Front traction mechanism of rock drilling rig thruster

Abstract

A front traction mechanism for a rock drilling trolley thruster includes a front wire rope I, a front pulley assembly and a tensioning device I; the rear end of the front wire rope I is mounted on the tensioning device I, and the front end of the front wire rope I is mounted on the front fixed shaft of the rock drilling machine mounting seat; the tensioning device I is provided with a plurality of positions at intervals, and the rear end components of the front wire rope I are placed in different positions of the tensioning device I, so as to achieve rear end limit. The present invention realizes effective tensioning of the thruster wire rope, and can greatly reduce the difficulty of replacing the wire rope and improve the replacement efficiency.

Description

Technical Field

[0001] The invention relates to a traction mechanism, in particular to a front traction mechanism of a rock drilling trolley thruster. Background Art

[0002] The front end wire rope in the front traction mechanism of the existing rock drilling trolley thruster is composed of a front end hinged head, a wire rope body, and a rear hinged head, wherein the front hinged head is connected to the front fixed shaft on the rock drilling machine mounting seat; the rear hinged head is hinged to the tensioning device through a pin shaft, wherein the pin shaft passes through the positioning hole on the tensioning device and is limited by a cotter pin; the wire rope body passes through the tensioning device, and the tensioning device has multiple rows of positioning holes; the adjustment of the tightness of the front traction mechanism is divided into large adjustment and small adjustment, the large adjustment is to install the rear hinged head corresponding to the positioning holes in different positions; the small adjustment is to adjust the position of the tensioning device as a whole while ensuring that the relative position of the rear end hinged head and the tensioning device remains unchanged.

[0003] During the advancement process, the front wire rope is an active wire rope, which has tension inside it all the time and is always in a tensioned state. During the retraction process, the rear wire rope is an active wire rope, which has tension inside it all the time and is always in a tensioned state. During this process, the front wire rope is a passive wire rope, which has basically no tension inside and is in a relaxed state. In this state, the wire rope body often slips out of the groove of the pulley and gets stuck in the gap between the support plate and the pulley, which can easily cause the wire rope body to be squeezed and broken. If the front wire rope is tensioned when it is in a relaxed state, the front wire rope will be over-tensioned during the advancement process and will be easily broken.

[0004] At the same time, since the tensioning device is located inside the thruster and below the thrust cylinder, the space is extremely narrow, which makes it very difficult to pull out the pins and align the holes during the replacement of the front-end wire rope, resulting in very low efficiency in replacing the front-end wire rope. Summary of the invention

[0005] In view of the defects in the prior art, the present invention proposes a front traction mechanism for a rock drilling trolley thruster.

[0006] The present invention is implemented according to the following technical solutions:

[0007] The front traction mechanism of the rock drilling trolley thruster includes a front-end steel wire rope I, a front-end pulley assembly and a tensioning device I; the rear end of the front-end steel wire rope I is installed on the tensioning device I, and the front end of the front-end steel wire rope I is installed on the front fixed shaft of the rock drilling machine mounting seat; a plurality of clamping positions are arranged in the tensioning device I, and the rear end components of the front-end steel wire rope I are placed in different clamping positions of the tensioning device I to achieve rear end limitation.

[0008] Furthermore, the front-end steel wire rope I includes a rear-end component, a steel wire rope body and a front-end component; the rear-end component adopts a rear-end fixing block and is fixedly connected to one end of the steel wire rope body. After the steel wire rope body passes around the front-end pulley assembly, the rear-end fixing block is placed into the clamping position.

[0009] Furthermore, the clamping position includes a lower baffle, a front baffle and two upper baffles; the front baffle is a U-shaped plate, the front baffle is fixed in the tensioning device I, the lower baffle is fixed to the bottom surface of the tensioning device I, and the two upper baffles are correspondingly fixed to the top surface of the tensioning device I, and a gap is left between the two upper baffles, and the width of the gap is greater than the diameter of the wire rope body and less than the width of the rear end fixing block.

