Jack with built-in stroke measuring device and installation method

Abstract

The present invention relates to the technical field of jacks, and more particularly to a jack with a built-in stroke measuring device and an installation method thereof, wherein the jack with a built-in stroke measuring device comprises a jack cylinder, a stroke measuring device, and a connecting rope, wherein the jack cylinder has a receiving cavity, and the stroke measuring device is arranged in the receiving cavity, and the stroke measuring device comprises a housing, a guide assembly, and a collecting assembly, wherein the housing has a first cavity, the housing has an inlet, the collecting assembly and the guide assembly are arranged in the first cavity, and the collecting assembly is rotatable relative to the first cavity, and the connecting rope passes through the housing inlet and extends into the first cavity, the connecting rope is at least partially wrapped around the guide assembly, and one end of the connecting rope is connected to the collecting assembly, and the collecting assembly is provided with a wire groove spirally arranged along the extension direction of the housing to accommodate the connecting rope. The jack with a built-in stroke measuring device of the present invention avoids interference from underground objects and improves measurement accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of jacks, and in particular to a jack with a built-in stroke measuring device. Background Art

[0002] A jack is a lightweight lifting device that uses a rigid lifting member as a working device and, through top and bottom connections, lifts heavy objects within a limited stroke. It is primarily used in factories, mines, transportation, and other sectors for vehicle repair and other lifting and supporting tasks. With the development of automation, informatization, and intelligent technologies, engineering machinery, auxiliary machinery, lifting machinery, and other equipment that rely on jacks for state adjustment are placing higher demands on the technical performance of jacks. Digital jacks with stroke measurement and sensing capabilities are of great practical significance in promoting the automation and intelligent control of these equipment.

[0003] A related art proposes a method for automatically measuring and controlling the stroke of a hydraulic support push jack. During use underground, dust accumulates on the infrared emitter and coal blocks interfere with measurement, resulting in a decrease in measurement accuracy. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a jack with a built-in stroke measurement device to avoid interference from objects during measurement and improve measurement accuracy.

[0005] An embodiment of the present invention further provides a method for installing a jack with a built-in stroke measuring device.

[0006] A jack with a built-in stroke measuring device according to an embodiment of the present invention includes: a jack cylinder having a receiving cavity;

[0007] A stroke measuring device and a connecting rope, wherein the stroke measuring device is arranged in the accommodating cavity and comprises a housing, a guide assembly and a collecting assembly.

[0008] The shell has a first cavity, the shell has an inlet, the collecting assembly and the guide assembly are arranged in the first cavity, and the collecting assembly is rotatable relative to the first cavity, the connecting rope passes through the shell inlet and extends into the first cavity, the connecting rope is at least partially wrapped around the guide assembly, one end of the connecting rope is connected to the collecting assembly, and the collecting assembly is provided with a wire groove spirally arranged along the extension direction of the shell to accommodate the connecting rope.

[0009] The built-in stroke measuring device jack of the embodiment of the present invention avoids interference from underground objects and improves measurement accuracy.

[0010] In some embodiments, the collecting assembly includes a collecting cylinder, a transmission shaft and a torsion spring. The transmission shaft is arranged in the first cavity and is rotatable relative to the first cavity. The collecting cylinder and the torsion spring are sleeved on the transmission shaft. The collecting cylinder is provided with the wire groove. One end of the torsion spring is connected to the transmission shaft, and one end of the torsion spring is connected to the shell.

[0011] In some embodiments, the guide assembly includes a first guide component and a second guide component, the first guide component is arranged at the inlet of the shell, the second guide component is arranged at one end of the first cavity adjacent to the collection component, and the rotation direction of the first guide component is orthogonal to the rotation direction of the second guide component, and the connecting rope is at least partially in contact with the first guide component and the second guide component.

[0012] In some embodiments, the guide assembly further includes a third guide component, and the third guide component has the same rotation direction as the second guide component.

[0013] The third guide component includes a third shaft and a third guide wheel. The third guide wheel is sleeved on the third shaft and is rotatable relative to the third shaft.

[0014] In some embodiments, the third guide component further includes a third limiting member, and the third limiting member is sleeved on the third shaft to limit the third guide wheel.

[0015] In some embodiments, the jack with a built-in stroke measuring device further includes a filter element, the filter element being disposed at the inlet of the housing, the filter element having a first hole and a second hole, the first hole including a first section, a second section, and a third section that are sequentially connected, the end of the first section away from the second section being connected to the accommodating cavity, the end of the third section away from the second section being connected to the first cavity, the radial dimension of the first section gradually decreasing in a direction adjacent to the second section,

[0016] One end of the second hole is communicated with an end of the first section adjacent to the second section, and the other end of the second hole is communicated with the accommodating cavity.

[0017] In some embodiments, the jack with built-in stroke measuring device further includes a transmission component and an angle measuring component, one end of the transmission component is connected to the transmission shaft, and the angle measuring component is connected to the transmission component to monitor the rotation angle of the transmission component.

[0018] In some embodiments, the collecting assembly further comprises a connecting member and a piston rod, wherein one end of the connecting member is connected to an end of the connecting rope away from the collecting assembly, and the other end of the connecting member is threadedly connected to the piston rod.

