A new type of limit mechanism for position detection of hydraulic press moving table

Abstract

The present invention relates to the technical field of hydraulic presses, and specifically to a new type of limit mechanism for position detection of a hydraulic press moving platform, comprising: a hydraulic press; a moving device, the moving device comprising a guide rail, a moving platform being arranged on the guide rail through a driving device; a positioning component, the positioning component comprising a detection component and a plurality of signaling plates; an auxiliary positioning component, the auxiliary positioning component comprising a kinetic energy recovery component and a locking component. The present invention can save costs by arranging signaling plates on the ground and the top surface of the base, and arranging the detection component in the center of the bottom surface of the moving platform; the signaling plate is easy to install, and no pre-buried cables are required, which can save construction time; the signaling plate is in the shape of a quadrangular pyramid, which can prevent operators from tripping; the detection component is placed on top to avoid burning of the detection component due to oil and the like, thereby improving safety; the kinetic energy recovery component is used to absorb the kinetic energy of the moving platform, and when the moving platform moves again, the kinetic energy recovery component can release the absorbed kinetic energy, which can save electrical energy and reduce energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic presses, in particular to a novel limiting mechanism for position detection of a hydraulic press moving table. Background Art

[0002] In hydraulic press equipment, some large and heavy workpieces or molds cannot be directly placed in the hydraulic press using lifting equipment. In this case, a mobile workbench is required. The mobile workbench usually includes a mobile table, a mobile table guide rail, and a limit device. The mobile table can move back and forth between the working position and the external parking position of the hydraulic press by means of the guide rail. The workpiece and mold can be hoisted when the mobile table is at the external parking position, and then the mobile table is moved to the working position and then processed using the hydraulic press.

[0003] In the prior art, the guide rails of the mobile platform of a large hydraulic press are usually pre-buried in the ground and flush with the ground. The limit device is generally installed on the guide rails of the mobile platform. The limit detection of the mobile platform generally relies on the rolling of the rollers of the mobile platform to send signals. In actual use, it is easy for workers to step on the limit device located at the external docking position, generating an erroneous signal, causing the hydraulic system to stop working unexpectedly, which can easily cause property losses and safety accidents. At the same time, the operator's stepping direction and the rolling direction of the roller are usually different, which can easily cause damage to the detection device and bring additional safety risks. In addition, the factory environment is relatively complex. During the processing, various lubricating oils, hydraulic oils and sewage will flow along the ground. When the detection device comes into contact with these substances, it is easy to burn.

[0004] The existing improvement measures are to reduce other actions linked to the mobile platform's parking action as much as possible in the hydraulic control system, select higher safety level or waterproof and oil-proof detection limit, and add various protection measures, etc. However, the actual situation at the production site is very complicated and it is difficult to achieve the expected effect. The effect of conventional improvement measures is not very obvious. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a new type of limiting mechanism for position detection of a hydraulic press moving table.

[0006] The technical solution of the present invention is:

[0007] A new type of limit mechanism for position detection of a hydraulic press moving table, comprising:

[0008] A hydraulic press, the hydraulic press is installed in the foundation pit, the hydraulic press comprises a base, and a moving device is arranged above the base;

[0009] The moving device comprises a guide rail, which is mounted on the top surface of the base and extends to the guide rail grooves on both sides. A moving platform is provided on the guide rail through a driving device, and the moving platform is used to place the workpiece. The driving device is used to drive the moving platform to move along the guide rail;

[0010] A positioning assembly, the positioning assembly includes a detection assembly and four signaling plates, the detection assembly is located at the center of the bottom surface of the moving platform and is used to detect the position of the signaling plates, the signaling plates include two in-position signaling plates and two deceleration signaling plates, the in-position signaling plates and the deceleration signaling plates are used to mark the position where the driving device stops working and the position where it starts to decelerate, respectively, the signaling plates are in the shape of a quadrangular pyramid, a plurality of countersunk holes are evenly penetrated from top to bottom of the signaling plates, countersunk bolts are arranged in the countersunk holes, and a fixing assembly is arranged below the signaling plates on the ground between the guide rails;

[0011] An auxiliary positioning assembly is installed at both ends of the guide rail. The auxiliary positioning assembly includes a kinetic energy recovery assembly and a locking assembly. The kinetic energy recovery assembly is used to absorb the kinetic energy of the mobile platform, assist in stopping the movement of the mobile platform, and can release the absorbed kinetic energy to drive the mobile platform to move. The locking assembly is used to prevent the kinetic energy recovery assembly from releasing the absorbed kinetic energy.

