Locking device of pull rod shaft

Abstract

The utility model provides a locking device of a pull rod shaft, and belongs to the technical field of pull rod shafts. The locking device of the pull rod shaft comprises a main body and a shaft rod mechanism, the shaft rod mechanism comprises a pull rod shaft body and two sets of sliding grooves, fixing blocks are installed at the two ends of the pull rod shaft body in a sliding mode, the number of the two sets of sliding grooves is four, and the two sets of sliding grooves are formed in the outer sides of the pair of fixing blocks correspondingly; the main body comprises a door frame, a door plate is slidably inserted into the door frame, a pair of lifting lugs is fixedly mounted at the upper end of the door plate, inserting grooves are formed in the centers of the lifting lugs, annular grooves are formed in the inserting grooves, and the clamping blocks are slidably mounted in the annular grooves; the pair of fixing blocks are connected with the pair of inserting grooves in an inserted mode respectively, the two sets of clamping blocks are connected with the pair of annular grooves in a clamped mode respectively, the practicability of the locking device of the pull rod shaft can be effectively improved, and the locking device of the pull rod shaft has high practical value.

Description

Technical Field

[0001] The utility model relates to the technical field of drawbar shafts, and more particularly to a locking device for a drawbar shaft. Background Art

[0002] A gate is a control facility used to close and open a water discharge channel and is an important part of a hydraulic structure. It can be used to intercept water flow, control water level, regulate flow rate, discharge sediment and floating objects, etc.

[0003] For example, a Chinese patent with the publication number CN218909557U discloses a locking device for a drawbar shaft, which includes two groups of lifting lugs arranged on a gate, and also includes a shaft rod for simultaneously passing through the two groups of lifting lugs. Insertion holes for the shaft rod to pass through are provided on both groups of lifting lugs, and an annular groove is provided on the peripheral wall of the shaft rod for the lifting lugs to be inserted into. The locking device for a drawbar shaft provided in this application restricts the movement of the shaft rod by providing an annular groove on the side wall of the shaft rod and using the insertion fit between the annular groove and the lifting lugs, effectively preventing the shaft rod from falling off the lifting lugs and facilitating the installation and fixation of the shaft rod;

[0004] In the technical solution described in this scheme, only a limiting piece connected by a torsion spring is used to close one side of the accommodating groove, resulting in a risk that the shaft rod still falls off between the lifting lugs, greatly reducing the locking effect of the drawbar shaft.

[0005] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a locking device for a drawbar shaft is provided with the expectation of achieving a more practical value. Summary of the Utility Model

[0006] In order to solve the above technical problems, an embodiment of the utility model provides a locking device for a drawbar shaft, which is specifically realized through the following technical solutions:

[0007] A locking device for a drawbar shaft includes a main body and a shaft rod mechanism. The shaft rod mechanism includes a drawbar shaft body and two groups of chutes. Fixed blocks are slidably installed at both ends of the drawbar shaft body. Each of the two groups of chutes is provided with four, and the two groups of chutes are respectively arranged outside a pair of fixed blocks. Blocks are slidably installed inside the two groups of chutes. The main body includes a door frame, and a door panel is slidably inserted inside the door frame. A pair of lifting lugs are fixedly installed at the upper end of the door panel. Slots are provided at the centers of the lifting lugs, and annular grooves are provided inside the slots. A pair of fixed blocks are respectively inserted into a pair of slots, and two groups of blocks are respectively clamped with a pair of annular grooves.

[0008] Furthermore, limiting blocks are installed at both ends inside the drawbar shaft body, springs are installed outside the limiting blocks, and the other ends of a pair of springs are respectively connected to one end of a pair of fixed blocks.

[0009] The beneficial effect of adopting the above further solution is that by installing a spring, the fixing block can be pushed out by its elastic force, which is convenient for installing the pull rod shaft body.

[0010] Further, sleeves are rotatably connected to one side of the inner part of the fixing block, a screw rod is threadedly connected to one end of the sleeve, and four first mounting seats are installed on the outer side of one end of the screw rod.

[0011] The beneficial effect of adopting the above further solution is that by threadedly connecting the screw rod to one end of the sleeve, when the sleeve rotates, the limiting screw rod can perform linear motion.

[0012] Further, second mounting seats are installed on the inner sides of the clamping blocks, and connecting rods are hinged between the first mounting seats and the second mounting seats through pin shafts.