[0019] In some embodiments, the jack with a built-in stroke measuring device further includes a filter, a guide hole is provided on the cylinder of the jack, and a filter is provided in the guide hole.

[0020] The method for installing a jack with a built-in stroke measuring device according to an embodiment of the present invention includes:

[0021] Assemble the stroke measuring device and the installation and connection fixture, clamp the connector on the installation and connection fixture, connect the installation screw to the installation and connection fixture, place the stroke measuring device in the jack cylinder housing, install the stroke measuring device in the final position by tapping the installation screw, and install the set screw to secure the stroke measuring device;

[0022] Separate the installation and connection fixture from the housing, pull the connector and the connecting rope out of the jack cylinder, separate the connector from the installation and connection fixture, and connect the connector to the piston rod;

[0023] Install the guide sleeve and the retractable piston rod on the jack cylinder, install the electrical plug, and connect the electrical plug to the stroke measuring device.

[0024] The method for installing a jack with a built-in stroke measuring device according to an embodiment of the present invention installs the stroke measuring device inside the jack, thereby preventing the stroke measuring device from being interfered with by objects during measurement and improving measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of a jack with a built-in stroke measuring device according to an embodiment of the present invention.

[0026] Figure 2 yes Figure 1 A magnified schematic diagram of area A in the middle.

[0027] Figure 3 This is the second cross-sectional view of the jack with a built-in stroke measuring device according to an embodiment of the present invention.

[0028] Figure 4 This is the third cross-sectional view of the jack with a built-in stroke measuring device according to an embodiment of the present invention.

[0029] Figure 5 Schematic diagram of installing a connection fixture according to an embodiment of the present invention.

[0030] Figure 6 Schematic diagram of a jack with a built-in stroke measuring device according to an embodiment of the present invention.

[0031] Figure 7 It is a schematic diagram and installation diagram of a jack with a built-in stroke measuring device according to an embodiment of the present invention.

[0032] Figure 8Schematic diagram of a jack with a built-in stroke measuring device according to an embodiment of the present invention.

[0033] Figure 9 Schematic diagram of a collecting cylinder according to an embodiment of the present invention.

[0034] Reference numerals:

[0035] Connecting rope 1,

[0036] Jack cylinder 2,

[0037] Shell 3, first cavity 31, third hole 32,

[0038] Guide assembly 4, first guide component 41, first shaft 411, first guide wheel 412, first stopper 413, second guide component 42, second shaft 421, second guide wheel 422, second stopper 423, third guide component 43, third shaft 431, third guide wheel 432, third stopper 433, fourth guide component 44, fourth shaft 441, fourth guide wheel 442, third stopper 443, connecting frame 45,

[0039] Collection component 5, wire groove 51, collection tube 52, transmission shaft 53, torsion spring 54, transmission component 55, angle measurement component 56,

[0040] Filter element 6, first hole 61, first section 611, second section 612, third section 613, second hole 62,

[0041] Connector 7, mounting screw 8,

[0042] Install the connecting fixture 9, the gripping plate base 91, the inserting gear 911, the reinforcing rib plate 92, the connecting head 93, the fastening nut 10, the electrical plug 11, and the connecting seat 12. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0044] The embodiment of the present invention includes a jack with a built-in stroke measuring device, comprising: a jack cylinder 2, a stroke measuring device and a connecting rope 1. The jack cylinder 2 has a receiving cavity, and the stroke measuring device is arranged in the receiving cavity. The stroke measuring device includes a housing 3, a guide assembly 4 and a collecting assembly 5.

[0045] The shell 3 has a first cavity 31, and the shell 3 has an inlet. The collecting assembly 5 and the guide assembly 4 are arranged in the first cavity 31, and the collecting assembly 5 is rotatable relative to the first cavity 31. The connecting rope 1 passes through the inlet of the shell 3 and extends into the first cavity 31. The connecting rope 1 is at least partially wrapped around the guide assembly 4. One end of the connecting rope 1 is connected to the collecting assembly 5. The collecting assembly 5 is provided with a wire groove 51 spirally arranged along the extension direction of the shell 3 to accommodate the connecting rope 1.

[0046] The built-in stroke measuring device jack of the embodiment of the present invention avoids interference from underground objects and improves measurement accuracy.

[0047] Specifically, if Figures 1 to 9 As shown, the jack cylinder 2 extends in the up-down direction, the shell 3 extends in the up-down direction, the stroke measuring device is installed at the lower end of the jack cylinder 2, the stroke measuring device is connected to one end of the connecting rope 1, and the other end of the connecting rope 1 is connected to the jack piston rod, that is, the lower end of the connecting rope 1 is connected to the stroke measuring device, and the upper end of the connecting rope 1 is connected to the piston rod of the jack. When the piston rod of the jack moves in the up-down direction, the piston rod drives the connecting rope 1 to move in the up-down direction. The displacement of the piston rod is measured by measuring the displacement of the connecting rope 1, and then the stroke of the jack is measured.

[0048] The collecting assembly 5 extends in the up-down direction and is provided with a wire groove 51 spirally arranged in the up-down direction, so that the connecting rope 1 can be collected into the wire groove 51 when the collecting assembly 5 rotates.