[0012] Preferably, a guide groove is axially penetrated through the top surface of the guide rail.

[0013] Preferably, the driving device comprises a transmission shaft, which is rotatably mounted on the front and rear sides of the movable platform via transmission shaft brackets, and movable wheels are fixedly mounted on the transmission shaft and between the transmission shaft brackets, and the movable wheels are inserted into guide grooves.

[0014] Preferably, the transmission shaft on the front side is connected to a reduction gear box through a chain transmission assembly, the reduction gear box is connected to a first motor, and the first motor is fixedly installed on the front side of the moving platform.

[0015] Preferably, one of the in-position signaling plate and the deceleration signaling plate is located on the top surface of the base, and the remaining in-position signaling plates and the deceleration signaling plates are located on the ground between the guide rails.

[0016] Preferably, the spacing between the signal transmitting plates on the base is equal to the spacing between the signal transmitting plates on the ground.

[0017] Preferably, the fixing assembly includes an embedded plate, a plurality of threaded sleeves are fixedly provided on the top surface of the embedded plate, the threaded sleeves correspond one-to-one to the countersunk holes, the embedded plate and the threaded sleeves are embedded under the ground, and the signal transmitting plate is connected to the threaded sleeves by countersunk bolts.

[0018] Preferably, the kinetic energy recovery assembly includes a hydraulic damping rod, the tail end of the hydraulic damping rod is fixedly mounted on the top end of the guide rail through a fixing plate, an energy storage spring is sleeved on the hydraulic damping rod, and a deceleration slider is fixedly connected to the top end of the hydraulic damping rod.

[0019] Preferably, the deceleration slider is slidably connected to the guide rail, and a plurality of guide rods are provided on the side of the deceleration slider facing the fixed plate, and the guide rods penetrate the fixed plate and are slidably connected to the fixed plate.

[0020] Preferably, the locking assembly includes a push-pull electromagnet, which is vertically fixed on the left and right sides of the deceleration slider, and a sliding tooth plate is fixedly installed on the bottom end of the push-pull electromagnet push rod, and a locking tooth plate is clamped under the sliding tooth plate, and the locking tooth plate is fixedly connected to the guide rail.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention sets a signaling board on the ground and the top surface of the base, and sets a detection component in the center of the bottom surface of the mobile platform. When there are only two parking positions and the mobile platform moves in a straight line, only one detection component is needed to realize the function that can be realized by four detection components, which can save costs.

[0023] 2. The signal board is easy to install and does not require pre-buried cables, which can save construction time. The signal board itself does not generate signals and will not generate erroneous signals due to operator stepping on it. At the same time, the signal board is in the shape of a quadrangular pyramid, which can prevent operators from tripping and reduce safety hazards. In addition, the detection component is placed on top to prevent the detection component from being burned by oil and other factors, thereby improving safety;

[0024] 3. By setting up an auxiliary positioning component and utilizing the kinetic energy recovery component to absorb the kinetic energy of the mobile platform, the mobile platform can be assisted in stopping. When the mobile platform moves again, the kinetic energy recovery component can release the absorbed kinetic energy to drive the mobile platform to move, thereby reducing the power of the first motor, saving electrical energy, and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the hydraulic press in the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the mobile device in the present invention;

[0028] Figure 4 is a second schematic diagram of the structure of the mobile device in the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the positioning component in the present invention;

[0030] Figure 6 It is a structural schematic diagram of the signal sending board in the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the auxiliary positioning component in the present invention;

[0032] Figure 8 Based Figure 7 A schematic diagram of the enlarged structure in the middle.

[0033] The meanings of the punctuation marks in the figure are:

[0034] 1. Ground; 2. Foundation pit; 3. Guide rail groove;

[0035] 4. Hydraulic press; 41. Base; 42. Guide column; 43. Pressure block; 44. Top plate; 45. Hydraulic cylinder;

[0036] 5. Moving device; 51. Guide rail; 52. Guide groove; 53. Moving platform; 54. Moving wheel; 55. Transmission shaft; 56. Transmission shaft bracket; 57. First motor; 58. Reduction gear box; 59. Chain transmission assembly;

