Hydraulic machine with protection structure

Abstract

The invention discloses a hydraulic machine with a protection structure, and relates to the technical field of hydraulic machines, the hydraulic machine with the protection structure comprises a hydraulic machine body, a supporting rod is fixed in the middle of the hydraulic machine body, a hydraulic cylinder is fixed on the upper portion of the hydraulic machine body, and a hydraulic head is detachably installed at the bottom of the hydraulic cylinder; four sets of vertical rods are fixed to the upper surface of the lower portion of the hydraulic machine body, a protective door is hinged to the side wall of the vertical rod on the left side, the supporting rod penetrates through the reinforcing rod, the penetrating positions are fixedly connected, the reinforcing rod is in a semi-surrounding shape, and the hydraulic machine body is provided with a protective mechanism which can conveniently limit the hydraulic head and prevent splashing during working. According to the hydraulic machine with the protection structure, when the protection door is opened, through cooperation of the gear set, the threaded groove rod and the protruding rod, the sliding rod is driven to move downwards, the baffle is pushed to move to the bottom of the hydraulic head through the hinge structure, the hydraulic head is supported through the baffle, the stability of the hydraulic head is improved, and falling is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic presses, in particular to a hydraulic press with a protective structure. Background Art

[0002] As an important equipment that uses liquid pressure transmission to achieve various forming processes, hydraulic presses are widely used in many fields such as machinery manufacturing, automobile industry, aerospace, etc.

[0003] The utility model patent for a hydraulic press with a protective structure, with patent announcement number CN219096000U, involves a hydraulic press with a protective structure, including a hydraulic press body, a protective cover and a grating ruler protector are arranged on the hydraulic press body, a connecting block is arranged inside the hydraulic press body, and movable grooves are opened on the top and bottom sides of the connecting block, and movable rods are slidably installed in the two movable grooves. In this application, by setting the connecting block and the support plate, an additional protective support structure is formed inside the hydraulic press body by using the connecting block and the support plate to cooperate with each other, which can provide a certain supporting force when the movable parts inside the hydraulic press body fall, so as to slow down or prevent the movable parts from further moving and injuring the maintenance personnel. At the same time, when the pressure sensors on the support plate and the connecting block sense abnormal changes in pressure, the alarm is triggered to sound an alarm, reminding the maintenance personnel to evacuate quickly, and the safety and reliability of the hydraulic press are improved by using the protective structure.

[0004] In existing hydraulic presses, the hydraulic heads are generally detachable. However, the protective mechanism of the above-mentioned equipment requires the staff to install additional protective support structures when not working in order to provide support for the moving parts inside the hydraulic press body. It cannot achieve the effect of emergency protection, cannot automatically support or release the limit according to the working status, and it is troublesome to repeatedly load and unload the support structure, which is inconvenient for the staff to use the hydraulic press immediately for work. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a hydraulic press with a protective structure, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hydraulic press with a protective structure includes a hydraulic press body, a support rod is fixed in the middle of the hydraulic press body, a hydraulic cylinder is fixed on the upper part of the hydraulic press body, a hydraulic head is detachably mounted on the bottom of the hydraulic cylinder, a vertical pole is fixed on the upper surface of the lower part of the hydraulic press body, four groups of vertical poles are provided, a protective door is hinged on the side wall of the left vertical pole, the support rod passes through the reinforcing rod, and the penetration is fixedly connected, the reinforcing rod is in a semi-enclosed shape, the hydraulic press body is provided with a protective mechanism for conveniently limiting the hydraulic head and splashing during operation, the protective mechanism is provided with an auxiliary mechanism for convenient power off, and the protective mechanism is provided with an alarm device for detecting whether the protective door is closed;

[0007] Among them, the protective mechanism includes a gear set, a threaded groove rod, a sliding rod, a convex rod, a hinge structure, a baffle, a first spring, a push rod and a limit rod. The gear set includes a first gear and a second gear. The first gear is fixedly connected to the upper surface of the protective door. When the protective door rotates, it drives the first gear to rotate. The second gear is rotatably connected to the upper surface of the left vertical pole. The first gear and the second gear are meshed, and the rotation of the first gear drives the rotation of the second gear.

