydraulic pipe, thereby reducing the metal fatigue of the hydraulic pipe and extending the replacement cycle.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic pipeline connection, and in particular to a hydraulic pipe joint structure of a hot press and a hot press using the same. Background Art

[0002] At present, some hot presses have a hydraulically driven lifting platform, which moves up and down above the hot press station to make the hot press surface press against and away from the workpiece. However, the problem is that the hot press needs to be lifted up and down every time a batch of workpieces are hot pressed, and the lifting frequency is high. However, the hydraulic pipe that provides hydraulic oil will move due to the rise and fall of the hydraulic lifting platform, resulting in frequent movement of the hydraulic pipe, which is prone to metal fatigue, and then leads to frequent replacement of the hydraulic pipe and high maintenance costs. Summary of the invention

[0003] The purpose of the present invention is to propose a hydraulic pipe joint structure of a hot press and a hot press using the same, so as to solve the technical problem that the hydraulic pipe moves frequently and is prone to metal fatigue, which leads to a high replacement frequency and high maintenance cost of the hydraulic pipe.

[0004] To achieve this object, the present invention adopts the following technical scheme: a hydraulic pipe joint structure of a hot press, comprising a first connecting sleeve, a second connecting sleeve, a first spring damper, a second spring damper and a connecting rod; the top of the first spring damper is provided with a first movable end that can be pulled back and retracted; the second spring damper is provided with a second movable end that can be pulled back and retracted; the first movable end is used to be fixedly connected to the hydraulic lifting platform of the hot press; the first connecting sleeve is hinged to the bottom of the first spring damper so as to swing up and down, and the first connecting sleeve is used to be sleeved on the outer wall of the hydraulic pipe; one end of the connecting rod is hinged to the outer wall of the first spring damper so as to swing up and down, and the other end of the connecting rod is fixedly connected to the second movable end; the second connecting sleeve is hinged to the outer wall of the second spring damper so as to swing up and down, and the second connecting sleeve is used to be sleeved on the outer wall of another hydraulic pipe.

[0005] As an optional embodiment, in the first aspect of the present invention, the first spring damper includes a shell, a first tension spring and a first pull rod; a first accommodating chamber is provided inside the shell, a first through hole connected to the first accommodating chamber is opened on the top surface of the shell, the first pull rod is gap-matched with the first through hole, the top end of the first pull rod is fixedly connected to the hydraulic lifting platform of the hot press, the bottom end of the first pull rod is connected to the top end of the first tension spring, and the bottom end of the first tension spring is connected to the bottom of the first accommodating chamber.

[0006] As an optional embodiment, in the first aspect of the present invention, the second spring damper includes a cylinder, a second tension spring and a second pull rod; a second accommodating chamber is provided inside the cylinder; a second through hole connected to the second accommodating chamber is opened at the end of the cylinder close to the connecting rod; the second pull rod is gap-fitted with the second through hole, the top end of the second pull rod is fixedly connected to the end of the connecting rod, the bottom end of the second pull rod is connected to the top end of the second tension spring, and the bottom end of the second tension spring is connected to the bottom of the second accommodating chamber.

[0007] As an optional embodiment, in the first aspect of the present invention, the first connecting sleeve and the second connecting sleeve each include a first half cylinder, a second half cylinder and a hoop, the first half cylinder and the second half cylinder are symmetrically arranged on the left and right to form a complete connecting sleeve, and the hoop is sleeved on the outer wall of the connecting sleeve.

[0008] As an optional embodiment, in the first aspect of the present invention, the outer wall of the first semi-cylinder is provided with a symmetrical connecting plate, and the connecting plate is provided with a mounting hole for the hinge shaft to pass through.

[0009] As an optional embodiment, in the first aspect of the present invention, the first spring damper also includes an articulated seat, which is rotatably mounted on a rod body of the first pull rod located outside the shell; the articulated seat is hinged to the end of the connecting rod.

[0010] As an optional embodiment, in the first aspect of the present invention, a connecting head is provided at the top of the first pull rod, the first connecting head is provided with an external thread relative to the first pull rod, a locking nut is provided between the connecting head and the hinge seat, and the locking nut is threadedly connected to the pull rod.