[0049] The shell 3 has a first cavity 31 therein and an inlet. The connecting rope 1 passes through the inlet of the shell 3 from top to bottom and enters the first cavity 31. Then, the connecting rope 1 is at least partially wound around the guide assembly 4 to guide the connecting rope 1, so that the connecting rope 1 is connected to the collecting assembly 5. The movement of the connecting rope 1 in the up and down directions is guided to the movement in the left and right directions, and the collecting assembly 5 rotates in the left and right directions to collect and release the connecting rope 1, so as to avoid interference between the collecting assembly 5 and the connecting rope 1. This facilitates winding the connecting rope 1 around the collecting assembly 5.

[0050] In other words, the collecting assembly 5 rotates on a horizontal plane, which is perpendicular to the up-down direction. The horizontal plane is a plane where the left-right direction and the front-back direction are located. The left-right direction is perpendicular to the front-back direction, and the front-back direction is perpendicular to the up-down direction.

[0051] The collecting component 5 is provided with a wire groove 51 spirally arranged in the up and down direction. When collecting, the collecting component 5 rotates to collect the connecting rope 1 into the wire groove 51. The wire groove 51 is suitable for limiting the connecting rope 1 to avoid the connecting rope 1 from overlapping. Even if the collecting component 5 rotates one circle, the corresponding displacement of the connecting rope 1 in the up and down direction remains unchanged, or it can be understood that the corresponding displacement of the connecting rope 1 in the up and down direction remains unchanged when the collecting component 5 rotates a certain angle, thereby avoiding the connecting rope 1 wrapped around the collecting component 5 from overlapping and affecting the accuracy of the stroke measurement.

[0052] The built-in stroke measuring device jack of the embodiment of the present invention avoids interference and influence of external objects on the stroke measuring device during the operation of the jack by setting the jack in the jack cylinder, and also avoids collision of the stroke measuring device by external objects, and avoids tilting of the stroke measuring device. By setting a connecting rope 1, the connecting rope 1 is connected to the piston rod. When the piston rod moves in the up and down directions, the piston rod drives the connecting rope 1 to move in the up and down directions, and then measures the displacement of the connecting rope 1 in the up and down directions to monitor the movement of the piston rod in the up and down directions. The guide component 4 guides the connecting rope 1 to guide the connecting rope 1 to be in the horizontal plane The movement on the connecting rope 1 makes it easier to collect and measure the displacement of the connecting rope 1. The guide component 4 and the wire groove 51 cooperate to enable the connecting rope 1 to be collected or released by the collecting component 5, and the setting of the wire groove 51 and the guide component 4 avoids the connecting rope 1 from stacking on the collecting component 5, thereby ensuring that the displacement of the connecting rope 1 in the up and down directions corresponding to the collection component 5 rotating a certain angle remains unchanged, thereby improving the accuracy of the stroke measurement. At the same time, the stroke measuring device is set in the jack to avoid the jack from adhering to the travel measurement device during long-term operation, thereby improving the stability and accuracy of the jack stroke measurement.

[0053] In some embodiments, the collecting assembly 5 includes a collecting cylinder 52, a transmission shaft 53 and a torsion spring 54. The transmission shaft 53 is arranged in the first cavity 31. The transmission shaft 53 is rotatable relative to the first cavity 31. The collecting cylinder 52 and the torsion spring 54 are sleeved on the transmission shaft 53. A wire groove 51 is provided on the collecting cylinder 52. One end of the torsion spring 54 is connected to the transmission shaft 53, and one end of the torsion spring 54 is connected to the shell 3.

[0054] Specifically, if Figures 1 to 9As shown, the transmission shaft 53 extends in the up and down directions, and the collecting cylinder 52 is sleeved on the transmission shaft 53. When the connecting rope 1 moves upward, the connecting rope 1 drives the collecting cylinder 52 to rotate, and then the collecting cylinder 52 drives the transmission shaft 53 to rotate. The torsion spring 54 is sleeved on the transmission shaft 53 and connected to the transmission shaft 53. The transmission shaft 53 is connected to the torsion spring 54, and the torsion spring 54 is connected to the shell 3, that is, the torsion spring 54 is connected to the inner wall surface of the first cavity 31. The torsion spring 54 makes the transmission shaft 53 always have a tendency to collect the connecting rope 1, and then when the piston rod moves downward, the winding spring drives the collecting cylinder 52 to rotate to collect the connecting rope 1, to avoid the connecting rope 1 being retracted while the collecting cylinder 52 does not rotate, resulting in the connecting rope 1 no longer being tensioned, and then the rotation angle of the transmission shaft 53 can be measured to monitor the rotation angle of the collecting cylinder 52, thereby monitoring the displacement of the connecting rope 1 and the piston rod in the up and down directions.

[0055] The transmission shaft 53 is rotatable relative to the first cavity 31, which can be understood as the transmission shaft 53 rotating on a horizontal plane. The wire groove 51 is provided on the outer peripheral surface of the collecting tube 52. The wire groove 51 is suitable for limiting the connecting rope 1 to avoid stacking of the connecting rope 1 and improve the accuracy of the jack stroke measurement.