[0008] According to the above technical solution, a threaded groove rod passes through the vertical rod on the left side, and the penetration point is rotatably connected. A threaded groove is provided on the outer wall of the threaded groove rod, and the threaded groove rod is fixedly connected to the bottom surface of the second gear. When the second gear rotates, the threaded groove rod is driven to rotate. When the threaded groove rod rotates, the threaded groove rotates together. The vertical rod on the left side passes through a sliding rod, and the penetration point is slidably connected. The sliding rod is semi-enclosed, and a convex rod is fixed on the inner wall of the sliding rod. When the thread groove rotates, the convex rod slides up and down along the thread groove. The convex rod passes through the vertical rod on the left side, and the penetration point is slidably connected.

[0009] According to the above technical solution, the outer wall of the convex rod is fitted with the threaded groove, and one end of the convex rod away from the sliding rod is slidably connected to the inner wall of the threaded groove. The sliding rod is provided with a hinge structure, and the hinge structure includes a first hinge plate, a second hinge plate and a hinge rod. The first hinge plate is hinged to the bottom surface of the sliding rod, and when the sliding rod slides, it drives the first hinge plate to move and rotate at the same time.

[0010] According to the above technical solution, the second hinge rod is hinged on the upper surface of the lower part of the hydraulic press body, and the end of the first hinge plate away from the sliding rod is hinged to the end of the second hinge rod away from the lower part of the hydraulic press body. When the first hinge plate rotates, it drives the second hinge plate to rotate and move at the same time. The hinge of the first hinge plate and the second hinge plate is hinged with a hinge rod at the same time. When the first hinge plate and the second hinge plate move, it drives the hinge rod to move. A sliding groove is provided on one side wall of the hinge rod away from the hinge. The sliding groove and the side wall of the baffle are slidably connected. A guide strip is fixed to the side wall of the baffle. The inner wall of the sliding groove and the outer wall of the guide strip are in contact with each other. When the hinge rod moves, it drives the baffle to slide.

[0011] According to the above technical solution, the outer walls of the three sides of the reinforcing rod are provided with grooves, the upper surface of the inner wall of the groove is fixedly connected to the upper end of the first spring, a push rod is fixed to the bottom end of the first spring, the sliding rod can push the push rod to slide upward, the side wall of the push rod is slidably connected to the inner wall of the groove, the side wall in the groove passes through the limit rod, and the penetration is slidably connected, the upper end of the limit rod is slidably connected to the inclined surface of the push rod, when the push rod slides upward, it drives the limit rod to slide to release the limit, and when the push rod slides downward, it drives the limit rod to slide to limit the hydraulic head.

[0012] According to the above technical solution, the auxiliary mechanism includes a fixed rod, a card block, a limit groove, a movable block, a limit frame, a power-off switch and a power-off switch. The fixed rod passes through the card block and is rotatably connected at the penetration point. A limit groove is provided on the upper surface of the protective door. The card block can be buckled into the limit groove after rotation to limit the protective door. A movable block is hinged on the outer wall of the card block. A protrusion is fixed on the bottom surface of the movable block. The protrusion passes through the right vertical pole and is fitted at the penetration point. When the protrusion moves, the second spring is compressed.

[0013] According to the above technical solution, a limit frame is fixed on the upper surface of the movable block, and when the movable block moves, the limit frame is driven to move together. A power-off switch is fixed on the front of the right end of the reinforcing rod, and a power-off switch is arranged on the inner wall of the power-off switch. The power-off switch passes through the limit frame and is slidably connected at the penetration point. When the limit frame moves, the power-off switch is driven to move up and down to control the power-off switch.