[0011] As an optional embodiment, in the first aspect of the present invention, a bottom cover is provided at the bottom of the shell, the bottom cover is detachably connected to the shell, and the first connecting sleeve is hinged to the bottom end surface of the bottom cover so as to be rotatable up and down.

[0012] The second aspect of the present invention discloses a hot press, comprising a hydraulic lifting platform that can be lifted up and down and a hydraulic pipe joint structure of a hot press disclosed in the first aspect of the present invention, wherein the hydraulic lifting platform is provided with a first hydraulic pipe and a second hydraulic pipe, the first movable end is fixedly connected to the hydraulic lifting platform, the first connecting sleeve is sleeved on the outer wall of the first hydraulic pipe, and the second connecting sleeve is sleeved on the outer wall of the second hydraulic pipe.

[0013] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0014] In a hydraulic pipe joint structure of a hot press provided by the present invention, the first movable end of the first spring damper is installed on a hydraulic lifting platform, the first connecting sleeve is sleeved on the outer wall of one hydraulic pipe, and the second connecting sleeve is sleeved on the outer wall of another hydraulic pipe. When the hydraulic lifting platform is raised, the first movable end of the first spring damper extends out to play a buffering role to reduce the movement of the first connecting sleeve, thereby reducing the movement of the hydraulic pipe connected to the first connecting sleeve. At the same time, when the first spring damper moves with the hydraulic lifting platform, the connecting rod pulls out the second movable end of the second spring damper to reduce the movement of the second connecting sleeve, playing a buffering role, thereby reducing the movement of the hydraulic pipe connected to the second connecting sleeve, thereby reducing the fatigue of the hydraulic pipe. When the hydraulic lifting platform is lowered, the first movable end of the first spring damper retracts due to the reset ability of the spring, plays a buffering role, reduces the movement of the first connecting sleeve, and then reduces the movement of the hydraulic pipe connected to the first connecting sleeve; at the same time, the second movable end of the second spring damper is retracted due to the weakening of the tension of the connecting rod, and plays a buffering role to reduce the movement of the second connecting sleeve, and then reduces the movement of the hydraulic pipe connected to the second connecting sleeve. In this way, even if the hydraulic lifting platform rises or falls, the movement of the hydraulic pipe can be reduced, thereby reducing the metal fatigue of the hydraulic pipe and extending the replacement cycle. Specifically, when the hot press uses the hydraulic pipe joint structure provided by the present invention, the hydraulic pipe of the hot press changes from being replaced once a month to once a year, greatly reducing the cost of production and maintenance. In addition, the connecting rod, the first connecting sleeve and the second connecting sleeve can all swing up and down to adjust the angle, effectively avoiding the bending of the hydraulic pipe when moving, and greatly reducing the damage of the hydraulic pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of one embodiment of the present invention;

[0016] Figure 2 is a schematic diagram of the working principle of one embodiment of the present invention;

[0017] In the accompanying drawings: 100-first connecting sleeve, 110-first half cylinder, 120-second half cylinder, 130-hoop, 140-connecting plate, 200-second connecting sleeve, 300-first spring damper, 310-first movable end, 320-shell, 321-first accommodating chamber, 322-bottom cover, 330-first tension spring, 340-first pull rod, 350-connecting head, 360-locking nut, 370-hinge seat, 400-second spring damper, 410-second movable end, 420-cylinder, 421-second accommodating chamber, 430-second tension spring, 440-second pull rod, 500-connecting rod, 600-hydraulic lifting platform, 610-first hydraulic pipe, 620-second hydraulic pipe. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish the described features, without distinction of order or importance.