[0037] 6. Positioning assembly; 61. Detection assembly; 62. Signaling plate; 621. First in-position signaling plate; 622. First deceleration signaling plate; 623. Second deceleration signaling plate; 624. Second in-position signaling plate; 63. Countersunk hole; 64. Embedded plate; 65. Threaded sleeve; 66. Countersunk bolt;

[0038] 7. Auxiliary positioning assembly; 71. Hydraulic damping rod; 72. Energy storage spring; 73. Fixed plate; 74. Deceleration slider; 75. Guide rod; 76. Push-pull electromagnet; 77. Sliding tooth plate; 78. Locking tooth plate. DETAILED DESCRIPTION

[0039] 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.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] The present invention describes the above technical solution in detail through the following embodiments:

[0042] Embodiment 1:

[0043] See attached Figure 1-8 , a new type of limit mechanism for position detection of a hydraulic press moving table, comprising:

[0044] The hydraulic press 4 is installed in the foundation pit 2 . The hydraulic press 4 includes a base 41 . A moving device 5 is provided above the base 41 .

[0045] Four guide columns 42 are fixedly installed on the top surface of the base 41 by bolts, and a pressure block 43 is slidably installed on the guide column 42. A top plate 44 is fixedly installed on the top of the guide column 42 by bolts. A hydraulic cylinder 45 is fixedly installed in the center of the top surface of the top plate 44 by bolts. The piston rod of the hydraulic cylinder 45 passes through the top plate 44 and is fixedly connected to the pressure block 43 by bolts.

[0046] The hydraulic cylinder 45 is capable of driving the pressure block 43 to move along the guide column 42 when in operation.

[0047] The moving device 5 includes a guide rail 51, which is installed on the top surface of the base 41 and extends to both sides into the guide rail groove 3. A moving platform 53 is provided on the guide rail 51 through a driving device. The moving platform 53 is used to place workpieces, and the driving device is used to drive the moving platform 53 to move along the guide rail 51.

[0048] The top surface of the guide rail 51 is flush with the ground 1 , and a 50 mm space is left between the bottom surface of the moving platform 53 and the ground surface of the base 41 and the ground 1 .

[0049] A guide groove 52 is axially formed through the top surface of the guide rail 51 .

[0050] The guide groove 52 is located in the middle of the top surface of the guide rail 51 .

[0051] The driving device includes a transmission shaft 55 , which is rotatably mounted on the front and rear sides of the moving platform 53 through transmission shaft brackets 56 . A moving wheel 54 is clamped on the transmission shaft 55 and between the transmission shaft brackets 56 . The moving wheel 54 is clamped into the guide groove 52 .

[0052] The transmission shaft brackets 56 are welded and installed on the front and rear sides of the moving platform 53, and each side has four transmission shaft brackets 56. The four transmission shaft brackets 56 form a group of two, and the two groups of transmission shaft brackets 56 are symmetrical. The transmission shaft 55 and the transmission shaft brackets 56 are connected by bearings.

[0053] The moving wheel 54 is a metal wheel, and the width of the moving wheel 54 is the same as the guide groove 52. The guide groove 52 is used to limit the moving direction of the moving wheel 54 to prevent the moving wheel 54 from running off due to surface wear.

[0054] The front transmission shaft 55 is connected to a reduction gear box 58 via a chain transmission assembly 59 , and the reduction gear box 58 is connected to a first motor 57 . The first motor 57 is fixedly mounted on the front side of the moving platform 53 via bolts.

[0055] The output shaft of the first motor 57 is engaged with the input shaft of the reduction gear box 58 , the output shaft of the reduction gear box 58 is engaged with the sprocket of the chain transmission assembly 59 , and another sprocket of the chain transmission assembly 59 is engaged with the transmission shaft 55 .

[0056] When the first motor 57 is working, it can drive the reduction gear box 58 to work, thereby driving the transmission shaft 55 to rotate through the chain transmission assembly 59, and then driving the moving wheel 54 to rotate, so as to realize the movement of the moving platform 53.

[0057] Positioning assembly 6, the positioning assembly 6 includes a detection assembly 61 and four signaling plates 62, the detection assembly 61 is located at the center of the bottom surface of the moving platform 53 and is used to detect the position of the signaling plate 62, the signaling plate 62 includes two in-position signaling plates and two deceleration signaling plates, the in-position signaling plates and the deceleration signaling plates are used to mark the position where the driving device stops working and the position where it starts to decelerate, respectively, the signaling plate 62 is in the shape of a quadrangular pyramid, and the signaling plate 62 is evenly penetrated by a plurality of countersunk holes 63 from top to bottom, and the countersunk holes 66 are arranged in the countersunk holes 63, and a fixing assembly is arranged below the signaling plate 62 at the ground 1 between the guide rails 51;

[0058] The detection component 61 adopts a well-known inductive sensor, and the maximum detection range of the sensor does not exceed 30mm.