[0056] The built-in stroke measuring device jack of the embodiment of the present invention is provided with a collecting cylinder 52, a transmission shaft 53 and a torsion spring 54. The torsion spring 54 keeps the connecting rope 1 taut, and when the piston rod moves downward, that is, when the connecting rope 1 moves downward, the torsion spring 54 is connected to the transmission shaft 53 so that the transmission shaft 53 drives the collecting cylinder 52 to rotate, and then the collecting cylinder 52 rotates to collect the connecting rope 1, so that the connecting rope 1 remains taut when it moves up and down, avoiding the connecting rope 1 losing tension due to the connecting rope 1 moving in the up and down directions while the collecting cylinder 52 and the transmission shaft 53 do not rotate, thereby improving the accuracy of stroke measurement.

[0057] In some embodiments, the guide assembly 4 includes a first guide component 41 and a second guide component 42. The first guide component 41 is arranged at the inlet of the shell 3, and the second guide component 42 is arranged at one end of the first cavity 31 adjacent to the collecting component 5. The rotation direction of the first guide component 41 is orthogonal to the rotation direction of the second guide component 42, and the connecting rope 1 is at least partially in contact with the first guide component 41 and the second guide component 42.

[0058] Specifically, if Figures 1 to 9 As shown, the first guide component 41 is provided at the entrance of the housing 3, or the first guide member is provided at one end of the first cavity 31 adjacent to the entrance of the housing 3. The first guide component 41 includes a first shaft 411 and a first guide wheel 412. The first shaft 411 extends in the front-to-back direction. The first guide wheel 412 is sleeved on the first shaft 411, and the first guide wheel 412 is rotatable on the first shaft 411, that is, the first guide wheel 412 rotates on the plane where the up-down direction and the left-right direction are located.

[0059] The second guide component 42 is arranged at one end of the first cavity 31 adjacent to the collecting assembly 5, that is, the second guide component 42 is arranged at one end of the first cavity 31 adjacent to the collecting cylinder 52, and the position of the second guide component 42 in the up and down direction is lower than the position of the first guide component 41 in the up and down direction, so that the connection between the first guide component 41 and the second guide component 42 gradually descends after being guided, and then smoothly connected to the collecting assembly 5.

[0060] The second guide component 42 includes a second shaft 421 and a second guide wheel 422. The second shaft 421 is arranged in the first cavity 31. The second guide wheel 422 is sleeved on the upper end of the second shaft 421. The second shaft 421 extends in the up and down directions. The second guide wheel 422 is on the second shaft 421. The second guide wheel 422 rotates on the plane where the left and right directions and the front and back directions are located, thereby converting the connection rope 1 from running in the up and down directions to moving in the left and right directions, and the collecting cylinder 52 rotates on the plane where the left and right directions and the front and back directions are located, thereby facilitating the collecting cylinder 52 to collect or release the connecting rope 1.

[0061] The rotation direction of the first guide component 41 is orthogonal to the rotation direction of the second guide component 42, that is, the first guide wheel 412 rotates on the plane where the up and down directions and the left and right directions are located, and the second guide wheel 422 rotates on the plane where the left and right directions and the front and back directions are located. The rotation direction of the first guide wheel 412 is orthogonal to the rotation direction of the second guide wheel 422.

[0062] The built-in stroke measuring device jack of the embodiment of the present invention can convert the movement of the connecting rope 1 in the up and down direction into the left and right direction by setting the first guide component 41 and the second guide component 42, thereby facilitating the collection or release of the connecting rope 1 by the collecting cylinder 52, and the winding of the connecting rope 1 on the collecting component 5 is guided by the wire groove 51, thereby avoiding the connecting rope 1 from being concentratedly wound on a certain area of ​​the collecting cylinder 52, thereby avoiding the occurrence of stacking of the connecting rope 1 on the collecting cylinder 52, and then the connecting rope 1 is wound on the collecting component 5 with the cooperation of the guide component 4 and the collecting component 5, avoiding stacking, and the wire groove 51 on the guide component 4 and the collecting component 5 makes the connecting rope 1 evenly wound on the collecting cylinder 52, and then when monitoring the displacement of the connecting rope 1 and the piston rod of the jack in the up and down direction by monitoring the rotation angle of the transmission shaft 53 and the collecting component 5, the connecting rope 1 will not be stacked and the movement of the connecting rope 1 in the left and right direction will not be interfered with by the collecting cylinder 52, thereby improving the accuracy of stroke measurement.

[0063] In some embodiments, the guide assembly 4 further includes a third guide member 43, and the third guide member 43 has the same rotation direction as the second guide member 42.

[0064] The third guide component 43 includes a third shaft 431 and a third guide wheel 432 . The third guide wheel 432 is sleeved on the third shaft 431 and is rotatable relative to the third shaft 431 .