[0020] Combine the following Figure 1 to Figure 2 , describes a hydraulic pipe joint structure of a hot press according to an embodiment of the present invention, comprising a first connecting sleeve 100, a second connecting sleeve 200, a first spring damper 300, a second spring damper 400 and a connecting rod 500; the top of the first spring damper 300 is provided with a first movable end 310 that can be pulled back and retracted; the second spring damper 400 is provided with a second movable end 410 that can be pulled back and retracted; the first movable end 310 is used to be fixedly connected to a hydraulic lifting platform 600 of the hot press; the first connecting sleeve 100 can be hinged to the bottom of the first spring damper 300 so as to swing up and down, and the first connecting sleeve 100 is used to be sleeved on the outer wall of the hydraulic pipe; one end of the connecting rod 500 can be hinged to the outer wall of the first spring damper 300 so as to swing up and down, and the other end of the connecting rod 500 is fixedly connected to the second movable end 410; the second connecting sleeve 200 can be hinged to the outer wall of the second spring damper 400 so as to swing up and down, and the second connecting sleeve 200 is used to be sleeved on the outer wall of another hydraulic pipe.

[0021] In a hydraulic pipe joint structure of a hot press provided by the present invention, the first movable end 310 of the first spring damper 300 is installed on the hydraulic lifting platform 600, the first connecting sleeve 100 is sleeved on the outer wall of one hydraulic pipe, and the second connecting sleeve is sleeved on the outer wall of another hydraulic pipe. When the hydraulic lifting platform 600 is raised, the first movable end 310 of the first spring damper 300 extends out to play a buffering role to reduce the movement of the first connecting sleeve 100, thereby reducing the movement of the hydraulic pipe connected to the first connecting sleeve 100. At the same time, when the first spring damper 300 moves with the hydraulic lifting platform 600, the connecting rod 500 pulls out the second movable end 410 of the second spring damper 400 to reduce the movement of the second connecting sleeve 200, play a buffering role, thereby reducing the movement of the hydraulic pipe connected to the second connecting sleeve 200, thereby reducing the fatigue of the hydraulic pipe. When the hydraulic lifting platform 600 is lowered, the first movable end 310 of the first spring damper 300 retracts due to the reset ability of the spring, plays a buffering role, reduces the movement of the first connecting sleeve 100, and further reduces the movement of the hydraulic pipe connected to the first connecting sleeve 100; at the same time, the second movable end 410 of the second spring damper 400 is retracted due to the reset ability of the spring due to the weakening of the tension of the connecting rod 500, plays a buffering role, reduces the movement of the second connecting sleeve 200, and further reduces the movement of the hydraulic pipe connected to the second connecting sleeve 200. In this way, even if the hydraulic lifting platform 600 rises or falls, the movement of the hydraulic pipe can be reduced, thereby reducing the metal fatigue of the hydraulic pipe and extending the replacement cycle. Specifically, when the hot press uses the hydraulic pipe joint structure provided by the present invention, the hydraulic pipe of the hot press is replaced once a year instead of once a month, which greatly reduces the cost of production and maintenance. In addition, the connecting rod 500, the first connecting sleeve 100 and the second connecting sleeve 200 can all swing up and down to adjust the angle, effectively preventing the hydraulic pipe from bending during movement and greatly reducing damage to the hydraulic pipe.

[0022] As a preferred embodiment, the first spring damper 300 includes a shell 320, a first tension spring 330 and a first pull rod 340; a first accommodating chamber 321 is provided inside the shell 320, a first through hole connected to the first accommodating chamber 321 is opened on the top surface of the shell 320, the first pull rod 340 is gap-matched with the first through hole, the top end of the first pull rod 340 is fixedly connected to the hydraulic lifting platform 600 of the hot press, the bottom end of the first pull rod 340 is connected to the top end of the first tension spring 330, and the bottom end of the first tension spring 330 is connected to the bottom of the first accommodating chamber 321.

[0023] Specifically, refer to Figure 1 and Figure 2As shown, the top end of the first pull rod 340 is the first movable end 310. When the top end of the first pull rod 340 follows the hydraulic lifting platform 600 to rise, the first pull rod 340 is pulled upward relative to the housing 320, and the first pull rod 340 applies tension to the first tension spring 330, so that the length of the first tension spring 330 becomes longer. The first tension spring 330 plays a buffering role, reducing the movement of the housing 320, thereby reducing the movement of the first connecting sleeve 100. When the top end of the first pull rod 340 follows the hydraulic lifting platform 600 to descend, the first pull rod 340 is inserted downward relative to the housing 320, and the length of the first tension spring 330 in the stretched state becomes shorter, which also plays a buffering role, reducing the movement of the housing 320, thereby reducing the movement of the first connecting sleeve 100. In this way, even if the hydraulic lifting platform 600 rises or falls, the movement of the first connecting sleeve can be reduced, thereby reducing the movement of the hydraulic pipe connected to the first connecting sleeve, effectively reducing the metal fatigue of the hydraulic pipe, extending the replacement cycle of the hydraulic pipe, and greatly reducing the cost of production and maintenance.