[0059] The signaling plate 62 is made of Q235 material and has a height of 10 mm.

[0060] The detection component 61 is rotated and the distance from the end surface to the top surface of the signal transmitting plate 62 is adjusted to be 25 mm.

[0061] When the moving platform 53 moves, it can drive the detection component 61 to move, thereby changing the distance between the detection component 61 and the signal transmitting plate 62. The detection component 61 can sense the approach of the metal material, thereby determining the position of the signal transmitting plate 62 and further determining the position of the moving platform 53.

[0062] The shape of the signaling plate 62 can prevent an operator from tripping.

[0063] One of the in-position signaling plate and the deceleration signaling plate is located on the top surface of the base 41 , and the remaining in-position signaling plates and the deceleration signaling plates are located on the ground 1 between the guide rails 51 .

[0064] The in-position signaling plate includes a first in-position signaling plate 621 and a second in-position signaling plate 624 , and the deceleration signaling plate includes a first deceleration signaling plate 622 and a second deceleration signaling plate 623 .

[0065] The first in-position signaling plate 621 and the first deceleration signaling plate 622 are fixedly mounted on the top surface of the base 41 by countersunk bolts 66. The first in-position signaling plate 621 is located in the center of the top surface of the base 41, and the first deceleration signaling plate 622 is located on the top surface of the base 41 near the first motor 57.

[0066] When the moving platform 53 moves toward the base 41 , when the detection component 61 moves to the top of the first deceleration signal sending plate 622 , the speed of the first motor 57 decreases, and when the detection component 61 moves to the top of the first in-position signal sending plate 621 , the first motor 57 stops working.

[0067] The second deceleration signaling plate 623 and the second in-position signaling plate 624 are located on the ground 1 between the guide rails 51. The second deceleration signaling plate 623 is close to the first deceleration signaling plate 622.

[0068] When the moving platform 53 is away from the base 41 and the detection assembly 61 moves to the position just above the second deceleration signaling plate 623 , the speed of the first motor 57 decreases. When the detection assembly 61 moves to the position just above the second in-position signaling plate 624 , the first motor 57 stops working.

[0069] It should be noted that, in the present invention, a counting method is required to be adopted to determine the moving state of the mobile station 53.

[0070] The detection component 61 detects the signals of the first in-position signal transmitting plate 621, the first deceleration signal transmitting plate 622, the second deceleration signal transmitting plate 623 and the second in-position signal transmitting plate 624 in the order of 1, 2, 3, 4. There are 3 signal alternations between receiving signal 1 and signal 4. At this time, a counter is needed to count and record these 3 signal alternations. Every time 3 complete signal alternations are recorded, it is considered that one count is completed, which is equivalent to the mobile station 53 completing one movement from the first in-position signal transmitting plate 621 to the second in-position signal transmitting plate 624.

[0071] Then, another counter is needed to record how many complete counts the previous counter has completed.

[0072] When the mobile platform 53 moves from the base 41 to the ground 1, the control system will obtain 4 signals, namely, signals 1, 2, 3, and 4. At this time, the counter 1 obtains 3 signal alternations, that is, completes 1 counting cycle. At this time, the counter 2 counts to 1.

[0073] When the mobile platform 53 moves from the ground 1 to the base 41, the control system will again obtain signals 4, 3, 2, 1, a total of 4 signals. At this time, counter 1 obtains 3 signal alternations again, that is, it completes 1 counting cycle again. At this time, counter 2 counts to 2.

[0074] In the control system, if the count obtained by the counter 2 is an odd number, the corresponding mobile stage 53 moves from the first in-position signal transmitting board 621 to the second in-position signal transmitting board 624; if the count obtained by the counter 2 is an even number, the corresponding mobile stage 53 moves from the second in-position signal transmitting board 624 to the first in-position signal transmitting board 621. The function of the counter 2 is equivalent to a direction indicator, which is equivalent to a control vector in the control program.