[0013] The beneficial effect of adopting the above further solution is that by hinging the connecting rod between the first mounting seat and the second mounting seat, when the screw rod moves, the clamping block connected in a sliding manner can be pushed to move by the connecting rod, so as to be clamped into the inner part of the annular groove.

[0014] Further, cage holders are installed inside the pull rod shaft body on the inner sides of the limiting blocks, and a worm gear is rotatably connected to one side of the cage holder.

[0015] The beneficial effect of adopting the above further solution is that by installing a limiting frame and rotatably connecting the worm gear to one side thereof, it is convenient for the worm gear to rotate.

[0016] Further, a clamping groove is formed at the center of the worm gear, and transmission grooves are installed on both sides of the clamping groove.

[0017] The beneficial effect of adopting the above further solution is that by providing the clamping groove and the transmission groove, it is convenient for the connecting rod to be inserted into the clamping groove and drive the worm gear to rotate.

[0018] Further, a connecting rod is sleeved on one end of the sleeve, and the connecting rod is slidably inserted into the clamping groove.

[0019] The beneficial effect of adopting the above further solution is that by slidably inserting the connecting rod into the clamping groove, the connecting rod can slide inside it.

[0020] Further, transmission blocks are installed on both sides of the connecting rod, and the transmission blocks are clamped with the transmission grooves.

[0021] The beneficial effect of adopting the above further solution is that by clamping the transmission block with the transmission groove, when the worm gear rotates, the connecting rod can drive the sleeve to rotate, thereby controlling the expansion and contraction of the clamping block.

[0022] Further, a worm is rotatably connected to the inside of the pull rod shaft body at the bottom end of the worm gear. The worm is meshed with the worm gear. One end of the worm extends to the outside of the pull rod shaft body and is sleeved with a knob.

[0023] The beneficial effect of adopting the above further solution is that by meshing the worm with the worm gear, it is convenient for the user to rotate the knob to make the worm rotate.

[0024] The beneficial effect of the present invention is: A locking device for a pull rod shaft obtained by the above design of the present invention. In this locking device for the pull rod shaft, by slidably installing fixing blocks at both ends of the pull rod shaft body, it can be telescoped at both ends of the pull rod shaft body, thereby facilitating the user to install the pull rod shaft body between a pair of lifting lugs. By opening a slot at the center of the lifting lug and inserting it with the fixing block, the pull rod shaft body can be connected. By opening an annular groove inside the slot and engaging it with the clamping block, after the fixing block is inserted into the slot, the clamping block can be used to limit the fixing block again, thereby improving the locking effect of the pull rod shaft body. By hinging a connecting rod between the first mounting seat and the second mounting seat, when the screw rod moves, the connecting rod can be used to push the slidably connected clamping block to move, so as to be clamped into the annular groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1 Schematic three-dimensional structure diagram of a locking device for a pull rod shaft provided by the present invention;

[0027] Figure 2 Schematic three-dimensional structure diagram inside the lifting lug of a locking device for a pull rod shaft provided by the present invention;

[0028] Figure 3 Schematic three-dimensional structure diagram of the pull rod shaft of a locking device for a pull rod shaft provided by the present invention;

[0029] Figure 4 Schematic partial front cross-sectional view of the pull rod shaft of a locking device for a pull rod shaft provided by the present invention;

[0030] Figure 5 Schematic side cross-sectional view of the cage and worm gear of a locking device for a pull rod shaft provided by the present invention.

[0031] In the figure: 100, main body; 1001, door frame; 1002, door panel; 1003, lifting lug; 1004, slot; 1005, annular groove; 200, shaft rod mechanism; 2001, pull rod shaft body; 2002, knob; 2003, fixing block; 2004, sliding groove; 2005, clamping block; 2006, second mounting seat; 2007, first mounting seat; 2008, connecting rod; 2009, spring; 2010, sleeve; 2011, cage; 2012, worm gear; 2013, worm; 2014, clamping groove; 2015, limiting block; 2016, transmission groove; 2017, connecting rod; 2018, screw rod. Specific implementation mode

[0032] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] Embodiment 1 of a locking device for a pull rod shaft of the present utility model