[0024] As a preferred embodiment, the second spring damper 400 includes a cylinder 420, a second tension spring 430 and a second pull rod 440; a second accommodating chamber 421 is provided inside the cylinder 420; a second through hole connected to the second accommodating chamber 421 is opened at one end of the cylinder 420 close to the connecting rod 500; the second pull rod 440 is clearance-matched with the second through hole, the top end of the second pull rod 440 is fixedly connected to the end of the connecting rod 500, the bottom end of the second pull rod 440 is connected to the top end of the second tension spring 430, and the bottom end of the second tension spring 430 is connected to the bottom of the second accommodating chamber 421.

[0025] Specifically, Figure 2 As shown, one end of the second pull rod 440 connected to the connecting rod 500 is the second movable end 410. When the second pull rod 440 follows the pull rod to rise, the second pull rod 440 is pulled out relative to the cylinder 420, and the second pull rod 440 applies tension to the second tension spring 430, so that the length of the second tension spring 430 becomes longer, and the second tension spring 430 plays a buffering role, reducing the movement of the cylinder 420, thereby reducing the movement of the second connecting sleeve 200. When the top end of the second pull rod 440 follows the connecting rod 500 to fall, the second pull rod 440 is inserted into the cylinder 420, and the length of the second tension spring 430 in the stretched state becomes shorter, which also plays a buffering role, reducing the movement of the cylinder 420, thereby reducing the movement of the second connecting sleeve 200. In this way, even if the hydraulic lifting platform 600 rises or falls, the movement of the second connecting sleeve can be reduced, thereby reducing the movement of the hydraulic pipe connected to the second connecting sleeve, effectively reducing the metal fatigue of the hydraulic pipe, extending the replacement cycle of the hydraulic pipe, and greatly reducing the cost of production and maintenance.

[0026] As a preferred embodiment, the first connecting sleeve 100 and the second connecting sleeve 200 both include a first semi-cylinder 110, a second semi-cylinder 120 and a hoop 130. The first semi-cylinder 110 and the second semi-cylinder 120 are bilaterally symmetrical to form a complete connecting sleeve, and the hoop 130 is sleeved on the outer wall of the connecting sleeve. Specifically, the hydraulic pipe is wrapped by the first semi-cylinder 110 and the second semi-cylinder 120, and then the first semi-cylinder 110 and the second semi-cylinder 120 are sleeved by the hoop 130, so that the first semi-cylinder 110 and the second semi-cylinder 120 are fixedly matched to form a complete first connecting sleeve 100 or a second connecting sleeve 200, which has a simple structure, is easy to assemble, and can adjust the connection position with the hydraulic pipe according to actual needs, and is flexible to use.

[0027] As a preferred embodiment, the outer wall of the first semi-cylinder 110 is provided with a symmetrical connecting plate 140, and the connecting plate 140 is provided with a mounting hole for the hinge shaft to pass through. Figure 2 As shown, the connecting plate 140 is arranged on the outer wall of the first cylinder 420 by welding, and can be assembled and adjusted according to actual conditions, and has a simple structure.

[0028] As a preferred embodiment, the first spring damper 300 further includes an articulated seat 370, which is rotatably sleeved on the rod body of the first pull rod 340 located outside the housing 320; the articulated seat 370 is hinged to the end of the connecting rod 500. Specifically, by rotatably sleeved on the rod body of the first pull rod 340, the connection can be rotated up and down and horizontally, and then the second connecting sleeve 200 can be horizontally rotated relative to the first connecting sleeve 100, thereby increasing the degree of freedom of the second connecting sleeve 200, and then facilitating the connection between the second connecting sleeve 200 and the hydraulic pipe.