[0065] Specifically, if Figures 1 to 9 As shown, the third guide member is provided at the lower end of the second guide member 42, and the third guide member 43 is spaced apart from the second guide member 42 in the left-right direction, thereby making the movement of the connecting rope 1 smoother after being guided, and facilitating the connecting rope 1 to be smoothly wound around the wire groove 51 on the outer peripheral surface of the collecting barrel 52 after being guided by the third guide member 43. The volume of the wire groove 51 is larger than that of the connecting rope 1 to guide and limit the connecting rope 1. The connecting rope 1 is at least partially in contact with the third guide member 43, or the connecting rope 1 is at least partially wound around the third guide member 43.

[0066] The third guide component 43 includes a third shaft 431 and a third guide wheel 432. The third shaft 431 extends in the up-down direction. The third shaft 431 is sleeved with the third guide wheel 432. The third guide wheel 432 rotates in the left-right direction and the front-back direction, thereby guiding the connecting rope 1 again, so that the movement of the connecting rope 1 in the left-right direction after the guidance is smoother, thereby making it easier for the connecting rope 1 to be collected into the wire groove 51. The third guide wheel 432 is rotatable relative to the third shaft 431 in the up-down direction. For example, when the connecting rope 1 is gradually wrapped around the third shaft 431 from top to bottom, the third guide wheel 432 moves downward to allow the connecting rope 1 to be collected more smoothly into the wire groove 51 of the collecting cylinder 52. When the connecting rope 1 is gradually released from the collecting cylinder 52 from bottom to top, that is, at this time the piston rod moves upward, and at this time the third guide wheel 432 moves upward, thereby making the release of the connecting rope 1 smoother and preventing the connecting rope 1 from being entangled.

[0067] The built-in stroke measuring device jack of the embodiment of the present invention is provided with a third guide component 43, and the third guide component 43 guides the connecting rope 1 again, so that the movement of the connecting rope 1 in the left and right directions is smoother, and while the third guide wheel 432 rotates to guide the connecting rope 1, the third guide wheel 432 moves in the up and down directions, cooperating with the wire groove 51 on the collecting cylinder 52, so that the connecting rope 1 is smoothly collected into the wire groove 51, avoiding the connecting rope 1 from being irregularly wound on the collecting cylinder 52, and allowing the connecting rope 1 to be wound or released along the up and down directions on the collecting cylinder 52, thereby improving the measurement accuracy of the stroke measuring device.

[0068] In some embodiments, the third guide component 43 further includes a third limiting member 433 . The third limiting member 433 is sleeved on the third shaft 431 to limit the third guide wheel 432 .

[0069] Specifically, if Figures 1 to 9As shown, the third limiter 433 is provided at the lower end of the third shaft 431. The third limiter 433 limits the movement of the third guide wheel 432 in the up and down directions to prevent the third guide wheel 432 from separating from the third shaft 431, thereby improving the stability and safety of the third guide wheel 432 during operation.

[0070] Furthermore, lubricating oil can be applied between the third shaft 431 and the third guide wheel 432, thereby reducing the resistance between the third shaft 431 and the third guide wheel 432, making it easier for the third guide wheel 432 to move in the rotation and up and down directions relative to the third shaft 431, thereby improving the smoothness of the operation of the connecting rope 1.

[0071] Furthermore, the first guide component 41 also includes a first limiter 413, which is arranged at the front end of the first shaft 411, thereby limiting the first guide wheel 412 to prevent the first guide wheel 412 from moving in the front and rear directions, and to prevent the first guide wheel 412 from separating from the first shaft 411 during operation, thereby improving the stability and safety of the first guide wheel 412 during operation.

[0072] Furthermore, the second guide component 42 also includes a second limiter 423, which is arranged at the lower end of the second shaft 421, thereby limiting the second guide wheel 422 to prevent the second guide wheel 422 from moving in the up and down directions, and to prevent the second guide wheel 422 from separating from the second shaft 421 during operation, thereby improving the stability and safety of the second guide wheel 422 during operation.

[0073] Furthermore, the guide assembly 4 also includes a fourth guide component 44, the fourth guide component 44 has the same rotation direction as the second guide component 42, the fourth guide component 44 includes a fourth shaft 441 and a fourth guide wheel 442, the fourth guide wheel 442 is sleeved on the fourth shaft 441, the fourth guide wheel 442 is rotatable relative to the fourth shaft 441, and the fourth guide wheel 442 is movable relative to the fourth shaft 441 in the extension direction of the shell 3.

[0074] The fourth guide member is provided at the lower end of the third guide member 43, and the fourth guide member 44 is spaced apart from the third guide member 43 in the left-right direction, thereby making the movement of the connecting rope 1 smoother after being guided, and facilitating the connecting rope 1 to be smoothly wound around the wire groove 51 on the outer peripheral surface of the collecting barrel 52 after being guided by the fourth guide member 44. The volume of the wire groove 51 is larger than the volume of the connecting rope 1 to guide and limit the connecting rope 1. The connecting rope 1 is at least partially in contact with the third guide member 43, or the connecting rope 1 is at least partially wound around the fourth guide member 44.