[0075] After the moving platform 53 reaches the first in-position signaling plate 621 or the second in-position signaling plate 624, the detection component 61 will continue to send signals, but no alternating signals will appear. At this time, the counter 2 has just counted once. With these two changes as judgment conditions, when the control system detects that the counter 2 has just counted once and the detection component 61 enters a state of continuously sending signals, the first motor 57 can be stopped. At this time, the moving process of the moving platform 53 is completely completed.

[0076] If, during the movement of the mobile station 53, it stops due to unexpected reasons other than power outage (the entire device has power all the time), at this time, because counter 1 has not obtained three complete signal alternations in succession, counter 2 has not changed in count. After the movement of the mobile station 53 is resumed, because counter 2 is equivalent to a control vector, the mobile station 53 maintains its previous moving direction unchanged, which means that the mobile station 53 can correctly complete the remaining movement process.

[0077] The spacing between the signal transmitting plates 62 on the base 41 is equal to the spacing between the signal transmitting plates 62 on the ground 1 .

[0078] The distance between the first in-position signal transmitting plate 621 and the first deceleration signal transmitting plate 622 is equal to the distance between the second deceleration signal transmitting plate 623 and the second in-position signal transmitting plate 624 , which can ensure that the braking distance of the moving platform 53 is equal.

[0079] The fixing assembly includes an embedded plate 64 , on the top of which four threaded sleeves 65 are welded. The threaded sleeves 65 correspond one to one with the countersunk holes 63 . The embedded plate 64 and the threaded sleeves 65 are embedded under the ground 1 , and the signal transmitting plate 62 is connected to the threaded sleeves 65 by countersunk bolts 66 .

[0080] By providing the embedded plate 64 and the threaded sleeve 65 , the replacement of the second deceleration signal sending plate 623 and the second in-position signal sending plate 624 can be facilitated, thereby avoiding damage to the ground 1 between the guide rails 51 .

[0081] When the operator of this embodiment uses this device, he controls the first motor 57 to work. When the first motor 57 works, it can drive the reduction gear box 58 to work, thereby driving the transmission shaft 55 to rotate through the chain transmission assembly 59, and then driving the moving wheel 54 to rotate, so as to realize the movement of the moving platform 53.

[0082] When the moving platform 53 moves toward the base 41 , when the detection component 61 moves to the top of the first deceleration signal sending plate 622 , the speed of the first motor 57 decreases, and when the detection component 61 moves to the top of the first in-position signal sending plate 621 , the first motor 57 stops working.

[0083] When the moving platform 53 is away from the base 41 and the detection assembly 61 moves to the position just above the second deceleration signaling plate 623 , the speed of the first motor 57 decreases. When the detection assembly 61 moves to the position just above the second in-position signaling plate 624 , the first motor 57 stops working.

[0084] Embodiment 2:

[0085] See attached Figure 7-8 , which are different from Example 1:

[0086] Auxiliary positioning components 7 are provided at both ends of the guide rail 51, and the auxiliary positioning components 7 include a kinetic energy recovery component and a locking component. The kinetic energy recovery component is used to absorb the kinetic energy of the moving platform 53, assist in stopping the movement of the moving platform 53, and can release the absorbed kinetic energy to drive the moving platform 53 to move. The locking component is used to prevent the kinetic energy recovery component from releasing the absorbed kinetic energy.

[0087] The kinetic energy recovery component includes a hydraulic damping rod 71, the tail end of which is fixedly mounted on the top end of the guide rail 51 through a fixing plate 73, an energy storage spring 72 is sleeved on the hydraulic damping rod 71, and a deceleration slider 74 is fixedly connected to the top of the hydraulic damping rod 71.

[0088] When the movable platform 53 moves toward the base 41, when the detection component 61 moves to the top of the first deceleration signal transmitting plate 622, the transmission shaft bracket 56 just abuts against the deceleration slider 74 at the rear end of the guide rail 51. When the movable platform 53 moves away from the base 41, when the detection component 61 moves to the top of the second deceleration signal transmitting plate 623, the transmission shaft bracket 56 just abuts against the deceleration slider 74 at the front end of the guide rail 51.

[0089] At this time, the first motor 57 reduces its rotation speed and uses the friction of the moving wheel 54 to reduce the moving speed of the moving platform 53. At the same time, the transmission shaft bracket 56 squeezes the deceleration slider 74, thereby compressing the hydraulic damping rod 71 and the energy storage spring 72.

[0090] The hydraulic damping rod 71 can absorb the impact force of the moving platform 53 , and the energy storage spring 72 is compressed to store the kinetic energy originally belonging to the moving platform 53 , thereby assisting the first motor 57 to reduce the speed of the moving platform 53 .