[0010] Furthermore, the front end component includes a front end fixing body, a front end threaded section, a positioning nut and a thrust spring;

[0011] The front end threaded section is fixedly connected to the other end of the wire rope body, the front end threaded section is arranged in the front end fixed body, the thrust spring is sleeved in the front end threaded section, the positioning nut is engaged with the front end threaded section and contacts with the thrust spring; the thrust spring of the front end wire rope I will contact the front baffle of the fixed body when the front end wire rope I is subjected to force.

[0012] Furthermore, the front end fixed body includes a pin shaft hole, a fixed body front baffle, two fixed body upper baffles, a fixed body lower baffle and two fixed body side plates; the pin shaft hole is installed on the front fixed shaft on the rock drill mounting seat, the two fixed body side plates are correspondingly installed on the side of the pin shaft hole, the fixed body lower baffle is fixed on the bottom surface of the two fixed body side plates, the fixed body front baffle is a U-shaped plate, the fixed body front baffle is fixed in the two fixed body side plates, the two fixed body upper baffles are correspondingly fixed on the top surface of the two fixed body side plates, and a gap is left between the baffles on the two fixed plates.

[0013] Furthermore, the front end pulley assembly includes a support plate and a pulley; the pulley is installed in the support plate, and the support plate is connected to the propulsion cylinder.

[0014] Beneficial effects of the present invention:

[0015] 1. Previously, the traction mechanism could ensure that the front wire rope I was always in a tensioned state during the advancement and retraction process, which could prevent the wire rope body from escaping from the pulley, thereby greatly reducing the risk of the wire rope body being squeezed and broken.

[0016] 2. Previously, when the traction mechanism was replaced after the front wire rope I was damaged, the steps of wearing the pin shaft and the cotter pin were omitted, which greatly reduced the replacement time and had obvious advantages during tunnel face construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 For the existing traction mechanism structure Figure 1;

[0018] Figure 2 For the existing traction mechanism structure Figure 2 ;

[0019] Figure 3 For the existing traction mechanism structure Figure 3 ;

[0020] Figure 4 For the existing traction mechanism Figure 1 ;

[0021] Figure 5 For the existing traction mechanism Figure 2 ;

[0022] Figure 6 This is a structural diagram of the existing front end pulley assembly;

[0023] Figure 7 For the existing front traction mechanism structure Figure 1 ;

[0024] Figure 8 For the existing front traction mechanism structure Figure 2 ;

[0025] Fig. 9 The structural diagram of the existing rock drill mounting base;

[0026] Fig.10 It is a partial schematic diagram of the rear end of the front traction mechanism of the rock drilling trolley thruster of the present invention;

[0027] Fig.11 It is a partial schematic diagram of the front end of the front traction mechanism of the rock drilling trolley thruster of the present invention;

[0028] Fig.12 The rear end tensioning device of the front traction mechanism of the rock drilling trolley thruster of the present invention is schematically shown. Figure 1 ;

[0029] Fig.13 The rear end tensioning device of the front traction mechanism of the rock drilling trolley thruster of the present invention is schematically shown. Figure 2 ;

[0030] Fig.14 It is a schematic diagram of the rear end of the wire rope of the front traction mechanism of the rock drilling trolley thruster of the present invention;

[0031] Fig.15 It is a schematic diagram of the front end of the steel wire rope of the front traction mechanism of the rock drilling trolley thruster of the present invention;

[0032] Fig.16 It is a schematic diagram of the front end fixing body of the front traction mechanism of the rock drilling trolley thruster of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the implementation of the present invention clearer, the technical scheme in the embodiment of the present invention will be described in more detail below in conjunction with the drawings in the embodiment of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The embodiments of the present invention are described in detail below in conjunction with the drawings.