[0035] The present utility model provides the following technical solutions: As Figures 1 - 5As shown in the figure, a locking device for a drawbar shaft includes a main body 100 and a shaft rod mechanism 200. The shaft rod mechanism 200 includes a drawbar shaft body 2001 and two groups of sliding grooves 2004. Fixed blocks 2003 are slidably installed at both ends of the drawbar shaft body 2001. Each of the two groups of sliding grooves 2004 has four grooves, and the two groups of sliding grooves 2004 are respectively arranged on the outer sides of a pair of fixed blocks 2003. Block 2005 is slidably installed inside each of the two groups of sliding grooves 2004. The main body 100 includes a door frame 1001, and a door panel 1002 is slidably inserted into the interior of the door frame 1001. A pair of lifting lugs 1003 are fixedly installed at the upper end of the door panel 1002. Slots 1004 are opened at the centers of the lifting lugs 1003, and annular grooves 1005 are opened inside the slots 1004. A pair of fixed blocks 2003 are respectively inserted into a pair of slots 1004, and two groups of blocks 2005 are respectively clamped with a pair of annular grooves 1005. By slidably installing fixed blocks 2003 at both ends of the drawbar shaft body 2001, it can be telescoped at both ends of the drawbar shaft body 2001, which is convenient for the user to install the drawbar shaft body 2001 between a pair of lifting lugs 1003. By opening slots 1004 at the centers of the lifting lugs and inserting them into the fixed blocks 2003, the drawbar shaft body 2001 can be connected. By opening annular grooves 1005 inside the slots 1004 and clamping them with blocks 2005, after the fixed block 2003 is inserted into the slot 1004, the fixed block 2003 can be further limited by the block 2005, thereby improving the locking effect of the drawbar shaft body 2001.

[0036] Embodiment 2 of a locking device for a drawbar shaft of the present utility model

[0037] Refer to Figures 1 - 5As shown in the figure, limit blocks 2015 are installed at both inner ends of the drawbar shaft body 2001. Springs 2009 are installed on the outer sides of the limit blocks 2015. The other ends of a pair of springs 2009 are respectively connected to one ends of a pair of fixed blocks 2003. One side of the inside of each fixed block 2003 is rotatably connected with a sleeve 2010. One end of the sleeve 2010 is threadedly connected with a screw rod 2018. Four first mounting seats 2007 are installed on the outer sides of one ends of the screw rods 2018. A second mounting seat 2006 is installed on the inner side of each group of clamping blocks 2005. Connecting rods 2008 are hinged between the first mounting seats 2007 and the second mounting seats 2006 through pins. By installing the spring 2009, the fixed block 2003 can be pushed out by its elastic force, which is convenient for installing the drawbar shaft body 2001. By threadedly connecting the screw rod 2018 to one end of the sleeve 2010, when the sleeve 2010 rotates, the limiting screw rod 2018 can perform linear motion. By hinging the connecting rod 2008 between the first mounting seat 2007 and the second mounting seat 2006, when the screw rod 2018 moves, the clamping block 2005 connected in a sliding manner can be pushed by the connecting rod 2008 to move, so as to be clamped into the inner part of the annular groove 1005.

[0038] Embodiment 3 of a locking device for a drawbar shaft of the present utility model

[0039] Refer to Figures 1 - 5 As shown in the figure, a cage 2011 is installed inside the drawbar shaft body 2001 on the inner sides of the limit blocks 2015. A worm gear 2012 is rotatably connected to one side of the cage 2011. A clamping groove 2014 is opened at the center of the worm gear 2012. Transmission grooves 2016 are installed on both sides of the clamping groove 2014. One end of the sleeve 2010 is sleeved with a connecting rod 2017. The connecting rod 2017 is slidably inserted into the clamping groove 2014. Transmission blocks are installed on both sides of the connecting rod 2017, and the transmission blocks are clamped with the transmission grooves 2016. A worm 2013 is rotatably connected to the bottom end of the worm gear 2012 inside the drawbar shaft body 2001. The worm 2013 meshes with the worm gear 2012. One end of the worm 2013 extends to the outside of the drawbar shaft body 2001 and is sleeved with a knob 2002. By installing the limit frame 2011 and rotatably connecting the worm gear 2012 to one side thereof, it is convenient for the worm gear 2012 to rotate. By providing the clamping groove 2014 and the transmission groove 2016, it is convenient for the connecting rod 2017 to be inserted into the clamping groove 2014 and drive the worm gear 2012 to rotate. By slidably inserting the connecting rod 2017 into the clamping groove 2014, the connecting rod 2017 can slide inside it. By clamping the transmission block with the transmission groove 2016, when the worm gear 2012 rotates, the sleeve 2010 can be driven to rotate by the connecting rod 2017, so as to control the expansion and contraction of the clamping block 2005. By meshing the worm 2013 with the worm gear 2012, it is convenient for the user to rotate the knob 2002 to make the worm 2013 rotate.