[0029] As a preferred embodiment, a connector 350 is provided at the top of the first pull rod 340, and the first connector 350 is provided with an external thread relative to the first pull rod 340. A locking nut 360 is provided between the connector 350 and the hinge seat 370, and the locking nut 360 is threadedly connected to the pull rod. Figure 2 As shown, when the first pull rod 340 is connected to the hydraulic lifting platform 600, the connecting head 350 is embedded in the bottom of the hydraulic lifting platform 600, and then the locking nut 360 is rotated to make the locking nut 360 press upward against the bottom surface of the hydraulic lifting platform 600, and pull the connecting head 350 downward against the bottom of the hydraulic lifting platform 600, so as to clamp the hydraulic lifting platform 600, thereby achieving a fixed connection between the first movable end 310 and the hydraulic lifting platform 600.

[0030] As a preferred embodiment, a bottom cover 322 is provided at the bottom of the housing 320, and the bottom cover 322 is detachably connected to the housing 320, and the first connecting sleeve 100 is hingedly connected to the bottom end surface of the bottom cover 322 so as to be rotatable up and down. Figure 2 As shown, the bottom cover 322 is detachably connected to the housing 320 by screws, and the first accommodating cavity 321 is opened by setting the bottom cover 322 to facilitate replacement and assembly of the first tension spring 330 .

[0031] The utility model also discloses a hot press, comprising a hydraulic lifting platform 600 that can be lifted up and down and a hydraulic pipe joint structure of the hot press, wherein the hydraulic lifting platform 600 is provided with a first hydraulic pipe 610 and a second hydraulic pipe 620, the first movable end 310 is fixedly connected to the hydraulic lifting platform 600, the first connecting sleeve 100 is sleeved on the outer wall of the first hydraulic pipe 610, and the second connecting sleeve is sleeved on the outer wall of the second hydraulic pipe 620. In the hydraulic pipe joint structure of the hot press provided by the present invention, the first movable end 310 of the first spring damper 300 is installed on the hydraulic lifting platform 600, the first connecting sleeve 100 is sleeved on the outer wall of one hydraulic pipe, and the second connecting sleeve is sleeved on the outer wall of another hydraulic pipe. When the hydraulic lifting platform 600 is raised, the first movable end 310 of the first spring damper 300 extends out to play a buffering role, so as to reduce the movement of the first connecting sleeve 100, thereby reducing the movement of the first hydraulic pipe 610. At the same time, when the first spring damper 300 moves with the hydraulic lifting platform 600, the connecting rod 500 pulls out the second movable end 410 of the second spring damper 400 to reduce the movement of the second connecting sleeve 200, play a buffering role, and then reduce the movement of the second hydraulic pipe 620, thereby reducing the fatigue of the hydraulic pipe. When the hydraulic lifting platform 600 is lowered, the first movable end 310 of the first spring damper 300 retracts due to the reset ability of the spring, plays a buffering role, reduces the movement of the first connecting sleeve 100, and then reduces the movement of the first hydraulic pipe 610; at the same time, the second movable end 410 of the second spring damper 400 retracts due to the reset ability of the spring due to the weakening of the pulling force of the connecting rod 500, plays a buffering role, reduces the movement of the second connecting sleeve 200, and then reduces the movement of the second hydraulic pipe 620. In this way, even if the hydraulic lifting platform 600 rises or falls, the movement of the first hydraulic pipe 610 and the second hydraulic pipe 620 can be reduced, thereby reducing the metal fatigue of the hydraulic pipe and extending the replacement cycle. Specifically, when the hot press uses the hydraulic pipe joint structure provided by the present invention, the hydraulic pipe of the hot press is replaced once a year instead of once a month, which greatly reduces the cost of production and maintenance. In addition, the connecting rod 500, the first connecting sleeve 100 and the second connecting sleeve 200 can adjust the angle by swinging up and down, effectively avoiding the bending of the hydraulic pipe when moving, and greatly reducing the damage of the hydraulic pipe.