[0075] The fourth shaft 441 extends in the up-down direction, and the fourth shaft 441 is sleeved with a fourth guide wheel 442. The fourth guide wheel 442 rotates in the left-right direction and the front-back direction, thereby guiding the connecting rope 1 again, so that the movement of the connecting rope 1 in the left-right direction after the guidance is smoother, thereby making it easier for the connecting rope 1 to be collected into the wire groove 51. The fourth guide wheel 442 is rotatable relative to the fourth shaft 441 in the up-down direction. For example, when the connecting rope 1 is gradually wound around the fourth shaft 441 from top to bottom, the fourth guide wheel 442 moves downward to make the connecting rope 1 more smoothly collected into the wire groove 51 of the collecting tube 52. When the connecting rope 1 is gradually released from the collecting tube 52 from bottom to top, that is, at this time the piston rod moves upward, and at this time the fourth guide wheel 442 moves upward, thereby making the release of the connecting rope 1 smoother, thereby avoiding the winding of the connecting rope 1.

[0076] In other words, the connecting rope 1 contacts the first guide part 41, the second guide part 42, the third guide part 43 and the fourth guide part 44 from top to bottom in sequence, and then the connecting rope 1 is wrapped in the wire groove 51 of the outer circumference of the collecting component 5, thereby making the connecting rope 1 smoother during operation.

[0077] Furthermore, the fourth guide component 44 also includes a fourth limiter, which is arranged at the lower end of the fourth shaft 441, thereby limiting the fourth guide wheel 442 to prevent the fourth guide wheel 442 from moving in the up and down directions, and to prevent the fourth guide wheel 442 from separating from the fourth shaft 441 during operation, thereby improving the stability and safety of the fourth guide wheel 442 during operation.

[0078] Furthermore, the guide component also includes a connecting frame 45, and the first guide component 41, the second guide component, the third guide component and the fourth guide component are all installed on the connecting frame 45, and the connecting frame 45 is fixed in the first cavity 31 of the shell 3, and the first axis 411, the second axis 421, the third axis 431 and the fourth axis 441 are rotatable relative to the connecting frame 45, thereby facilitating the fixing of the first guide component 41, the second guide component, the third guide component and the fourth guide component, thereby improving the stability of the guide assembly 4 during use.

[0079] In some embodiments, the jack with a built-in stroke measuring device further includes a filter element 6, which is provided at the inlet of the housing 3. The filter element 6 has a first hole 61 and a second hole 62. The first hole 61 includes a first section 611, a second section 612, and a third section 613 that are connected in sequence. The end of the first section 611 away from the second section 612 is connected to the accommodating cavity, and the end of the third section 613 away from the second section 612 is connected to the cavity of the first hole 61. The radial dimension of the first section 611 gradually decreases in the direction adjacent to the second section 612.

[0080] One end of the second hole 62 is connected to the end of the first section 611 adjacent to the second section 612, and the other end of the second hole 62 is connected to the accommodating cavity. The height of the second hole 62 in the vertical direction gradually decreases as it moves away from the first hole 61.

[0081] Specifically, if Figures 1 to 9 As shown, the filter element 6 is arranged at the inlet of the shell 3, and the filter element 6 has a first hole 61 extending in the up-down direction, and the second hole 62 is connected to the first hole 61, and the connecting rope 1 passes through the first hole 61 and enters the first cavity 31, the upper end of the first section 611 is connected to the accommodating cavity, the lower end of the first section 611 is connected to the upper end of the second section 612, the lower end of the second section 612 is connected to the upper end of the third section 613, and the lower end of the third section 613 is connected to the first cavity 31, the radial dimension of the first section 611 gradually decreases from top to bottom, and the radial dimension of the lowest end of the first section 611 is slightly larger than the radial dimension of the connecting rope 1, thereby facilitating the removal of impurities attached to the connecting rope 1, and the impurities are gathered at the lower end of the first section 611, the second hole 62 is connected to the lower end of the first section 611 to discharge the impurities into the second hole 62, and the second hole 62 is also connected to the accommodating cavity to discharge the impurities from the second hole 62.

[0082] This prevents dust or oily mud from adhering to the connecting rope 1, thereby improving the measurement accuracy of the stroke measuring device.

[0083] Furthermore, the shell 3 may be further provided with a third hole 32 , the inlet of the third hole 32 is communicated with the second hole 62 , and the third hole 32 is communicated with the accommodating cavity, thereby discharging impurities into the accommodating cavity.

[0084] In some embodiments, the jack with a built-in stroke measuring device further includes a transmission component 55 and an angle measuring component 56 . One end of the transmission component 55 is connected to the transmission shaft 53 , and the angle measuring component 56 is connected to the transmission component 55 to monitor the rotation angle of the transmission component 55 .

[0085] Specifically, if Figures 1 to 9 As shown, the transmission component 55 is connected to the lower end of the transmission shaft 53, and the lower end of the transmission component 55 is connected to the angle measuring component 56. The transmission component 55 is also connected to the angle measuring component 56. The angle measuring component 56 monitors the rotation of the transmission component 55 to monitor the rotation of the transmission shaft 53, and then monitors the rotation of the collection component 5, thereby measuring the displacement of the connecting rope 1 in the up and down directions.

[0086] It is understood that the angle measuring component 56 may be an existing electromagnetic sensor. The transmission component 55 may be a plurality of gear sets meshing with each other, thereby amplifying the rotation speed of the transmission shaft 53 and improving the accuracy of the angle measurement.