[0091] The deceleration slider 74 is slidably connected to the guide rail 51 . A plurality of guide rods 75 are provided on the side of the deceleration slider 74 facing the fixed plate 73 . The guide rods 75 penetrate the fixed plate 73 and are slidably connected to the fixed plate 73 .

[0092] The guide rod 75 can limit the moving direction of the deceleration slider 74 to prevent the deceleration slider 74 from deviating.

[0093] The locking assembly includes a push-pull electromagnet 76, which is vertically fixed on the left and right sides of the deceleration slider 74 by bolts. A sliding tooth plate 77 is fixedly installed at the bottom end of the push rod of the push-pull electromagnet 76, and a locking tooth plate 78 is clamped under the sliding tooth plate 77. The locking tooth plate 78 is welded to the guide rail 51.

[0094] The serrations on the sliding tooth plate 77 and the locking tooth plate 78 are in opposite directions. When the deceleration slider 74 moves toward the fixed plate 73, the sliding tooth plate 77 will slide toward the locking tooth plate 78, and the locking tooth plate 78 will not prevent the sliding tooth plate 77 from moving. When the moving platform 53 stops moving, the hydraulic damping rod 71 and the energy storage spring 72 are in a compressed state, and the elastic force of the energy storage spring 72 will drive the hydraulic damping rod 71 to return to its original state and drive the sliding tooth plate 77 to move toward the moving platform 53. At this time, the locking tooth plate 78 will prevent the sliding tooth plate 77 from moving and keep the energy storage spring 72 in a compressed state.

[0095] When the push-pull electromagnet 76 is powered on, it can drive the sliding tooth plate 77 to move upward, thereby releasing the locking state of the locking tooth plate 78 and the sliding tooth plate 77. At this time, the elastic force of the energy storage spring 72 can drive the moving platform 53 to move, thereby reducing the starting power of the first motor 57 and achieving energy saving.

[0096] The auxiliary positioning assembly 7 mechanism provided in the present invention, when in use, when the moving platform 53 is in a deceleration state, the transmission shaft bracket 56 will squeeze the deceleration slider 74, thereby compressing the hydraulic damping rod 71 and the energy storage spring 72.

[0097] The hydraulic damping rod 71 can absorb the impact force of the moving platform 53 , and the energy storage spring 72 is compressed to store the kinetic energy originally belonging to the moving platform 53 , thereby assisting the first motor 57 to reduce the speed of the moving platform 53 .

[0098] At this time, the sliding tooth plate 77 will slide toward the locking tooth plate 78, and the locking tooth plate 78 will not prevent the sliding tooth plate 77 from moving.

[0099] When the moving platform 53 stops moving, the hydraulic damping rod 71 and the energy storage spring 72 are in a compressed state. The elastic force of the energy storage spring 72 will drive the hydraulic damping rod 71 to return to its original state and drive the sliding tooth plate 77 to move toward the moving platform 53. At this time, the locking tooth plate 78 will prevent the sliding tooth plate 77 from moving and keep the energy storage spring 72 in a compressed state.

[0100] When the first motor 57 starts to work, the push-pull electromagnet 76 is energized and works synchronously, and the push-pull electromagnet 76 can drive the sliding tooth plate 77 to move upward, thereby releasing the locking state of the locking tooth plate 78 and the sliding tooth plate 77. At this time, the elastic force of the energy storage spring 72 can drive the moving platform 53 to move, thereby reducing the starting power of the first motor 57 and achieving energy saving.