[0014] According to the above technical solution, the alarm device includes a second spring, an alarm, a pressure sensor and a push switch. One end of the second spring is fixedly connected to the inner wall of the right vertical pole, and the other end of the second spring is fitted with the side wall of the protrusion fixedly connected to the bottom surface of the movable block. The side wall of the right end of the reinforcing rod is fixed with an alarm, and the side wall of the alarm is fixed with a pressure sensor. The pressure sensor detects the pressure to control the alarm to stop the alarm. The end of the pressure sensor away from the alarm passes through the second spring, and the penetration point is fitted. The pressure sensor detects the pressure of the second spring. A push switch is fixed on the bottom surface of the alarm. When the sliding rod slides to the top, the push switch is pressed to start the alarm.

[0015] The present invention provides a hydraulic press with a protective structure. It has the following beneficial effects:

[0016] 1. In the present invention, when the protective door is opened, the gear set, the threaded groove rod and the convex rod cooperate to drive the sliding rod to move downward, and the baffle is pushed to move to the bottom of the hydraulic head through the hinge structure, and the hydraulic head is supported by the baffle, so as to improve the stability of the hydraulic head and prevent it from falling. When the protective door is closed, the gear set on the protective door drives the threaded groove rod to rotate, cooperates with the convex rod to slide on the sliding rod, and pushes the baffle to move outward through the hinge structure, so as to form protection on the three sides of the hydraulic press and cooperate with the complete closure of the protective door to fully protect the whole, and avoid splashing during hydraulic pressure; the sliding of the sliding rod pushes the push rod to drive the limit rod to slide, so that the limit rod extends into the groove of the side wall of the hydraulic head, and the hydraulic head is limited, so as to avoid accidents such as the hydraulic head falling when the staff performs maintenance work, causing accidents.

[0017] 2. The present invention can push the movable block to move by the sliding rod when closing the protective door, driving the card block to rotate and buckle into the limit groove. During the closing period of the protective door, the sliding rod is always at the highest point, so that the movable block cannot be pushed by the second spring, resulting in the release of the limit of the protective door, so that the protective door can be limited more effectively, avoiding the protective door not being closed firmly and failing to provide complete protection when the hydraulic press body is working; the movement of the movable block drives the limit frame to move, and only after the protective door is completely closed can the movable block push the power-off switch to control the power-off gate to energize the hydraulic press body, and when the protective door is not completely closed, the power-off gate will power off the hydraulic press body, avoiding accidents caused by accidental contact or start-up of the hydraulic press body by staff during maintenance.

[0018] 3. The alarm device in the present invention starts the alarm by sliding the sliding rod upward, so that the alarm starts to sound, and the pressure value of the second spring is detected by the pressure sensor until the detection reaches the highest threshold value and the alarm stops. The state of the protective door can be monitored by the state of the alarm to warn the staff, so as to prevent the staff from starting the hydraulic press body when the door is not closed, which may damage the protective components and easily cause accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure of area A;

[0021] Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure of area B;

[0022] Figure 4 It is a partial cross-sectional structural schematic diagram of the present invention;

[0023] Figure 5 It is a schematic diagram of the local structure of the reinforcing rod of the present invention;

[0024] Figure 6 It is a schematic diagram of the side structure of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the alarm device of the present invention.

[0026] In the figure: 1. hydraulic press body; 2. support rod; 3. hydraulic head; 4. vertical rod; 5. protective door; 6. reinforcing rod; 7. protective mechanism; 71. gear set; 72. threaded groove rod; 73. sliding rod; 74. convex rod; 75. hinge structure; 76. baffle; 77. first spring; 78. push rod; 79. limit rod; 8. auxiliary mechanism; 81. fixed rod; 82. block; 83. limit groove; 84. movable block; 85. limit frame; 86. power-off switch; 87. power-off switch; 9. alarm device; 91. second spring; 92. alarm; 93. pressure sensor; 94. push switch. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 7 An embodiment of the present invention is as follows: a hydraulic press with a protective structure includes a hydraulic press body 1, a support rod 2 is fixed in the middle of the hydraulic press body 1, a hydraulic cylinder is fixed on the upper part of the hydraulic press body 1, a hydraulic head 3 is detachably mounted on the bottom of the hydraulic cylinder, a vertical rod 4 is fixed on the upper surface of the lower part of the hydraulic press body 1, four groups of vertical rods 4 are arranged, a protective door 5 is hinged on the side wall of the left vertical rod 4, the support rod 2 passes through the reinforcing rod 6, and the penetration is fixedly connected, the reinforcing rod 6 is in a semi-enclosed shape, and the hydraulic press body 1 is provided with a protective mechanism 7 for facilitating the limiting of the hydraulic head 3 and splash prevention during operation.