[0032] The hydraulic pipe joint structure of the hot press according to the embodiment of the present invention and other structures and operations of the hot press using the same are well known to those skilled in the art and will not be described in detail here.

[0033] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A hydraulic pipe joint structure for a hot press, characterized in that: It includes a first connecting sleeve, a second connecting sleeve, a first spring damper, a second spring damper and a connecting rod; The top of the first spring damper is provided with a first movable end that can be pulled back and retracted; the second spring damper is provided with a second movable end that can be pulled back and retracted; The first movable end is used to be fixedly connected to the hydraulic lifting platform of the hot press; the first connecting sleeve is hinged to the bottom of the first spring damper so as to be able to swing up and down, and the first connecting sleeve is used to be sleeved on the outer wall of the hydraulic pipe; One end of the connecting rod is hinged to the outer wall of the first spring damper so as to be able to swing up and down, and the other end of the connecting rod is fixedly connected to the second movable end; The second connecting sleeve is hinged to the outer wall of the second spring damper in a manner that it can swing up and down, and the second connecting sleeve is used to be sleeved on the outer wall of another hydraulic pipe.

2. The hydraulic pipe joint structure of a hot press according to claim 1, characterized in that: The first spring damper includes a shell, a first tension spring and a first pull rod; a first accommodating cavity is provided inside the shell, a first through hole connected to the first accommodating cavity is opened on the top surface of the shell, the first pull rod is gap-matched with the first through hole, the top end of the first pull rod is fixedly connected to the hydraulic lifting platform of the hot press, the bottom end of the first pull rod is connected to the top end of the first tension spring, and the bottom end of the first tension spring is connected to the bottom of the first accommodating cavity.

3. The hydraulic pipe joint structure of a hot press according to claim 1, characterized in that: The second spring damper includes a cylinder, a second tension spring and a second pull rod; a second accommodating chamber is provided inside the cylinder; a second through hole connected to the second accommodating chamber is opened at one end of the cylinder close to the connecting rod; the second pull rod is gap-fitted with the second through hole, the top end of the second pull rod is fixedly connected to the end of the connecting rod, the bottom end of the second pull rod is connected to the top end of the second tension spring, and the bottom end of the second tension spring is connected to the bottom of the second accommodating chamber.

4. The hydraulic pipe joint structure of a hot press according to claim 1, characterized in that: The first connecting sleeve and the second connecting sleeve both include a first half cylinder, a second half cylinder and a hoop. The first half cylinder and the second half cylinder are bilaterally symmetrical to form a complete connecting sleeve. The hoop is sleeved on the outer wall of the connecting sleeve.

5. The hydraulic pipe joint structure of a hot press according to claim 4, characterized in that: The outer wall of the first semi-cylinder is provided with a symmetrical connecting plate, and the connecting plate is provided with a mounting hole for the hinge shaft to pass through.

6. The hydraulic pipe joint structure of a hot press according to claim 2, characterized in that: The first spring damper also includes an articulated seat, which is rotatably sleeved on a rod body of the first pull rod located outside the housing; the articulated seat is hinged to the end of the connecting rod.

7. The hydraulic pipe joint structure of a hot press according to claim 6, characterized in that: A connecting head is provided at the top of the first pull rod, and the connecting head is provided with an external thread relative to the first pull rod. A locking nut is provided between the connecting head and the hinge seat, and the locking nut is threadedly connected to the pull rod.

8. The hydraulic pipe joint structure of a hot press according to claim 1, characterized in that: A bottom cover is provided at the bottom of the shell, the bottom cover is detachably connected to the shell, and the first connecting sleeve is hinged on the bottom end surface of the bottom cover so as to be rotatable up and down.

9. A hot press, characterized in that: It comprises a hydraulic lifting platform which can be lifted up and down and a hydraulic pipe joint structure of a hot press as described in any one of claims 1 to 8, wherein the hydraulic lifting platform is provided with a first hydraulic pipe and a second hydraulic pipe, the first movable end is fixedly connected to the hydraulic lifting platform, the first connecting sleeve is sleeved on the outer wall of the first hydraulic pipe, and the second connecting sleeve is sleeved on the outer wall of the second hydraulic pipe.

Images