[0040] Specifically, the working principle of the locking device for the drawbar shaft is as follows: When in use, the user presses the fixing blocks 2003 slidably connected to both ends of the drawbar shaft body 2001, causing them to retract into the interior of the drawbar shaft body 2001. Then, the two ends of the drawbar shaft body 2001 are aligned with the slots 1005. Under the elastic force of the spring 2009, the fixing blocks 2003 are reset and inserted into the slots 1005. Subsequently, the user rotates the knob 2002, which drives the worm 2013 to rotate. The worm 2013 meshes with the worm wheel 2012, and then drives the sleeve 2010 to rotate through the connecting rod 2017. One end of the sleeve 2010 is threadedly connected with a screw rod 2018. When the screw rod 2018 moves, the articulated connecting rod 2008 is used to push the slidably connected latch 2005 to slide inside the chute 2004, causing it to protrude and then engage with the annular groove 1006, so that the fixing block 2003 is fixed inside the slot 1005 and is not easily detached, thus completing the locking function of the drawbar shaft body 2001.

[0041] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A locking device for a drawbar shaft, characterized in that, It includes a main body (100) and a shaft rod mechanism (200). The shaft rod mechanism (200) includes a pull rod shaft body (2001) and two groups of sliding grooves (2004). Fixed blocks (2003) are slidably installed at both ends of the pull rod shaft body (2001). Each of the two groups of sliding grooves (2004) is provided with four. The two groups of sliding grooves (2004) are respectively arranged on the outer sides of a pair of the fixed blocks (2003). Blocks (2005) are slidably installed inside the two groups of sliding grooves (2004). The main body (100) includes a door frame (1001). A door panel (1002) is slidably inserted inside the door frame (1001). A pair of lifting lugs (1003) are fixedly installed at the upper end of the door panel (1002). Slots (1004) are opened at the centers of the lifting lugs (1003). Ring grooves (1005) are opened inside the slots (1004). A pair of the fixed blocks (2003) are respectively inserted into a pair of the slots (1004). Two groups of the blocks (2005) are respectively clamped with a pair of the ring grooves (1005).

2. The locking device of a drawbar shaft according to claim 1, characterized in that, Limit blocks (2015) are installed at both inner ends of the pull rod shaft body (2001). Springs (2009) are installed on the outer sides of the limit blocks (2015). The other ends of a pair of the springs (2009) are respectively connected to one ends of a pair of the fixed blocks (2003).

3. The locking device for a drawbar shaft according to claim 2, characterized in that, Sleeves (2010) are rotatably connected to one side inside each of the fixed blocks (2003). Screws (2018) are threadedly connected to one ends of the sleeves (2010). Four first mounting seats (2007) are installed on the outer sides of one ends of the screws (2018).

4. A locking device for a drawbar shaft according to claim 3, characterized in that, Second mounting seats (2006) are installed on the inner sides of each group of the blocks (2005). Connecting rods (2008) are hinged between the first mounting seats (2007) and the second mounting seats (2006) through pins.

5. The locking device for a pull rod shaft according to claim 4, wherein, Cage (2011) are installed inside the pull rod shaft body (2001) on the inner sides of the limit blocks (2015). Worms (2012) are rotatably connected to one sides of the cage (2011).

6. The locking device for a drawbar shaft according to claim 5, characterized in that, A clamping groove (2014) is opened at the center of the worm (2012). Transmission grooves (2016) are installed on both sides of the clamping groove (2014).

7. The locking device of a drawbar shaft according to claim 6, characterized in that, A connecting rod (2017) is sleeved on one end of the sleeve (2010). The connecting rod (2017) is slidably inserted into the clamping groove (2014).

8. The locking device for a drawbar shaft according to claim 7, characterized in that, Transmission blocks are installed on both sides of the connecting rod (2017), and the transmission blocks are clamped with the transmission grooves (2016).

9. The locking device for a drawbar shaft according to claim 8, characterized in that, A worm (2013) is rotatably connected to the bottom end of the worm (2012) inside the pull rod shaft body (2001). The worm (2013) meshes with the worm (2012). One end of the worm (2013) extends to the outside of the pull rod shaft body (2001) and is sleeved with a knob (2002).

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