[0029] Among them, the protective mechanism 7 includes a gear set 71, a threaded groove rod 72, a sliding rod 73, a protruding rod 74, a hinge structure 75, a baffle 76, a first spring 77, a push rod 78 and a limit rod 79. The gear set 71 includes a first gear and a second gear. The first gear is fixedly connected to the upper surface of the protective door 5. When the protective door 5 is closed, the protective door 5 rotates around the hinge, and the protective door 5 drives the first gear in the gear set 71 to rotate. The second gear is rotatably connected to the upper surface of the left vertical rod 4. The first gear and the second gear are meshed. The rotation of the first gear drives the rotation of the second gear. The left vertical rod 4 is penetrated by a threaded groove rod 72, and the penetration is rotatably connected. The outer wall of the threaded groove rod 72 is provided with a threaded groove. The threaded groove rod 72 is fixedly connected to the bottom surface of the second gear. When rotating, the threaded groove rod 72 on its bottom surface rotates with the second gear. When the threaded groove rod 72 rotates, the threaded groove on its outer wall also rotates counterclockwise. The left side vertical rod 4 passes through the sliding rod 73 and is slidably connected at the penetration. The sliding rod 73 is semi-enclosed. A convex rod 74 is fixed to the inner wall of the sliding rod 73. The convex rod 74 passes through the left side vertical rod 4 and is slidably connected at the penetration. The outer wall of the convex rod 74 fits the threaded groove, and the end of the convex rod 74 away from the sliding rod 73 is slidably connected to the inner wall of the threaded groove. When the threaded groove rod 72 rotates, the convex block moves up and down, and the up and down movement of the convex block drives the sliding rod 73 to slide up and down. The sliding rod 73 is provided with a hinge structure 75, which includes a first hinge plate, a second hinge plate and a hinge rod. The first hinge plate is hinged on the sliding rod The bottom surface of the rod 73, while the sliding rod 73 slides upward, drives the first hinge plate in the hinge structure 75 to move upward with one end hinged thereto. While one end of the first hinge plate moves upward, it also rotates. The second hinge rod is hinged to the upper surface of the lower part of the hydraulic press body 1. The end of the first hinge plate away from the sliding rod 73 and the end of the second hinge rod away from the lower part of the hydraulic press body 1 are hinged. The rotation of the first hinge plate drives the end of the second hinge plate to rotate with it. The rotation of the first hinge plate and the second hinge plate drives the hinge rod to move in a direction away from the center while moving up and down. The hinge of the first hinge plate and the second hinge plate is hinged with a hinge rod at the same time. The rotation of the first hinge plate and the second hinge plate drives the hinge rod to move, and drives the baffle 76 to move. When the slider 73 slides in the direction away from the center, a sliding groove is provided on one side wall of the hinged rod away from the hinge, and the sliding groove is slidably connected to the side wall of the baffle plate 76. A guide strip is fixed to the side wall of the baffle plate 76, and the inner wall of the sliding groove fits the outer wall of the guide strip. When the baffle plate 76 slides in the direction away from the center, a protective structure is formed around the hydraulic press body 1, and the hydraulic press body 1 is shielded on all sides when the hydraulic press body 1 is working. When the baffle plate 76 slides in the direction of the center, the hydraulic head 3 is supported at the bottom. The outer walls of the three sides of the reinforcing rod 6 are provided with grooves, and the upper surface of the inner wall of the groove is fixedly connected to the upper end of the first spring 77. A push rod 78 is fixed to the bottom end of the first spring 77. When the sliding rod 73 slides upward to contact the push rod 78, the push rod 78 is pushed to slide upward. When the sliding rod 73 slides downward,The push rod 78 slides downward under the thrust of the first spring 77, and the side wall of the push rod 78 is slidably connected to the inner wall of the groove. The side wall in the groove passes through the limit rod 79, and the penetration is slidably connected. The upper end of the limit rod 79 is slidably connected to the inclined surface of the push rod 78. When the push rod 78 slides downward, it drives the limit rod 79 to slide left and right and extend outward to limit the hydraulic head 3. When the push rod 78 slides upward, it drives the limit rod 79 to slide left and right and retract to release the limit. When the protective door 5 is opened, the protective mechanism 7 drives the gear The group 71 cooperates with the threaded groove rod 72, the sliding rod 73 and the protruding rod 74 to drive the hinge structure 75 to move the baffle 76 to avoid splashing during hydraulic pressure, and at the same time support the hydraulic head 3 when not working; the sliding rod 73 pushes the push rod 78 to drive the limit rod 79 to slide and release the limit of the hydraulic head 3, and cooperates with the first spring 77 to drive the limit rod 79 to slide and limit the hydraulic head 3, so as to avoid accidents such as the limit of the hydraulic head 3 being released when the staff is performing maintenance work, causing accidents.