[0087] The jack with a built-in stroke measuring device in an embodiment of the present invention arranges the angle measuring component 56 and the transmission component 55 in the shell 3, and the stroke measuring device is arranged in the accommodating cavity. The built-in stroke measuring device can avoid collision between the stroke measuring device and the angle monitoring component during use, and avoid the influence of dust and oil mud on the angle measuring component 56, thereby improving the measurement accuracy and stability.

[0088] In some embodiments, the jack with a built-in stroke measuring device further includes a connector 7 and a piston rod, wherein the connector 7 is connected to one end of the connecting rope 1 away from the collecting assembly 5, and the other end of the connector 7 is threadedly connected to the piston rod.

[0089] Specifically, if Figures 1 to 9 As shown, one end of the connecting member 7 is connected to the connecting rope 1, and the upper end of the outer peripheral surface of the connecting member 7 is provided with a thread that is threadedly connected to the piston rod. The radial dimension of the connecting member 7 is larger than the radial dimension of the first hole 61, and the upper end of the connecting member 7 is threadedly connected to the piston rod to facilitate personnel to install the connection between the connecting member 7 and the piston rod.

[0090] Furthermore, the jack with built-in stroke measuring device further comprises a plurality of mounting connection seats 12, which are arranged at intervals in the circumferential direction of the upper end surface of the shell 3, and the shape of the mounting connection seats 12 is U-shaped steel.

[0091] The operator uses the installation fixture 9 and the installation screw 8 to install the stroke measuring device into the jack cylinder 2.

[0092] The mounting and connecting fixture 9 consists of a gripper base 91, a reinforcing rib plate 92, and a connector 93. The gripper base 91, the reinforcing rib plate 92, and the connector 93 are welded to each other. The gripper base 91 has three slotted teeth 911 evenly distributed along its circumference, which can be docked with the mounting and connecting seat 12. A slit is provided at the center of the base plate, allowing the connecting nut and the wire rope to pass through the slit and be clamped in the center of the gripper base 91. One side of the connector 93 is welded to the gripper base 91, and the other side is drilled with a threaded hole for threaded connection with the mounting screw 8. There are three reinforcing rib plates 92, evenly distributed along the circumference of the connector 93. The gripper base 91 and the connector 93 are fixed together by welding, increasing the strength of the mounting and connecting fixture 9.

[0093] The mounting screw 8 can be connected to the mounting connection fixture 9 by a thread. The length of the mounting screw 8 depends on the length of the jack. The mounting screw 8 and the mounting connection fixture 9 can realize the portable disassembly and assembly of the stroke measuring device inside the jack. The mounting screw 8 is threadedly connected to the connector 93.

[0094] In some embodiments, the jack with a built-in stroke measuring device further includes a filter screen, a guide hole is provided on the jack cylinder 2, and a filter screen is provided in the guide hole.

[0095] Specifically, if Figures 1 to 9 As shown, since gas exchange is inevitable during the use of the jack, a guide hole is provided on the jack cylinder 2, and a filter is provided in the guide hole to filter dust and solid particles to prevent dust and foreign particles from entering the jack, and balance the pressure inside and outside the jack, thereby preventing dust and sludge from accumulating on the connecting rope 1 and the stroke measuring device, thereby improving the accuracy of the jack stroke measurement.

[0096] An electrical plug 11 is installed on the jack cylinder 2 and is connected to the stroke measuring device for data transmission.

[0097] The method for installing a jack with a built-in stroke measuring device according to an embodiment of the present invention includes:

[0098] Assemble the stroke measuring device and the installation and connection fixture 9, clamp the connecting piece 7 on the installation and connection fixture 9, connect the installation screw 8 to the installation and connection fixture 9, place the stroke measuring device in the accommodating cavity of the jack cylinder 2, install the stroke measuring device in the final position by tapping the installation screw 8, and install the set screw to fix the stroke measuring device;

[0099] Separate the installation and connection fixture 9 from the housing 3, pull the connector 7 and the connecting rope 1 out of the jack cylinder 2, separate the connector 7 from the installation and connection fixture 9, and connect the connector 7 to the piston rod;

[0100] Install the guide sleeve and the retractable piston rod on the jack cylinder 2, install the electrical plug 11, and connect the electrical plug 11 to the stroke measuring device.

[0101] Specifically, if Figures 1 to 9 As shown, assemble the stroke measuring device and the installation and connection fixture 9, thread the installation screw 8 to the installation and connection fixture 9, and evenly distribute three slotting teeth 911 on the gripping plate base 91 of the installation and connection fixture 9 along the circumference, which can be docked with the installation and connection seat 12, thereby connecting the stroke measuring device, and clamping the connecting piece 7 on the installation and connection fixture 9, and gradually placing the stroke measuring device in the accommodating cavity of the jack cylinder 2 from top to bottom. By tapping the installation screw 8, the stroke measuring device is installed in the final position, and the set screw is installed to fix the stroke measuring device; the set screw is installed on the jack cylinder 2 to fix the stroke measuring device in the jack cylinder 2.