[0034] like Figures 1 to 5 As shown, the movement of the rock drill 4 on the rock drilling trolley thruster is completed by the cooperation of the thrust cylinder 3 and the front traction mechanism and the rear traction mechanism; the front traction mechanism is composed of a front end wire rope II1, a front end pulley assembly 8, and a tensioning device II10, and the front end pulley assembly 8 includes a support plate 81 and a pulley 82; the rear traction mechanism is composed of a rear end wire rope 2, a reel 6, and an oil pipe bracket 9. The rock drill 4 is fixed on the rock drill mounting seat 5; the piston rod 31 of the propulsion cylinder 3 is relatively fixed to the propeller, the cylinder barrel 32 can move forward and backward, and the cylinder barrel 32 is relatively fixed to the reel mounting seat 7, and the cylinder barrel 32 is relatively fixed to the front pulley assembly 8; the reel 6 is relatively fixed to the reel mounting seat 7, and can rotate on the reel mounting seat 7; the rear end of the front wire rope Ⅱ1 is relatively fixed to the tail of the propeller, the front end of the front wire rope Ⅱ1 is relatively fixed to the rock drill mounting seat 5, and the front end wire rope Ⅱ1 passes around the front pulley assembly 8; the front end of the rear end wire rope 2 is fixed to the oil pipe bracket 9, the rear end of the rear end wire rope 2 is fixed to the rock drill mounting seat 5, and the rear end wire rope 2 passes around the reel 6.

[0035] The propulsion process is as follows: the propulsion cylinder 3 extends, driving the front pulley assembly 8 and the reel mounting seat 7 to move forward; since the rear end of the front wire rope Ⅱ1 is fixed, during the forward movement of the front pulley assembly 8, the front wire rope Ⅱ1 pulls the rock drill mounting seat 5 forward, and the rock drill 4 moves forward accordingly; the reel 6 moves forward along with the reel mounting seat 7, and the rear end wire rope 2 moves along with the rock drill mounting seat 5.

[0036] The retraction process is as follows: the propulsion cylinder 3 retracts, driving the reel mounting seat 7 to move backward, and then driving the reel 6 to move backward; the reel 6 acts on the rear end wire rope 2. Since the front end of the rear end wire rope 2 is fixed to the oil pipe support 9, under the drive of the reel 6, the rear end wire rope 2 drives the rock drill mounting seat 5 to move backward, and then drives the rock drill 4 to move backward.

[0037] like Figures 7 to 9As shown, the front end steel wire rope Ⅱ1 in the front traction mechanism of the existing rock drilling trolley thruster is composed of a front end hinged head 101, a steel wire rope body 102, and a rear hinged head 103, wherein the front hinged head 101 is connected to the front fixed shaft 51 on the rock drilling machine mounting seat 5; the rear hinged head 103 is hinged to the tensioning device Ⅱ10 through a pin shaft 11, wherein the pin shaft 11 passes through the positioning hole 1002 on the tensioning device Ⅱ10, and is limited by a cotter pin 12; the steel wire rope body 102 passes through the tensioning device 10, and the tensioning device Ⅱ10 has multiple rows of positioning holes 1002; the adjustment of the tightness of the front traction mechanism is divided into large adjustment and small adjustment, the large adjustment is to install the rear hinged head 103 corresponding to the positioning holes 1002 at different positions; the small adjustment is to adjust the position of the tensioning device Ⅱ10 as a whole while ensuring that the relative position of the rear end hinged head 103 and the tensioning device 10 remains unchanged.

[0038] During the advancement process, the front wire rope II1 is an active wire rope, which has tension inside it all the time and is always in a tensioned state. During the retraction process, the rear wire rope 2 is an active wire rope, which has tension inside it all the time and is always in a tensioned state. During this process, the front wire rope II1 is a passive wire rope, which has basically no tension inside and is in a relaxed state. In this state, the wire rope body 102 often escapes from the groove of the pulley 82 and gets stuck in the gap between the support plate 81 and the pulley 82, which can easily cause the wire rope body 2 to be squeezed and broken. If the front wire rope 1 is tensioned when it is in a relaxed state, the front wire rope 1 will be over-tensioned during the advancement process and will be easily broken.