[0030] When the present embodiment is working, when the protective door 5 is closed, the protective door 5 rotates clockwise around the hinge, and the protective door 5 drives the first gear in the gear set 71 to rotate clockwise, and the clockwise rotation of the first gear drives the second gear to rotate counterclockwise. When the second gear rotates counterclockwise, the threaded groove rod 72 on its bottom surface rotates together with the second gear, and when the threaded groove rod 72 rotates counterclockwise, the threaded groove on its outer wall also rotates counterclockwise, and the protrusion on the inner wall of the sliding rod 73 slides along the threaded groove. At the same time, the protrusion is in a sliding connection with the left side upright rod 4, so when the threaded groove rod 72 rotates, the protrusion moves upward, and the upward movement of the protrusion drives the sliding rod 73 to slide upward. When the sliding rod 73 slides upward to contact the push rod 78 , pushing the push rod 78 to slide upward. When the push rod 78 slides upward, the first spring 77 is compressed, and at the same time, the limiting rod 79 is driven to slide. The limiting rod 79 slides along the hypotenuse of the push rod 78, approaches each other, and retracts into the reinforcing rod 6, and no longer limits the hydraulic head 3. When the sliding rod 73 slides upward, it drives the first hinge plate in the hinge structure 75 to move upward. When one end of the first hinge plate moves upward, it also rotates, driving the second hinge plate to rotate. The rotation of the first hinge plate and the second hinge plate drives the hinge rod to move away from the center while moving up and down, driving the baffle 76 to slide in a direction away from the center. 1 forms a protective structure around the periphery. When the protective door 5 is opened after use, the protective door 5 rotates counterclockwise around the hinge, and the protective door 5 drives the first gear in the gear set 71 to rotate counterclockwise. The counterclockwise rotation of the first gear drives the second gear to rotate clockwise. When the second gear rotates clockwise, the threaded groove rod 72 on its bottom surface rotates together with the second gear. When the threaded groove rod 72 rotates clockwise, the threaded groove on its outer wall also rotates clockwise, and the protrusion on the inner wall of the sliding rod 73 slides along the threaded groove. At the same time, the protrusion is in a sliding connection with the left side upright rod 4. Therefore, when the threaded groove rod 72 rotates, the protrusion moves downward, and the downward movement of the protrusion drives the sliding rod 73 to slide downward, and the sliding rod 73 slides downward. When moving, the push rod 78 slides downward by the thrust of the first spring 77, and at the same time drives the limit rod 79 to slide. The limit rod 79 slides along the oblique side of the push rod 78, moves away from each other, extends the reinforcing rod 6, penetrates the hydraulic head 3, and limits the hydraulic head 3. While the sliding rod 73 slides downward, it drives the first hinged plate in the hinge structure 75 to move downward at one end thereof, and while one end of the first hinged plate moves downward, it also rotates, driving the second hinged plate to rotate at one end thereof, and the rotation of the first hinged plate and the second hinged plate drives the hinged rod to move toward the center while moving up and down, driving the baffle 76 to slide toward the center, and further supporting the hydraulic head 3.