[0101] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new type of limit mechanism for position detection of hydraulic press moving table, characterized in that: include: A hydraulic press (4), the hydraulic press (4) being installed in the foundation pit (2), the hydraulic press (4) comprising a base (41), and a moving device (5) being provided above the base (41); The moving device (5) comprises a guide rail (51), the guide rail (51) being mounted on the top surface of the base (41) and extending to both sides into the guide rail groove (3), a moving platform (53) being provided on the guide rail (51) via a driving device, the moving platform (53) being used to place a workpiece, and the driving device being used to drive the moving platform (53) to move along the guide rail (51); A positioning assembly (6), the positioning assembly (6) comprising a detection assembly (61) and four signaling plates (62), the detection assembly (61) being located at the center of the bottom surface of the moving platform (53) and used for detecting the position of the signaling plates (62), the signaling plates (62) comprising two in-position signaling plates and two deceleration signaling plates, the in-position signaling plates and the deceleration signaling plates being used for marking the position where the driving device stops working and the position where deceleration starts, respectively, the signaling plates (62) are in the shape of a quadrangular pyramid, the signaling plates (62) are evenly penetrated by a plurality of countersunk holes (63) from top to bottom, the countersunk holes (63) being provided with countersunk bolts (66), and a fixing assembly being provided below the signaling plates (62) at the ground (1) between the guide rails (51); An auxiliary positioning assembly (7), the auxiliary positioning assembly (7) being mounted at both ends of the guide rail (51), the auxiliary positioning assembly (7) comprising a kinetic energy recovery assembly and a locking assembly, the kinetic energy recovery assembly being used to absorb the kinetic energy of the moving platform (53), assist in stopping the movement of the moving platform (53), and being able to release the absorbed kinetic energy to drive the moving platform (53) to move, and the locking assembly being used to prevent the kinetic energy recovery assembly from releasing the absorbed kinetic energy.

2. A new type of limit mechanism for position detection of a hydraulic press moving table as claimed in claim 1, characterized in that: A guide groove (52) is axially penetrated through the top surface of the guide rail (51).

3. A new type of limit mechanism for position detection of a hydraulic press moving table as claimed in claim 2, characterized in that: The driving device comprises a transmission shaft (55), the transmission shaft (55) being rotatably mounted on the front and rear sides of the moving platform (53) via transmission shaft brackets (56), and a moving wheel (54) being fixedly mounted on the transmission shaft (55) and between the transmission shaft brackets (56), and the moving wheel (54) being snapped into the guide groove (52).

4. A new type of limit mechanism for position detection of a hydraulic press moving table as claimed in claim 3, characterized in that: The transmission shaft (55) on the front side is connected to a reduction gear box (58) via a chain transmission assembly (59); the reduction gear box (58) is connected to a first motor (57); and the first motor (57) is fixedly mounted on the front side of the moving platform (53).

5. A new type of limit mechanism for position detection of a hydraulic press moving table as claimed in claim 1, characterized in that: One of the in-position signaling plate and the deceleration signaling plate is located on the top surface of the base (41), and the remaining in-position signaling plates and the deceleration signaling plates are located on the ground (1) between the guide rails (51).

6. A new type of limit mechanism for position detection of a hydraulic press moving table as claimed in claim 5, characterized in that: The spacing between the signal transmitting plates (62) on the base (41) is equal to the spacing between the signal transmitting plates (62) on the ground (1).

7. A new type of limit mechanism for position detection of a hydraulic press moving table as claimed in claim 6, characterized in that: The fixing assembly comprises an embedded plate (64), a plurality of threaded sleeves (65) are fixedly provided on the top surface of the embedded plate (64), the threaded sleeves (65) correspond to the countersunk holes (63) one by one, the embedded plate (64) and the threaded sleeves (65) are embedded under the ground (1), and the signal transmitting plate (62) is connected to the threaded sleeves (65) via countersunk bolts (66).

8. A new type of limit mechanism for position detection of a hydraulic press moving table as claimed in claim 1, characterized in that: The kinetic energy recovery assembly comprises a hydraulic damping rod (71), the tail end of the hydraulic damping rod (71) being fixedly mounted on the top end of the guide rail (51) via a fixing plate (73), an energy storage spring (72) being sleeved on the hydraulic damping rod (71), and a deceleration slider (74) being fixedly connected to the top end of the hydraulic damping rod (71).

9. A new type of limit mechanism for position detection of a hydraulic press moving table as claimed in claim 8, characterized in that: The deceleration slider (74) is slidably connected to the guide rail (51); a plurality of guide rods (75) are provided on the side of the deceleration slider (74) facing the fixed plate (73); the guide rods (75) penetrate the fixed plate (73) and are slidably connected to the fixed plate (73).

10. A new type of limit mechanism for position detection of a hydraulic press moving table as claimed in claim 9, characterized in that: The locking assembly comprises a push-pull electromagnet (76), the push-pull electromagnet (76) being vertically fixedly mounted on the left and right sides of the deceleration slider (74), a sliding tooth plate (77) being fixedly mounted on the bottom end of the push rod of the push-pull electromagnet (76), a locking tooth plate (78) being clamped below the sliding tooth plate (77), and the locking tooth plate (78) being fixedly connected to the guide rail (51).

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