[0039] At the same time, since the tensioning device Ⅱ10 is located inside the thruster and below the thrust cylinder 3, the space is extremely narrow, which makes it very difficult to pull out the pin and align the hole during the replacement of the front wire rope Ⅱ1, resulting in a very low replacement efficiency of the front wire rope 1.

[0040] In view of the defects of the prior art, the present invention proposes a front traction mechanism for the thruster of a rock drilling trolley. The specific scheme is as follows:

[0041] like Figures 1 to 16 As shown, the front traction mechanism of the rock drilling trolley thruster includes a front end steel wire rope Ⅰ13, a front end pulley assembly 8 and a tensioning device Ⅰ14; the rear end of the front end steel wire rope Ⅰ13 is installed on the tensioning device Ⅰ14, and the front end of the front end steel wire rope Ⅰ13 is installed on the front fixed shaft 51 of the rock drilling machine mounting seat 5; a plurality of clamping positions are arranged in the tensioning device Ⅰ14, and the rear end components of the front end steel wire rope Ⅰ13 are placed in different clamping positions of the tensioning device Ⅰ14, so as to realize the rear end limit.

[0042] like Fig.14As shown, the front end wire rope Ⅰ13 includes a rear end component, a wire rope body 131 and a front end component; the rear end component adopts a rear end fixing block 132 and is fixedly connected to one end of the wire rope body 131. After the wire rope body 131 passes around the front end pulley assembly 8, the rear end fixing block 132 is placed into the position.

[0043] like Fig.12 , Fig.13 As shown, the positioning includes a lower baffle 141, a front baffle 142 and two upper baffles 143; the front baffle 142 is a U-shaped plate, the front baffle 12 is fixed in the tensioning device Ⅰ14, the lower baffle 141 is fixed to the bottom surface of the tensioning device Ⅰ14, and the two upper baffles 143 are correspondingly fixed to the top surface of the tensioning device Ⅰ14, and a gap is left between the two upper baffles 143, and the width of the gap is greater than the diameter of the wire rope body 131 and less than the width of the rear end fixing block 132.

[0044] like Fig.15 As shown, the front end components include a front end fixed body 133, a front end threaded segment 134, a positioning nut 136 and a thrust spring 135; the front end threaded segment 134 is fixedly connected to the other end of the wire rope body 131, the front end threaded segment 134 is arranged in the front end fixed body 133, the thrust spring 135 is sleeved in the front end threaded segment 134, the positioning nut 136 is engaged with the front end threaded segment 134, and is in contact with the thrust spring 135; the thrust spring 135 of the front end wire rope Ⅰ13 will contact the fixed body front baffle 1332 when the front end wire rope Ⅰ13 is subjected to force.

[0045] like Fig.16 As shown, the front end fixed body 133 includes a pin hole 1331, a fixed body front baffle 1332, two fixed body upper baffles 1333, a fixed body lower baffle 1334 and two fixed body side plates; the pin hole 1331 is installed on the front fixed shaft 51 on the rock drill mounting base 5, the two fixed body side plates are correspondingly installed on the side of the pin hole 1331, the fixed body lower baffle 1334 is fixed on the bottom surfaces of the two fixed body side plates, the fixed body front baffle 1332 is a U-shaped plate, the fixed body front baffle 1332 is fixed in the two fixed body side plates, the two fixed body upper baffles 1333 are correspondingly fixed on the top surfaces of the two fixed body side plates, and a gap is left between the baffles 1333 on the two fixed plates.

[0046] like Figure 6 , Fig.11 As shown, the front end pulley assembly 8 includes a support plate 81 and a pulley 82 ; the pulley 82 is installed in the support plate 81 , and the support plate 81 is connected to the propulsion cylinder 3 .