[0031] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, the protection mechanism 7 is provided with an auxiliary mechanism 8 for convenient power off, and the protection mechanism 7 is provided with an alarm device 9 for detecting whether the protection door 5 is closed.

[0032] The auxiliary mechanism 8 includes a fixed rod 81, a block 82, a limit groove 83, a movable block 84, a limit frame 85, a power-off switch 86 and a power-off switch 87. The fixed rod 81 passes through the block 82 and is rotatably connected at the penetration. The upper surface of the protective door 5 is provided with a limit groove 83. After the protective door 5 is closed, the block 82 rotates to a horizontal direction and slides into the limit groove 83 to lock the protective door 5. The outer wall of the block 82 is hinged with a movable block 84. When the sliding rod 73 slides upward, the movable block 84 is pushed. The movable block 84 moves upward, and when the movable block 84 moves upward, it drives the clamping block 82 to rotate counterclockwise around the fixed rod 81. When the clamping block 82 rotates, it pushes the movable block 84 to slide in the direction away from the clamping block 82. A protrusion is fixed on the bottom surface of the movable block 84, and the protrusion passes through the right side vertical rod 4, and the penetration is in contact. A limit frame 85 is fixed on the upper surface of the movable block 84. When the movable block 84 moves upward, it drives the limit frame 85 to move upward. A power-off switch 86 is fixed on the front of the right end of the reinforcing rod 6 to cut off the power. The inner wall of the gate 86 is provided with a power-off switch 87, and the power-off gate 86 is electrically connected to the power-off switch 87. The power-off switch 87 penetrates the limit frame 85 and is slidably connected at the penetration point. When the limit frame 85 moves upward, the power-off switch 87 is driven to move upward. When the power-off switch 87 moves upward to the top, the power-off gate 86 will not cut off the power to the hydraulic press body 1. Only at this time can the hydraulic press body 1 be started to work. When the protective door 5 is closed, the auxiliary mechanism 8 can push the movable block 84 to move through the sliding rod 73, drive the card block 82 to rotate to buckle into the limit groove 83, limit the protective door 5, and avoid the protective door 5 not being closed firmly, and the hydraulic press body 1 cannot be fully protected when the hydraulic press body 1 is working; the limit frame 85 is driven to move by the movement of the movable block 84, and the power-off switch 87 is used to control the power-off gate 86 to power on or off the hydraulic press body 1, so as to avoid the staff accidentally touching or starting the hydraulic press body 1 during maintenance, causing an accident.

[0033] In addition, the alarm device 9 includes a second spring 91, an alarm 92, a pressure sensor 93 and a push switch 94. One end of the second spring 91 is fixedly connected to the inner wall of the right side upright 4, and the other end of the second spring 91 is fitted with the side wall of the protrusion fixedly connected to the bottom surface of the movable block 84. When the movable block 84 moves downward, the protrusion on its bottom surface compresses the second spring 91. The side wall of the right end of the reinforcing rod 6 is fixed with an alarm 92, and the side wall of the alarm 92 is fixed with a pressure sensor 93. The alarm 92 and the pressure sensor 93 are electrically connected. The end of the pressure sensor 93 away from the alarm 92 passes through the second spring 91, and the penetration is fitted. The pressure sensor 93 always detects the pressure received by the second spring 91. A push switch 94 is fixed to the bottom surface of the alarm 92, and the alarm 92 is electrically connected to the push switch 94. When the sliding rod 73 slides upward to contact the push switch 94, it presses the push switch 94 upward to turn on the alarm 92. At this time, the alarm 92 starts to alarm. When the pressure sensor 93 detects that the pressure received by the second spring 91 reaches the maximum value, the alarm 92 stops alarming. The alarm device 9 starts the alarm 92 by sliding the sliding rod 73 upward. The pressure value of the second spring 91 is detected by the pressure sensor 93 until the alarm stops when the detection reaches the required area. The status of the protective door 5 is monitored to prevent the staff from starting the hydraulic press body 1 when the door is not closed.