[0102] Separate the installation and connection fixture 9 from the housing 3, pull the connector 7 and the connecting rope 1 out of the jack cylinder 2, separate the connector 7 from the installation and connection fixture 9, and connect the connector 7 to the piston rod;

[0103] Install the guide sleeve and the retractable piston rod on the jack cylinder 2, install the electrical plug 11, and connect the electrical plug 11 to the stroke measuring device.

[0104] The set screw is installed on the jack cylinder 2 to fix the stroke measuring device in the jack cylinder 2. After fixing the stroke measuring device, rotate the mounting screw 8 to separate the mounting connection fixture 9 from the mounting connection seat 12 of the shell 3, take the mounting connection fixture 9 out of the jack cylinder 2, install the guide sleeve and the retractable piston rod on the jack cylinder 2, install the electrical plug 11, and connect the electrical plug 11 to the stroke measuring device.

[0105] The method for installing a jack with a built-in stroke measuring device according to an embodiment of the present invention installs the stroke measuring device inside the jack, thereby preventing the stroke measuring device from being interfered with by objects during measurement and improving measurement accuracy.

[0106] 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", "axial", "radial", "circumferential" and the like to 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0107] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0108] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0109] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature. In the present invention, the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and integrate the different embodiments or examples, and features of different embodiments or examples, described in this specification, without conflict. Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A jack with a built-in stroke measuring device, characterized in that: include: A jack cylinder, wherein the jack cylinder has a receiving cavity; A stroke measuring device and a connecting rope, wherein the stroke measuring device is arranged in the accommodating cavity and comprises a housing, a guide assembly and a collecting assembly. The housing has a first cavity, the housing has an inlet, the collecting assembly and the guide assembly are disposed in the first cavity, and the collecting assembly is rotatable relative to the first cavity, the connecting rope passes through the housing inlet and extends into the first cavity, the connecting rope is at least partially wound around the guide assembly, one end of the connecting rope is connected to the collecting assembly, and the collecting assembly is provided with a wire groove spirally arranged along an extension direction of the housing to accommodate the connecting rope; It also includes a connecting piece and a piston rod, wherein one end of the connecting piece is connected to the end of the connecting rope away from the collecting assembly, and the other end of the connecting piece is threadedly connected to the piston rod; A method for installing a jack with a built-in stroke measuring device includes: Assemble the stroke measuring device and the installation and connection fixture, clamp the connector on the installation and connection fixture, connect the installation screw to the installation and connection fixture, place the stroke measuring device in the jack cylinder housing, install the stroke measuring device in the final position by tapping the installation screw, and install the set screw to secure the stroke measuring device; Separate the installation and connection fixture from the housing, pull the connector and the connecting rope out of the jack cylinder, separate the connector from the installation and connection fixture, and connect the connector to the piston rod; Install the guide sleeve and the retractable piston rod on the jack cylinder, install the electrical plug, and connect the electrical plug to the stroke measuring device.

2. The jack with built-in stroke measuring device according to claim 1, characterized in that: The collecting assembly includes a collecting cylinder, a transmission shaft and a torsion spring. The transmission shaft is arranged in the first cavity and is rotatable relative to the first cavity. The collecting cylinder and the torsion spring are sleeved on the transmission shaft. The collecting cylinder is provided with the wire groove. One end of the torsion spring is connected to the transmission shaft, and one end of the torsion spring is connected to the shell.

3. The jack with built-in stroke measuring device according to claim 2, characterized in that: The guide assembly includes a first guide component and a second guide component, the first guide component is arranged at the inlet of the shell, and the second guide component is arranged at one end of the first cavity adjacent to the collecting component, and the rotation direction of the first guide component is orthogonal to the rotation direction of the second guide component, and the connecting rope is at least partially in contact with the first guide component and the second guide component.

4. The jack with a built-in stroke measuring device according to claim 3, characterized in that: The guide assembly further includes a third guide component, and the third guide component has the same rotation direction as the second guide component. The third guide component includes a third shaft and a third guide wheel. The third guide wheel is sleeved on the third shaft and is rotatable relative to the third shaft.

5. The jack with a built-in stroke measuring device according to claim 4, characterized in that: The third guide component further includes a third limiting member, and the third limiting member is sleeved on the third shaft to limit the third guide wheel.

6. The jack with a built-in stroke measuring device according to claim 3, characterized in that: The invention also includes a filter element, which is arranged at the inlet of the housing, and has a first hole and a second hole. The first hole includes a first section, a second section, and a third section that are connected in sequence. An end of the first section away from the second section is connected to the accommodating cavity, and an end of the third section away from the second section is connected to the first cavity. The radial size of the first section gradually decreases in the direction adjacent to the second section. One end of the second hole is communicated with an end of the first section adjacent to the second section, and the other end of the second hole is communicated with the accommodating cavity.

7. The jack with a built-in stroke measuring device according to claim 3, characterized in that: The collection component further includes a transmission component and an angle measuring component. One end of the transmission component is connected to the transmission shaft, and the angle measuring component is connected to the transmission component to monitor the rotation angle of the transmission component.

8. The jack with a built-in stroke measuring device according to any one of claims 1 to 7, characterized in that: It also includes a filter screen. A guide hole is provided on the jack cylinder, and a filter screen is provided in the guide hole.

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