[0047] The front end of the front wire rope Ⅰ13 is mounted on the front fixed shaft 51 of the rock drill mounting seat 5, and the rear end of the front wire rope Ⅰ13 is mounted on the tensioning device Ⅰ14, and the wire rope body 131 passes around the groove of the pulley 81. The adjustment of the tightness of the front traction mechanism is divided into large adjustment and small adjustment. The large adjustment is to put the rear end fixing block 132 of the new front wire rope 13 into different positions of the new tensioning device 14, and the lower baffle 141, the front baffle 142, and the upper baffle 143 of each position limit the rear end when the front wire rope Ⅰ13 is stressed; the small adjustment is to adjust the position of the tensioning device Ⅰ14 as a whole while ensuring that the relative position of the rear end fixing block 132 and the tensioning device Ⅰ14 remains unchanged. The positioning nut 136 is engaged with the front thread 134 and contacts the thrust spring 135. The front end thrust spring 135 of the front wire rope Ⅰ13 will contact the fixed body front baffle 1332 when the front wire rope Ⅰ13 is stressed.

[0048] After the propeller front traction mechanism is installed, the entire new front traction mechanism is tensioned according to normal tensioning steps and strength. After the tensioning is completed, the thrust spring 135 is in a compressed state.

[0049] Previously, the traction mechanism could ensure that the front wire rope I was always in a tensioned state during the advancement and retraction process, which could prevent the wire rope body from escaping from the pulley, thereby greatly reducing the risk of the wire rope body being squeezed and broken.

[0050] Previously, when the traction mechanism was replaced after the front wire rope I was damaged, the steps of threading the pin shaft and the cotter pin were omitted, which greatly reduced the replacement time and had obvious advantages during tunnel face construction.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. The front traction mechanism of the rock drilling trolley thruster is characterized by: It includes a front-end steel wire rope Ⅰ, a front-end pulley assembly and a tensioning device Ⅰ; The rear end of the front-end steel wire rope I is installed on the tensioning device I, and the front end of the front-end steel wire rope I is installed on the front fixed shaft of the rock drill mounting seat; The tensioning device I is provided with a plurality of positions at intervals, and the rear end components of the front end steel wire rope I are placed into different positions of the tensioning device I, so as to achieve rear end limit; The front end steel wire rope I comprises a rear end component, a steel wire rope body and a front end component; The rear end component adopts a rear end fixing block, and is fixedly connected to one end of the wire rope body. After the wire rope body passes around the front end pulley assembly, the rear end fixing block is put into the clamping position; The clamping position includes a clamping position lower baffle, a clamping position front baffle and two clamping position upper baffles; The front baffle is a U-shaped plate, which is fixed in the tensioning device I, the lower baffle is fixed to the bottom surface of the tensioning device I, and the two upper baffles are correspondingly fixed to the top surface of the tensioning device I, and a gap is left between the two upper baffles, the width of which is greater than the diameter of the wire rope body and less than the width of the rear end fixing block; The front end component includes a front end fixing body, a front end threaded section, a positioning nut and a thrust spring; The front threaded section is fixedly connected to the other end of the wire rope body, the front threaded section is arranged in the front fixed body, the thrust spring is sleeved in the front threaded section, the positioning nut is meshed with the front threaded section and in contact with the thrust spring; The thrust spring of the front end steel wire rope I will contact the front baffle of the fixed body when the front end steel wire rope I is stressed; The front end fixed body comprises a pin shaft hole, a fixed body front baffle plate, two fixed body upper baffle plates, a fixed body lower baffle plate and two fixed body side plates; The pin shaft hole is installed on the front fixed shaft on the rock drill mounting seat, and the two fixed body side plates are correspondingly installed on the side faces of the pin shaft hole. The fixed body lower baffle is fixed on the bottom surfaces of the two fixed body side plates. The fixed body front baffle is a U-shaped plate, and the fixed body front baffle is fixed in the two fixed body side plates. The two fixed body upper baffles are correspondingly fixed on the top surfaces of the two fixed body side plates, and a gap is left between the baffles on the two fixed plates.

2. The front traction mechanism of the rock drilling trolley thruster according to claim 1, characterized in that: The front end pulley assembly comprises a support plate and a pulley; the pulley is installed in the support plate, and the support plate is connected to the propulsion cylinder.

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