[0034] When the present embodiment is working, when the protective door 5 is closed, the sliding rod 73 slides upward, pushing the movable block 84 to move upward. When the movable block 84 moves upward, it drives the clamping block 82 to rotate counterclockwise around the fixed rod 81. When the clamping block 82 rotates, it drives the movable block 84 to slide in the direction away from the clamping block 82. When the movable block 84 slides, it compresses the second spring 91. After the protective door 5 is closed, the clamping block 82 rotates to the horizontal direction and slides into the limiting groove 83 to lock the protective door 5. When the movable block 84 moves upward, it drives the limiting frame 85 to move upward. When the limiting frame 85 moves upward, it drives the power-off switch 87 to move upward. When the power-off switch 87 moves upward to the top, the power-off switch 86 will not The hydraulic press body 1 is powered off, and only then can the hydraulic press body 1 be started to work. When opening the protective door 5, first push the block 82 upwards, and then manually open the protective door 5. The opening of the protective door 5 drives the sliding rod 73 to slide downward, and at the same time, the movable block 84 is pushed by the second spring 91 to slide in the direction of the block 82, driving the block 82 to rotate clockwise. When the block 82 rotates clockwise, it drives the movable block 84 to move downward. The movable block 84 moves downward and drives the power-off switch 87 to slide downward. The power-off switch 87 slides downward, and controls the power-off switch 86 to power off the hydraulic press body 1, so that the hydraulic cylinder cannot be started when the hydraulic press body 1 is in the state where the protective door 5 is opened.

[0035] When the protective door 5 is closed, the sliding rod 73 slides upward. When the sliding rod 73 slides upward to contact the push switch 94, it presses the push switch 94 upward to turn on the alarm 92. At this time, the alarm 92 starts to alarm, and the protrusion on the bottom of the movable block 84 compresses the second spring 91. The pressure sensor 93 keeps detecting the pressure received by the second spring 91. When the pressure sensor 93 detects that the pressure received by the second spring 91 reaches the maximum value, the alarm 92 stops alarming.

[0036] 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 appended claims and their equivalents.

Claims

1. A hydraulic press with a protective structure, comprising a hydraulic press body (1), characterized in that: A support rod (2) is fixed in the middle of the hydraulic press body (1), a hydraulic cylinder is fixed on the upper part of the hydraulic press body (1), a hydraulic head (3) is detachably mounted on the bottom of the hydraulic cylinder, a vertical rod (4) is fixed on the upper surface of the lower part of the hydraulic press body (1), four groups of vertical rods (4) are provided, a protective door (5) is hinged on the side wall of the left vertical rod (4), the support rod (2) penetrates the reinforcing rod (6), and the penetration point is fixedly connected, the reinforcing rod (6) is in a semi-enclosed shape, the hydraulic press body (1) is provided with a protective mechanism (7) for facilitating the limiting of the hydraulic head (3) and splash prevention during operation, the protective mechanism (7) is provided with an auxiliary mechanism (8) for facilitating power off, and the protective mechanism (7) is provided with an alarm device (9) for detecting whether the protective door (5) is closed tightly; The protection mechanism (7) comprises a gear set (71), a threaded groove rod (72), a sliding rod (73), a protruding rod (74), a hinge structure (75), a baffle (76), a first spring (77), a push rod (78) and a limit rod (79), wherein the gear set (71) comprises a first gear and a second gear, wherein the first gear is fixedly connected to the upper surface of the protection door (5), and the second gear is rotatably connected to the upper surface of the left vertical rod (4), and the first gear and the second gear are meshed.

2. The hydraulic press with a protective structure according to claim 1, characterized in that: A threaded groove rod (72) passes through the vertical rod (4) and is rotatably connected at the penetration point. A threaded groove is provided on the outer wall of the threaded groove rod (72). The threaded groove rod (72) is fixedly connected to the bottom surface of the second gear. The vertical rod (4) on the left side passes through a sliding rod (73) and is slidably connected at the penetration point. The sliding rod (73) is in a semi-enclosed shape. A convex rod (74) is fixed on the inner wall of the sliding rod (73). The convex rod (74) passes through the vertical rod (4) on the left side and is slidably connected at the penetration point.

3. The hydraulic press with a protective structure according to claim 2, characterized in that: The outer wall of the protruding rod (74) is fitted with the thread groove, and one end of the protruding rod (74) away from the sliding rod (73) is slidably connected to the inner wall of the thread groove. The sliding rod (73) is provided with a hinge structure (75), and the hinge structure (75) includes a first hinge plate, a second hinge plate and a hinge rod, and the first hinge plate is hinged to the bottom surface of the sliding rod (73).

4. The hydraulic press with a protective structure according to claim 3, characterized in that: The second hinge rod is hinged on the upper surface of the lower part of the hydraulic press body (1); one end of the first hinge plate away from the sliding rod (73) and one end of the second hinge rod away from the lower part of the hydraulic press body (1) are hinged; the hinge of the first hinge plate and the second hinge plate are hinged with a hinge rod at the same time; a sliding groove is provided on a side wall of the hinge rod away from the hinge; the sliding groove and the side wall of the baffle (76) are slidably connected; a guide strip is fixed to the side wall of the baffle (76); the inner wall of the sliding groove and the outer wall of the guide strip are in contact with each other.

5. The hydraulic press with a protective structure according to claim 4, characterized in that: The outer walls of the three sides of the reinforcing rod (6) are provided with grooves, the upper surface of the inner wall of the groove is fixedly connected to the upper end of the first spring (77), the bottom end of the first spring (77) is fixed with a push rod (78), the side wall of the push rod (78) is slidably connected to the inner wall of the groove, the side wall in the groove passes through a limiting rod (79), and the passing point is slidably connected, and the upper end of the limiting rod (79) is slidably connected to the inclined surface of the push rod (78).

6. The hydraulic press with a protective structure according to claim 5, characterized in that: The auxiliary mechanism (8) comprises a fixed rod (81), a clamping block (82), a limiting groove (83), a movable block (84), a limiting frame (85), a power-off switch (86) and a power-off switch (87); the fixed rod (81) passes through the clamping block (82) and is rotatably connected at the penetration point; the upper surface of the protective door (5) is provided with a limiting groove (83); the outer wall of the clamping block (82) is hinged with a movable block (84); a protrusion is fixed on the bottom surface of the movable block (84); the protrusion passes through the right side vertical rod (4) and is in close contact with the penetration point.

7. The hydraulic press with a protective structure according to claim 6, characterized in that: A limit frame (85) is fixed on the upper surface of the movable block (84), a power-off switch (86) is fixed on the front of the right end of the reinforcing rod (6), a power-off switch (87) is arranged on the inner wall of the power-off switch (86), the power-off switch (86) is electrically connected to the power-off switch (87), and the power-off switch (87) passes through the limit frame (85) and is slidably connected at the penetration point.

8. The hydraulic press with a protective structure according to claim 7, characterized in that: The alarm device (9) comprises a second spring (91), an alarm (92), a pressure sensor (93) and a push switch (94); one end of the second spring (91) is fixedly connected to the inner wall of the right side upright pole (4); the other end of the second spring (91) is fitted with the side wall of the protrusion fixedly connected to the bottom surface of the movable block (84); the side wall of the right end of the reinforcing rod (6) is fixed with the alarm (92); the side wall of the alarm (92) is fixed with the pressure sensor (93); the alarm (92) and the pressure sensor (93) are electrically connected; one end of the pressure sensor (93) away from the alarm (92) passes through the second spring (91) and the penetration is fitted; the bottom surface of the alarm (92) is fixed with the push switch (94); the alarm (92) and the push switch (94) are electrically connected.

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